Summer

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Arrowleaf Tear-thumb (Persicaria sagittata) Sprawling annual with 4-angled stems and backward pointing prickles. Leaves, 3-8cm long, 1-3cm wide, have backward pointing lobes and acute tips. White to pinkish flowers grow in dense clusters at branch tips. Blooms May-Oct.
Asian Rockbell (Wahlenbergia marginata ) Slender perennial 12-60 cm tall. Leaves linear, 1-4 cm long, appear mostly on lower half of stem. Pale blue flowers grow terminally on naked stalks 1-5 cm long. Flowers have 5 united petals 5-8 mm long with flaring lobes. Blooms late March-Oct.
Baldwins Yellow-eyed Grass (Xyris baldwiniana) Perennial with grass-like leaves 5-25 cm long, 0.5-1 mm wide. Flowering scape 1.5-4.5 dm tall. Spike ovoid, 5-7 mm long and broad. Sepals lacerate apically. 3 yellow petals. Blooms Jun.-Jul.
Big Root Morning Glory (Ipomoea pandurata) A trailing perennial vine with wide, heart-shaped leaves. White flowers are bell-shaped to 8 cm long, equally broad, with lavender throats. Male and female flower parts extrude from the throat. Bloom May-July.
Bitterweed (Helenium amarum) Annual 10-50 dm tall, widely branched. Leaves are abundant, 2-7 cm long and less than 4 mm wide, with tiny depressions on surfaces. Flowering heads are terminal, 1.5-2.5 cm across. Rays flowers are yellow, disc flowers are dull yellow. Blooms May-Nov.
Bog Death Camus (Zigadenus glaberrimus) Hairless perennial 50-80 cm tall. Leaves are 15-40 cm long, 6-20 mm wide, pleated. Flowers grow in a terminal inflorescence 15-40 cm long. The 3 sepals and 3 petals are 10-16 mm long, white, with 2 green glands at the base. Blooms Late June-Aug.
Bracken Fern (Pteridium aquilinum) Widely triangular fronds, 2-8 dm tall, twice divided into pinnae (leaflets), the basal ones projecting forward. Fern contains shikimac acid and are highly carcinogenic. Mature leaves are poisonous to animals. Blooms July-Sept.
Bull Nettle (Cnidoscolus stimulosus) Perennial herb 0.5-10 dm tall with dissected or lobed alternate leaves. Entire plant is covered in stinging hairs. White flowers are united into a tube with 5 lobes. Blooms late March-Aug.
Butterfly Pea (Clitoria mariana) Trailing or twining perennial herbaceous vine. Leaves are divided into three leaflets. Showy flowers are pale blue or lavender to 6 cm long, 4 cm wide. Fruit is a flat legume. Blooms June-Aug.
Butterfly-weed (Asclepias tuberosa) Perennial herb 2-8 dm tall, with stout stems clustered from a crown. Leaves are alternate, 4-10 cm long, 3-25 mm wide. Hemispherical inflorescence is 2-5 cm broad. Flowers are red to yellow and attract butterflies. Blooms May-Aug.
Canada St. Johns Wort (Hypericum canadense) Slim annual herb 10-60 cm tall. Leaves are opposite, sessile, 6-30 mm long, to 3 mm wide. Flowers grow terminally in groups forming a somewhat flat topped inflorescence. The 5 yellow petals are 2-3 mm long. Blooms July-Sept.
Carolina Horse-nettle (Solanum carolinense) Perennial 20-60 cm tall with star-shaped prickles. Leaves 7-12.5 cm long, 3-8 cm wide, with irregular, sharp-tipped lobes. Flowers, 2.3-3 cm across, grow in terminal, clusters. The white petals are fused, with 5 star-shaped lobes. Blooms May-July.
Caroliniana Yellow-eyed Grass (Xyris caroliniana) Perennial 30-75 cm tall, spirally twisted. Leaves basal, twisted 20-50 cm long, 2-4 mm wide. Flowers grow 1-3 at a time from a cone-like head 10-30 mm long that tapers at both ends. Three yellow petals 8-10 mm long open in afternoon. Blooms June-July.
Clubspur Orchid; Streamhead Orchid (Platanthera clavellata) Perennial herb 8-35 cm tall. The leaf is 5-18 cm long, 1-3.5 cm wide, and grows mid-stem. Up to 10 flowers grow in a short inflorescence. Flowers are greenish yellow. The 3 sepals are 3-5 mm long, 2 mm wide. Lower 2 petals are 3-7 mm. Blooms late June-Aug.
Common Blue-curls (Trichostema dichotomum) Annual 15-60 cm tall. Leaves are opposite 2-8 cm long and 5-20 mm wide. Blue stalked flowers appear from leaf axils. The lower of 5 petals forms a lip, 5-10 mm long, with dark blue spots. The long blue stamens curve forward and downward. Blooms Aug.-Oct.
Common Stargrass (Hypoxis hirsuta) Hairy perennial with grass-like leaves up to 45 cm long, 10 mm wide and pleated lengthwise. The 3 yellow petals and 3 sepals are alike, 6-10 mm long, 2-4 mm wide. Blooms April-July.
Common Yellow Wood Sorrel (Oxalis stricta) Annual 15-60 cm tall. Long stalked leaves are divided into 3 obovate, leaflets 10-30 mm long, deeply notched. 5-8 flowers grow on stalks 3-9 cm long. The 5 yellow petals are 8-11 mm long and curved outward. Blooms mid April-Oct.
Curtiss Yellow-eyed Grass (Xyris curtissii) Perennial 7.5-20 cm tall, 4-ribbed and minutely bumpy (papillose). Leaves are basal, flattened 5-12 cm long 2.5-4.5 cm wide, reddish at base and forming a fan shape. Yellow flowers with 3 petals grow from a cone-like head 5mm long. Blooms mornings Jul.-Sep
Daisy Fleabane (Erigeron strigosus) Winter annual. Stem 0.4-1 m tall, branched above, hairy. Leaves sparse, lance shaped 2-18 mm wide, toothed. Flowers form a flat topped cluster. Flower heads are 12 mm across with numerous white rays and yellow disc flowers. Blooms May-Oct.
Downy Angelica (Angelica venenosa) Perennial 30-80 cm tall, upper parts pubescent. The few leaves are twice divided. Leaflets to 5 cm long, 2 cm wide, toothed. Tiny white flowers occur in twice divided umbels. The rays of the umbels are 0.8-5 cm long. Blooms mid June-Aug.
Dwarf St. Johns Wort (Hypericum mutillum) Perennial 15-70 cm tall. Leaves are opposite, sessile, ovate, 12-30 mm long, 5-15 mm wide. Lower leaves are larger than upper. Yellow flowers grow terminally in small groups. The 5 petals are 2-3 mm long. Blooms June-Sept.
Dwarf Sundew (Drosera brevifolia) Pinkish herb with glandular hairs on the flower scape and leaves that ooze a sticky secretion that contributes to the insect-catching function of the spatula-shaped leaves. Flowers have 5 white petals, 5-7 mm long. Blooms May-Aug.
Eastern Milk Pea (Galactia regularis) Trailing perennial herb. Leaves are divided into 3 leaflets, 1.2-5 cm long. Flowers are redish purple, 1.2-1.8 cm long. Flowers June to Aug.
Engelmanns Arrowhead (Sagittaria engelmanniana) Perennial aquatic 30-50 cm tall. Leaves are basal, long-stalked, typically narrowly arrow-shaped, to 20 cm long, 5 cm wide. Lobes less tan 2.5 cm wide. Flowers in 2-4 whirls, male above, female below. Petals 3, white obovate to rotund. Blooms June-Sept.
False Nettle (Boehemeria cylindrica) Perennial to 1.3 m tall. Leaves, mostly opposite; some forms alternate. Inflorescence of male and female flowers in small compact glomerules along leafless lateral branches 1-10 cm long. Blooms July-Aug.
Fringed Meadow Beauty (Rhexia petiolata) Perennial to 6 dm tall, with 4-angled and narrowly winged stems. Leaves to 2 cm long and 1.5 cm wide, with a rounded base and fringe of hair around the margin. Petals are purple to rose, 14-17 mm long. Blooms June-Sept.
Glaucescent Sedge (Carex glaucescens) Tufted perennial with whitened grass-like leaves 0.6-1 m tall, 8 mm wide, with a long tapering point. The flower-bearing stem terminated by a straw-colored male spike and 3-5 green female spikes, 2.5-4.5 cm long, below. Blooms early July-early Sept.
Golden Colicroot (Aletris aurea) Perennial with a single unbranched stem 30-80 cm tall from a flat basal rosette of leaves 3.5-7.5 cm long. Flowers grow on upper part of stem. The 3 petals and 3 sepals are alike, united into a yellow tube with 6 blunt points. Blooms mid May-mid July.
Grassleaf Roseling (Cuthbertia graminea) Perennial herb 2-5 dm tall. Leaves are 0.2-3 dm long, 0.3-3 mm wide. The leaf sheaths are fringed with white hair. Petals are rose, 4-8 mm long. Blooms May-July.
Greater Tickseed (Coreopsis major) Perennial herb 0.5-1 m tall with divided leaves. Yellow ray flowers are 2-4 cm long. Disk flowers are yellow or red. Blooms May-July
Groundnut; Indian Potato (Apios americana) Perennial, twining vine to 3 m long. Leaves are divided into 5-7 leaflets, 3-7 cm long. Dull pink and maroon flowers grow in stalked clusters, 5-15 cm long, from axils. Blooms Jun.-Aug.
Hairy Meadow Beauty (Rhexia nashii) Perennial to 1 m tall. Leaves opposite 3-7 cm long, tapered to both ends. Branched inflorescence. 4 petals bright rosy pink, obovate, 20-25 mm, oblique lengthwise, with gland-tipped hairs on backside. Stamens curved. Blooms Jun.-Sept.
Hairy St. Johns Wort (Hypericum setosum) Densely hairy annual or biennial 20-75 cm tall. Leaves are opposite, sessile, ascending 3-15 mm long, to 8 mm wide. Flowers with 5 yellow petals grow in clusters at end of short spreading branches. Blooms May-Sept.
Hard Pipewort; Hatpins (Eriocaulon decangulare L. var. decangulare) Perennial, terrestrial or semi aquatic 30-80 cm tall. Leaves all basal, 12-30 cm long, to 10 mm wide. Stems ribbed lengthwise, topped by a hard domed white flower head, 8-16 mm wide. Flowers tiny. Blooms Late June-Sept.
Harpers Yellow-eyed Grass (Xyris scabrifolia) Perennial to 80 cm tall with a densely minutely bumpy stem. Leaves are basal, linear, flattened, twisted 20-50 cm long, 3-10 mm wide. Yellow flowers grow from elliptical, cone-like head, 10-17 mm long and open midday. A rare plant that blooms Jul.-Aug.
Horsefly Weed; Northern Wild Indigo (Baptisa tinctoria) Bushy perennial 3-10 dm tall, blackening on drying. Leaves are divided into 3 leaflets, 0.6-2 cm long and 0.5-1.2 cm wide. Numerous yellow stalked flowers terminate the branches. Blooms April-Aug.
Hyssop-leaf Thoroughwort (Eupatorium hyssopifolium) Perennial with erect stems 0.5-1 m tall, appearing in clumps. Larger leaves are 1-12 mm wide and 10-40X as long as wide. Leaves appear in whorls of 3 or 4. Tiny white flowers are clustered in heads. Blooms late July-Oct.
Ivy-leaf Morning Glory (Ipomoea hederacea ) Twining annual. Leaves ovate 5-12 cm long and wide, cleft into 3 lobes. Flowering stalk shorter than subtending leaf stalk and bearing 1-3 light blue bell shaped flowers. Petals united. Flowers 2.5-4.5 cm long and broad. Blooms July-Frost.
Juniper-leaf; Rustweed (Polypremum procumbens ) Prostrate perennial. Some stems orange. Leaves opposite 1-2.5 cm long, 0.5-2 mm wide. Sessile white flowers grow singly from leaf axils. Petals united with 4 obovate lobes, 2 mm long. Blooms June-Sept.
Kidney-leaf Rosin Weed (Silphium compositum) Erect perennial, 1-4 m tall with basal heart-shaped deeply lobed leaves. Flowering heads with yellow ray flowers 1-2 cm long, 3-5 cm wide, are numerous on a branched inflorescence from an essentially leafless stem. Blooms May-Sept.
Kudzu (Pueraria lobata) Invasive semi-woody vine 10-30 m long. Leaves divided into 3 leaflets, deeply lobed & hairy beneath. Flowers are violet-purple. Used to treat alcoholism, diabetes, deafness & gastroenteritis in China. Blooms July-Oct.
Lanceleaf Sabatia (Sabatia difformis ) Perennial with slightly angled stems 0.3-1 m tall. Stem leaves opposite, 5 cm long, 2 cm wide, Flowers grow at end of branches to form a convex top. The 5 white petals have a greenish yellow base, 1.5-2 cm long. Blooms June-Aug.
Little Ladies Tresses Orchid (Spiranthes tuberosa) Slender perennial 20-70 cm tall. Linear leaves are 2.5-6.5 cm long, 6-15 mm wide.Flowers grow in a twisted spiral to 15 cm long. The 3 white petals are 2-3.5 mm long. One of our smallest orchids. Blooms June-Sept.
Little-leaf Sensitive Briar (Mimosa microphylla) Perennial herb with prostrate or weakly arching stems often 1-2 m long, often with numerous prickles. Leaves are evenly twice divided. The 2 cm globe-shaped inflorescence is has numerous pink flowers. Blooms June-Sept.
Long-bracted or Scaley Blazingstar (Liatris squarrosa) Perennial 30-80 cm tall. Leaves 10-22 cm long, to 12 mm wide, reduced in size up the stem. Flower heads face upward in a loose few headed raceme. Flower bracts are 12-20 mm long. 20-30 purple-pink disc flowers per head. Blooms late June-Aug.
Long-spurred Bladderwort (Utricularia biflora) Aquatic perennial. Leaves are forked 3-4 times with filiform segments. Some have bladders that trap tiny invertebrates for their minerals. Flowering stem grows to 30 cm. Yellow flowers are 14-25 mm long, 2 lipped and long spurred. Blooms Late June-Sept.
Marsh Bristle Grass; Perennial Foxtail Grass (Setaria parviflora) Tufted perennial grass. Stems 3-8 dm tall, purplish. Blades to 25 cm long, 2-8 mm wide. Flowering spike 2-7 cm long, 0.8-2.5 wide. Flower rachis pubescent. Spikelets 2.2-2.8 mm long with 4-8 bristles. Blooms May-Oct.
Maryland Goldenaster (Chrysopsis mariana) Perennial with erect stems to 07 m tall. Lower leaves are 3.5-11 cm long, gradually reduced upwards, becoming sessil. Fower heads are 3.5-5 cm across with dark yellow disc flowers and lighter yellow ray flowers. Blooms late June-Oct.
Maryland Meadow Beauty (Rhexia mariana var. mariana) Perennial herb, forming colonies. Stems to 70 cm tall, with sides unequal. Leaves are 6.5 cm long, 2 cm wide. Flowers have 4 white to pale pink petals, 15-25 mm long, oblique. 8 anthers are yellow and curved. Fruit is urn-shaped. Blooms May-Oct.
Mistflower (Conoclinium coelestinum) Perennial herb to 1m tall. Opposite leaves, 4.5-9cm long, 2-6cm wide with bluntly tooth margins and resin dots on lower surface. Pale blue to lavender flowers in terminal clusters. Blooms July-Mid Oct.
Moon Mullein (Verbascum blattaria) Perennial herb 6-12 dm tall, glandular-pubescent above. Stem leaves 7-14 cm long, 2-5 cm wide, toothed. Inflorescence 10-15 mm long. Flower white or yellow, 25-35 mm across. Petals united with short tube and 5 large lobes. Blooms May-July.
Narrow-leaf Dawn Flower (Stylisma patens) Spreading herbaceous perennial vine. Leaves are hairy, 2.5-5 cm long, 6-8 mm wide, reduced upward. Flowers are white on stalks that slightly exceed the subtending leaf. Blooms June-Aug.
Narrow-leaf Ironweed (Vernonia angustifolia) Perennial with stems arising from a crown, but without basal leaves. Stem leaves are 1.5-6 mm wide. Flowering heads of all disk flowers are pinkish to purple. Blooms late June-early Sept.
Narrow-leaf White Topped Aster (Sericocarpus linifolius) Perennial herb, 2-7 dm tall. Leaves are 4-8 cm long, 2-7 mm wide, hairy on the margins and not twisted at the base, with punctate glands beneath. Disc and ray flowers are white. Rays are 7-12 mm long. Blooms June-July.
Narrow-leaved Skullcap (Scutellaria integrifolia) Perennial 20-80 cm tall. Leaves are opposite with smooth margins. Flowering inflorescence is up to 20 cm long. Tubular violet-blue flowers, 2-5 cm long, are 2-lipped with 3 lobes and 2 lobes. Basal part of the tube is abruptly bent. Blooms May-June.
Narrowleaf Sabaia (Sabatia brachiata) Annual herb, 15-50 cm tall. Stem leaves are opposite 2-5 cm long, 4-10 mm wide. Flowers are pink to rosy pink, occasionally white, with 5 petals, 1-2 cm long with yellow bases outlined in red. One of our showiest flowers. Blooms Late May-July.
Netted Chain Fern (Woodwardia areolata) Fronds 3-8 dm tall, once divided and joined in a wide wing along the frond rachis. Sterile fronds shorter than fertile with green petioles. Fertile leaves with purple-brown, shiny thick petioles 2X as long as the blades. Fruits June-Sept.
New York Fern (Thelypteris noveboracensis) Fronds are widely sword like, 5-15 cm wide, divided twice. Divisions cut completely to the midrib. It is characteristic the way in which the divisions are reduced equally at the top and bottom of the frond. Fruits May-Aug.
Northern Dewberry (Rubus flagellaris) Perennial to 2 m long, trailing stems with prickles. Leaves divided into 3 leaflets on flowering branches. Leaves 2-8 cm long , 1-5 cm wide. Flowers have 5 white petals, 1.5-2.5 cm long. Delicious fruit in July. Blooms Late April-Late May.
Nuttalls Lobelia (Lobelia nuttallii) Annual 30-60 cm tall. Stem leaves 1-3.5 cm long, 1-4 cm wide. Flowers on short stalks subtended by slender bracts. Petals are united, pale blue to whitish, 8-11 mm long with 2 flaring lobes above and 3 below. Blooms May-early Oct.
Orange Grass (Hypericum gentianoides) Erect annual, 1-5 dm tall with ascending, wing-angled branches. Leaves are sessile, 1-5 mm long, to 0.5 mm wide. Flowers have 5 yellow petals 1-4 mm long. Blooms July-Oct.
Orange Milkwort (Polygala lutea) Biennial or short-lived perennial with succulent leaves in basal rosettes. Stems are 1.5-5 dm tall. Flowers are brilliant orange in a compact head 1-3.5 cm long, 1.2-2 cm wide. Blooms April-Oct.
Partridge Pea (Chamaecrista fasciculata) Annual herb 1.5-6 dm tall. Divided leaves are sensitive to touch with a saucer-shaped gland near the middle of the petiole. 1-6 flowers appear in clusters in leaf axils. Bright yellow petals are 1-2 cm long. Blooms June-Sept.
Passion Flower (Passiflora incarnata ) Repent or climbing vine to 2 m long. Leaf blades are 3-5 lobed, 6-15 cm long, 6-15 cm wide. Flowers are mostly solitary from leaf axils. Petals are bluish to white, 3-4 cm long, with lavendar parts banded in purple. Blooms May-July.
Pencil Flower (Stylosanthes biflora) Perennial to 50 cm tall. Leaves are on short stalks and divided into 3 leaflets 1.5-4 cm long, the tips with projecting points. One to several pea-shaped flowers grow terminally. Petals are yellow, 5-9 mm long. Blooms late May-Aug.
Pineland Dayflower (Commelina erecta ) Erect or sprawling perennial. Leaves lance-like with basal sheaths. Flowers three parted. Petals blue. Blooms June-Oct.
Pokeweed (Phytolacca americana) Perennial to 3 m tall. Stems are succulent, bright magenta. Leaves 8-30 cm long, 3-12 cm wide. 10-30 flowers grow on arching inflorescence, blooming from the base outward. 5 sepals are greenish white, 2-3 mm long. Petals absent. Blooms May-Oct.
Poor Joe (Diodia teres) Erect or spreading annual with opposite sessile leaves, 2-4 cm long. Flowers are 4-parted. Petals are white to pink, united. The tube is 4-5 mm with lobes 1-2 mm long. The fruit is shaped like an upside-down pear. Blooms June-frost.
Procession Flower (Polygala incarnata) Hairless annual. Leaves fleshy, alternate, linear, 5-17 mm long. Flowers in spikes or racemes. Sepals 1mm long, pink with pink wings 2.5-3 mm long. Flower tube reddish-pink, prominately fringed, 5-6.5 mm long. Blooms June-July.
Purple-disc Sunflower (Helianthus atrorubens) Perennial 0.7-1.5 m tall. Hairy basally. Stem leaves ovate 6-20 cm long, 3-10 mm wide. Leaf stalk widely winged. Flower heads with purple disc flowers, yellow ray flowers. Blooms late July-Oct.
Queens Delight (Stillingia sylvatica) Hairless perennial to 80 cm tall with milky juice. Leaves 4-9 cm long, 1-4 cm wide. Flowers grow in thickish terminal spikes 5-12 cm long with yellow glands. Lower flowers are female, upper ones are male. Sepals yellow, petals absent. Blooms May-Jul.
Rabbit Tobacco; Everlasting (Pseudognaphalium obtusifolium) Annual herb with stems 0.3-1 m tall, densely white flocked with hairs. Leaves 2.5-8 cm long, 2-8 mm wide, hairless above. Flowering heads in a panicle, Disc flowers white, with papery bracts, hairy at the base. Blooms July-Oct.
Red Clover (Trifolium pratense) Perennial 2-5 dm tall. Leaves palmate divided into 3 leaflets, 1-3 cm long, half as wide. Flowering heads ovoid, 1-3 cm across. Flowers numerous. Petals reddish to purple 0.9-1.5 cm long. Blooms April-July.
Red Root (Lachnanthes caroliniana ) Perennial 30-70 cm tall with dense short white hair over upper 1/3. Basal leaves 30-50 cm long, 1.5 cm wide. Flowers grow on a single row on 5-10 branches atop the stem. Petals are 7-9 mm long white and wooly on the outside, yellow on the inside. Blooms J
Round-leaf Bush Clover (Lespedeza hirta ) Perennial 0.6-1.8 m tall with tawny hairs spread out from the stem, Leaflets 1.5-3 cm long and 2/3 or more as wide. Flowers in dense clusters from the axils of the upper leaves. Petals are yellowish white 8-12 mm long with central purple spot. Blooms Aug.-
Roundhead Lespedeza (Lespedeza capitata) Perennial 0.5-2 m tall, silvery with dense velvety hairs. Leaves are divided into 3 leaflets, 1.5-5 cm long. Inflorescences are dense. Petals are yellowish with a purple spot. Blooms Aug.-Oct.
Sampson Snakeroot (Orbexilum pedunculatum) Perennial herb 3-9 dm tall. Divided leaves have 3 leaflets 3-7 cm long, 0.5-1.5 cm wide, with punctate glands. Inflorescence is 2-10 cm long with conspicuous bracts below the purple flowers. Blooms May-July.
Sandhills Arrowhead (Sagittaria macrocarpa) Rare aquatic perennial. Leaves are slender, basal, long-stalked, 10 cm long, 2 mm wide. Flowering stem is 12-30 cm tall. Flowers are in 1-3 whirls, female below, male above. Flowers to 12 mm across and have 3 white obovate petals. Blooms May-Sept.
Sandhills Blazing-star (Liatris cokeri ) Perennial with stems to 0.8 m tall. Leaves, 5-18 cm long, 2-5 mm wide, and densely punctate on both surfaces. Flower heads grow in a dense spike. Each head has 4-9 pink to rosy disc flowers 7 mm long with 5 short lobes. Blooms Aug-Oct.
Sandhills Goldaster (Pityopsis pinifolia) Perennial herb, locally abundant, but found only in a few counties in the Sandhills. Stem leaves, 0.8-1.5 cm, are longer than the basal leaves. Flowers are yellow. Blooms Aug.-Oct.
Sandhills Ground-cherry (Physalis lanceolata) Perennial endemic to the Sandhills. 25 cm or less tall, branched, and covered with rough hairs. Leaves 3.5-7 cm long, 2.5 cm wide, have wavy margins. Bell-shaped, dull yellow flowers, 18 mm across, are solitary on drooping stalks. Blooms May-Jul.
Sandhills Thistle (Cirsium repandum) Biennial 0.5-0.7 m tall with cobwebby hairs. Stems are leafy to apex, spreading and spiny. Purple tubular flowers occur in dense heads 3.5 cm across. Blooms mid May-July.
Savanna Bog Buttons (Lachnocaulon anceps) Perennial forming mats. Leaves numerous, basal, 2-8 cm long, 3 mm wide. Flowering stalks 5-25 cm long twisted in a spiral, narrowly ridged. White flowers grow in a single round dense head atop each stalk. Heads are 4-7 mm across. Blooms mid May-late Sept.
Savanna Meadow Beauty (Rhexia alifanus) Perennial herb grows to 1 m tall. Leaves grow to 7 cm long and 1 cm wide. Flowers are purple with 4 petals that are glandular beneath, 16-22 mm long. Anthers are 6-7.5 mm long. Fruit is urnshaped. Blooms May-Oct.
Savanna Milkwort (Polygala ramosa) Hairless biennial 10-30 cm tall. Spatulate basal leaves form flat rosette. Stem leaves are linear to 20 mm long. Brilliant yellow flowers grow in dense terminal heads forming an umbrella-shaped inflorescence. Blooms June-August.
Savanna Mountain Mint (Pycnanthemum flexuosum) Perennial with gray, hoary, quadrangular stems 4-11 dm tall. Leaves are 1.5-5 cm long, 3-15 mm wide. Petals are white to lavender, 4-6 mm long. Blooms June-Aug.
Savanna Seedbox (Ludwigia virgata) Perennial 30-60 cm tall. Leaves alternate, sessile 2-3 cm long, 1 cm wide. A few to many yellow flowers grow on one side of the inflorescence. 4 sepals are reflexed, 4 petals are obovate, 10-16 mm long. Blooms mid June-early Sept.
Savanna Tickseed (Coreopsis linifolia ) Perennial herb 0.5-1 m tall. Leaves 3-15 cm long, 0.5-2 cm wide, much reduced upward. Flower heads occur on long slender stalks forming a flat to multi-layered cluster. Ray flowers are yellow, toothed at tip. Disc flowers are maroon red. Blooms July-Oct.
Savanna Yellow-eyed Grass (Xyris ambigua) Perennial 45-90 cm tall. Leaves are 15-30 cm long, 5-12 mm wide, not twisted, and form a broad fan. Flowers grow from a cone-like head atop the stem and open mornings. The 3 petals are yellow, obovate, 5 mm long. Blooms July-Sept.
Sericea Lespedeza (Lespedeza cuneata) Invasive perennial with stems 3-12 dm tall. Leaves are divided into 3 grey-green leaflets 1-2.5 cm long. Flowers in clusters in the axils of the upper and medium leaves. Petals are creamy white marked with violet purple. Blooms July-Sept.
Sheepbit (Jasione montana) Annual herb 2-5 dm tall. Leaves are 1-3 cm long, 1.4-4 mm wide, sessile. Flowers are blue to lavender, in heads 2-3 cm broad. Blooms June-Sept.
Showy Rattlebox (Crotalaria spectabilis) Annual over 1 m tall. Stems hairy. Leaves ovate, 5-20 cm long. Many flowers grow on stalks up to 0.5 m long. Petals are yellow, 15-25 mm long. Plant is an invasive alien often used for wildlife food plots. Blooms July-Sept.
Slender Goldentop (Euthamia caroliniana) Perennial herb 0.3-0.8 m tall, branched above to form a flat-topped inflorescence. The numerous leaves are 2-7 cm long and 1-3 mm wide, 1 veined and curved. Heads are 8-12 flowered, about 4 mm wide. Blooms late Aug.-Oct.
Slender Wild Lettuce (Lactuca graminifolia var. graminifolia) Biennial to 1 m tall. Sap milky. Leaves alternate, mostly basal 10-30 cm long, 1-5 cm wide, irregularly lobed. Flower heads are 10 mm across. Ray flowers are blue to violet. Disc flowers absent. Seeds disperse via a parachute of white hairs. Blooms Late Ap
Small-head Beak Sedge (Rhynchospora microcephala) Perennial 5-8.5 cm tall. Blades 1-2 mm wide. Flowering glomerules 4-16 mm across, terminal and in 2-5 globose fascicles from leaf axils. Spiklets 3-3.5 mm long. Nutlets brownish with yellow centers, with 6 retrorsely barbed bristles. Blooms July-Oct.
Small-leaved White Snakeroot (Ageratina aromatica) Perennial, 35-65 cm tall. Opposite leaves are 3-7 cm long, 1.5-5 cm wide, bluntly toothed. Leafstalks 1-2 cm. Inflorescence has terminal clusters of bright white flower heads. Rays are absent. Blooms Aug.-Oct.
Smalls Goldenrod; Pineywoods Goldenrod (Solidago pinetorum) Perennial with stems 3-12 dm tall. Basal leaves, 7-15 cm long, 0.5-2.5 cm wide with teeth. Stem leaves reduced upward, with fascicles of small leaves in axils. Inflorescence is about as long as broad. Ray flowers are yellow, secund. Blooms July-Oct.
Smooth-leaf Elephants Foot (Elephantopus nudatus) Perennial with basal leaves 2-7 cm wide, giving the plant its common name. Purple flowers are all tubular. Three overlapping leaf-like bracts at the base of each flowering head form a triangle. Blooms late July-Sept.
Soft Milkpea (Galactia mollis) Densely soft, hairy, trailing perennial with sparse leaves divided into 3 elliptic leaflets, 2-5 cm long. 1-6 flowers grow at tips of long stalk, 10-20 cm tall. Petals are pinkish. Blooms May-July.
Soft Rush (Juncus effusus) Perennial forming tufts of sharp-tipped, green, photosynthetic stems, 0.5-1.2 m tall. Leaves absent. Flowers grow in a loose cluster from upper stem; not terminal. 3 Petals and 3 sepals look alike. Blooms June-Sept.
Sourwood (Oxydendrum arboreum) Medium to large tree with alternate, deciduous leaves 0.8-2 dm long, 2.5-7 cm wide. Inflorescence is a terminal panicle of racemes. Flowers are urn-shaped, 5-8 mm long. Blooms June-July.
Southern Flowering Spurge (Euphorbia pubentissima) Perennial to 60 cm tall, branched above. Lower leaves alternate. Mid to upper leaves opposite, 2-6 cm long, 5-30 mm wide. Flowers are 3-8 mm broad. Petals absent, replaced by white petal-like glands 1-4 mm long. Blooms late March-July.
Spoon-leaf Sundew (Drosera intermedia) Rose colored perennial insectivorous plant. Leaves narrowly spoon-shaped with tentacle-like glandular hairs 7-15 mm long that trap insects. Leaf stalks are 3-4X as long as the blade. Flowers have 5 white petals 5-8 mm long. Blooms July-Sept.
Spurred Butterfly Pea (Centrosemma virginiana) Perennial herbaceous vine to 2 m long. Leaves are divided into 3 narrowly ovate leaflets 2-7 cm long. One to several flowers grow from slender stalks from the leaf axils. Bluish to purple flowers are 2.5-3.5 cm across. Blooms late June-early Sept.
St. Andrews Cross (Hypericum hypericoides) Shrub to 1 m tall. Leaves opposite, sessile, 8-25 mm long, 2-7 mm wide. Flowers grow from leaf axils. The 2 outer sepals are ovate 6-12 mm wide. The 2 inner sepals are very small or absent. The 4 petals are yellow, 6-10 mm long. Blooms late May-Sept.
St. Peters Cross (Hypericum crux-andreae) Slender shrub to 1 m tall. Bark is reddish brown. Leaves are opposite, 1-4 cm long, 6-20 mm wide. Yellow flowers grow on stalks from leaf axils. The 2 outer sepals are broadly ovate. The 4 yellow petals are 6-15 mm long, 2-3 mm wide. Blooms June-Sept.
Sticky False Foxglove / Southern Oakleach (Areolaria pectinata) Bushy annual with short, gland-tipped hairs, parasitic on roots of black oaks. Numerous leaves are opposite, 2-6 cm long, 8-21 mm wide, divided into narrow toothed segments. United yellow petals with 5 lobes 3.5-5 cm long and wide. Blooms Late May-Sept.
Sticky Golden-aster (Pityopsis aspera) Perennial 0.5 m tall. Stems, branches and flowers stalks with dense gland-tipped hairs. Leaves numerous, grasslike. The lower ones 5-25 cm long, to 12 mm wide, silky pubescent. Flower heads are 12 mm wide with yellow ray and disc flowers. Blooms July-Oct
Summer Bluet (Houstonia purpurea) Perennial with narrowly winged stem 10-30 cm tall. Stem leaves are opposite, sessile 2-6 cm long, 8-25 mm wide with 3-7 prominent veins. Lavender to white flowers grow in clusters. Petals are united. Tube is 5-7 mm long with 4 lobes. Blooms mid May-July.
Sweet Pepperbush (Clethra alnifolia) Shrub to 2.5 m tall. Leaves are simple, alternate, hairy beneath. Fragrant white, stalked flowers appear in terminal unbranched inflorescences. Blooms June-July.
Tall Seedbox (Ludwigia alternifolia) Short-lived perennial to 1.2 m tall. Leaves are 5-10 cm long , 1-1.5 cm wide, sessile. Flowers grow singly in axils of the branch leaves. Petals 4, yellow, broadly obovate, 6mm long and wide. Blooms Jun.-Sept.
Tawny Goats Rue (Tephrosia spicata) Perennial with dense tawny hairs. Leaves divided into 9-19 leaflets 12-25 mm long, 6-12 mm wide. One to several pea-shaped flowers grow at tips of long cylindrical stalks from leaf axils. Flowers are white quickly turning pink then maroon. Blooms June-Aug.
Ti Ti (Cyrilla racemiflora) Tall shrub. Leaves are semi-evergreen, simple, alternate, widest above the middle,to 10 cm long and 4 cm wide. White, stalked flowers appear on numerous inflorescences 5-15 cm long from previous year's growth. Blooms May-July.
Toothed White-topped Aster (Sericocarpus asteroides) Perennial 20-60 cm tall, pubescent. Basal leaves 2.5-10 cm long, toothed with fine pale hairs, present at flowering. Flowers grow in flat-topped inflorescence. The 3-7 ray flowers are white, 3-6 mm long. Disk flowers,dull white. Blooms May-July.
Twining Snoutbean (Rhynchosa tomentosa) Erect perennial, 1.5 dm tall with strongly-angled, hairy stems. Leaves are divided into 3 leaflets 2-8 cm long, 1/3 to 1/2 as wide, conspicuously veined with a velvety feel. Yellow flowers are closely clustered. Blooms June-Aug.
Twisted Leaf White-topped Aster (Sericocarpus tortifolius) Perennial 40-100 cm tall, branched in the upper 1/4 and densely hairy. Stem leaves are sessile, hairy, 1-4 cm long, twisted on axis. 2-4 clusters of flower heads grow at end of branches forming a flat-topped inflorescence. Blooms mid Aug.-early Oct.
Virginia Meadow Beauty (Rhexia virginica) Perennial to 45-80 cm tall, branched, hairy. Leaves opposite, 7 cm long, 2.5 cm wide, 3-nerved. Flowers occur in a branched inflorescence. The 4 petals are rosy, 15-20 mm long, oblique lengthwise with gland-tipped hairs on back. Blooms late June-Sept.
Water Lily (Nymphea odorata) Perennial aquatic herb with almost round leaves, purple beneath, to 3 dm wide. Flowers float. Petals are white or pink, 2-10 cm long. Blooms June-Sept.
Water-shield (Bresenia schreberi) Perennial aquatic. Plant thickly covered with clear viscous jelly. Leaves alternate, floating. Maroon flowers grow singly from leaf axils, slightly raised above water surface. Petals 12-20 mm, recurved to reveal erect stamen. Blooms Jun.-Oct.
Wetland Flax (Linum striatum) Slender, hairless perennial 30-90 cm tall with low ridges on stem. Leaves are opposite to mid stem and alternate above, 10-30 mm long, 3-10 mm wide. Pale yellow flowers have 5 petals 3-5 mm long. Fruit is a round capsule 3 mm long. Blooms Jun.-Oct.
White Clover (Trifolium repens) Perennial with creeping stems 1-4 dm long. Leaves palmately divided into 3 leaflets 1-3 cm long. Flowering stalks 1-2.5 dm long. Inflorescence is nearly globose, 1-3 cm in diameter. 40-80 white to pinkish flowers per flower head. Blooms April-Sept.
White Fringed Orchid (Platanthera blephariglottis) Perennial to 76 cm tall. Leaves are lance-shaped 5-35 cm long, 1-5 cm wide. White stalked flowers grow in a dense cylindrical raceme. Long slender fringe adorns the margin of the lower petal or lip. One of our rare orchids. Blooms July-Aug.
White Meadow Beauty (Rhexia mariana var. exalbida) Colonial perennial to 35 cm tall. Stem is unbranched. Leaves are opposite, tapered with short hairs. White flowers grow in a branched inflorescence. The 4 petals are 10-18 mm long, oblique lengthwise. Stamens are curved. Blooms late May-Sept.
White Thoroughwort (Eupatorium album) Perennial with erect hairy stems 4-8 dm tall. Larger leaves are 1.5-3 cm wide, 6 times as long as wide and reduced in size toward apex. All are hairy and have resin glands. Tiny white flowers are clustered in heads. Blooms June-Sept.
Whorled Tickseed (Coreopsis verticillata) Perennial 3-10 dm tall wity 6-12 nodes below the inflorescence. Leaves are 2 or 3 times divided into linear segments 0.5-5 cm long, 2 mm wide. Ray flowers are yellow, 1.5-3 cm long, 4-8 mm wide. Disc flowers are yellow. Blooms May-July.
Wild Sensitive Plant (Chamaecrista nictitans) Annual plant 1-5 dm tall. Divided leaves are sensitive to touch with an slender-stalked, umbrella-shaped gland just below the lowest leaflets. Petals are bright yellow, unequal, 3-7 mm long. Blooms June-Oct.
Winged Sumac (Rhus copallina) Shrub or small tree to 7 m tall. Leaves are divided into 9-23 leaflets 3-8 cm long. The leaf stem (rachis) is winged. Tiny cream colored flowers are in terminal branched inflorescences 0.5-3 dm long and broad. Blooms July-Sept.
Wire-plant (Stipulicida setacea ) Extremely slender annual. The single stem grows to 12 cm long, widely forked into wire-like segments. Basal leaves overwinter then disappear. Stem leaves are just 1-2 mm long. Flowers terminal, 5 mm across with 5 tiny white petals. Blooms May-Aug.
If you find an interesting plant take a picture. Send it to plants@walthour-moss.org
Maybe we will include it here.