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Dahoon,
Ilex cassine
Flowers in axillary clusters. Petals and sepals usually 4, sometimes 5, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
Possumhaw,
Ilex decidua
Flowers similar to other hollies; petals and sepals usually 4, rarely 5, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
Carolina Holly,
Ilex ambigua
Flowers ~ 1/4" in diameter in axillary clusters; sepals w marginal hairs, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
Spotted Jewelweed,
Impatiens capensis
The 3 sepals form a funnel-shaped sac extending back into a slender spur, per Wildflowers of the Southern Mountains (Smith, 1998).
St. Andrew's Cross,
Hypericum hypericoides
Two outer sepals, ovate or widely elliptic; inner sepals usually obsolete, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Straggling St. Johnswort,
Hypericum stragulum
Two outer sepals, ovate or widely elliptic; inner sepals usually obsolete, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
St. Peter's-wort,
Hypericum crux-andreae
Four unequal sepals: the 2 outer and larger enclosing 2 much narrower inner, per Wildflowers of the Carolina Lowcountry (Porcher, 1995).
St. Peter's-wort,
Hypericum crux-andreae
Outer sepals cordate or ovate, inner sepals lanceolate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Low St. Peter's-wort,
Hypericum tetrapetalum
Flowers w 4 petals & 4 (rarely2) sepals. Leaves cordate-clasping at the base, per Weakley's Flora (2012).
Glade St. Johnswort,
Hypericum dolabriforme
Sepals very unequal. Petals more than 0.35" long. Stamens 120-200, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
Early St. Johnswort,
Hypericum nudiflorum
Sepals 3mm long, oblong, obtuse apically, per Weakley's Flora.
Strict St. Johnswort,
Hypericum virgatum
Sepals and petals not marked with black dots or lines, per Weakley's Flora (2012).
Strict St. Johnswort,
Hypericum virgatum
Flowers coppery-yellow with 5 asymmetric petals and 5 narrower and shorter sepals, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
Strict St. Johnswort,
Hypericum virgatum
Fruit a reddish-green, erect, conical-oval capsule surrounded by persistent sepals and petals, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
Spotted St. Johnswort,
Hypericum punctatum
Leaves, stems, sepals & petals heavily black-dotted. Leaves blunt-tipped, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
Mountain St. Johnswort,
Hypericum graveolens
Sepals &petals without black lines, round black glands only along petal margin, per Weakley's Flora.
Eastern Green-violet,
Cubelium concolor
Sepals nearly equal, linear, 3-5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Wood Violet,
Viola palmata var. palmata
Sepals 6-10mm long, acute to obtuse, glabrous to ciliate, auricles 0.5-1mm, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Threepart Violet,
Viola tripartita
Sepals 5-6.5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Northern Wedgeleaf Violet,
Viola glaberrima
Upper two petals suffused with purple on the back. Sepals 5-6.5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Halberdleaf Violet,
Viola hastata
Sepals of chasmogamous flowers eciliate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Smooth Yellow Forest Violet,
Viola eriocarpa
Sepals 5-6.5mm, ciliate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Canada Violet,
Viola canadensis
Peduncles shorter (rarely longer) than the leaves. Sepals 4-10mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
American Dog Violet,
Viola labradorica
Spur 4-5mm long. Sepals 4-8mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Johnny Jump-up,
Viola tricolor
Upper 2 petals violet or yellow with some purple; sepals shorter than petals, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
European Field Pansy,
Viola arvensis
Middle 2 petals usually no longer than sepals, per www.plant-identification.co.uk
European Field Pansy,
Viola arvensis
Sepals oblong-lanceolate, apex acute; basal auricles irregularly toothed, per Flora of China.
Johnny Jump-up,
Viola rafinesquei
Sepals 3-6mm long, abruptly acute, shorter than the petals, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Purple Passionflower,
Passiflora incarnata
Sepals 2.5-3.5cm long, with a soft horn-like subapical appendage 1-5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Purple Passionflower,
Passiflora incarnata
Sepals 2.5-3.5cm long, with a soft horn-like subapical appendage 1-5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Purple Passionflower,
Passiflora incarnata
Sepals and petals surmounted by elaborate fringelike purple-banded corona, per Wildflowers of the Southern Mountains (Smith, 1998).
Yellow Passionflower,
Passiflora lutea
5 slender petals, 5 greenish sepals, a corona of threadlike segments, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
Wingstem Water-primrose,
Ludwigia decurrens
Sepals ovate with an acuminate apex, 5-10mm long, 2-3mm wide, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Water-willow,
Ludwigia leptocarpa
5-7 sepals and petals, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Common Water-primrose,
Ludwigia hexapetala
Sepals (8-)12-19mm long, per Weakley's Flora (2012).
Savanna Seedbox,
Ludwigia virgata
Sepals ovate and reflexed. Style 7-9mm long, its enlarged base prominent, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Rafinesque's Seedbox,
Ludwigia hirtella
Petals larger than those of L. alternifolia, exceeding the narrow sepals, per Wildflowers of the Southern Mountains (Smith, 1998).
Alternate-leaf Seedbox,
Ludwigia alternifolia
Sepals deltoid-ovate, 6-9mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Alternate-leaf Seedbox,
Ludwigia alternifolia
Flowers yellow, about 1/2" across, with conspicuous spreading sepals, per Wildflowers of the Southern Mountains (Smith, 1998).
Shrubby Seedbox,
Ludwigia suffruticosa
Sepals widely ovate (petals absent), per Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001).
Pondshore Seedbox,
Ludwigia arcuata
Petals longer than sepals; pedicels 15-35mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Creeping Seedbox,
Ludwigia repens
Sepals persistent, triangular to ovate, glabrous, acute to acuminate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Common Evening-primrose,
Oenothera biennis
Sepals reflexed, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
Beach Evening Primrose,
Oenothera drummondii
Sepals nearly linear, per Flora of the southeastern United States (JK Small, 1913).
Cutleaf Evening Primrose,
Oenothera laciniata
Flowers arise from the axils of upper leaves. Sepals reflexed, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
Great Willowherb,
Chamaenerion angustifolium ssp. circumvagum
Sepals purplish, linear-oblanceolate, pubescent, 10-15mm long, 1-2mm wide, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Purpleleaf Willowherb,
Epilobium coloratum
Sepals ovate, 2.5-3mm long, pubescent, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Threadstalk Gaura,
Oenothera filipes
Sepals reflexed separately , per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
English Ivy,
Hedera helix var. helix
Flowers small: sepals 0.2-0.4mm, petals thick, 3-3.5mm long. Umbels terminal, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Spikenard,
Aralia racemosa
Sepals ca. 0.3mm long; petals white ca. 1mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Clustered Snakeroot,
Sanicula odorata
Style conspicuously exserted and recurved and more than twice as long as sepals, per A synopsis of the genus Sanicula (Apiaceae) in eastern Canada (Pryer & Phillippe, 1989).
Black Snakeroot,
Sanicula marilandica
Style conspicuously exserted and recurved and more than twice as long as sepals, per A synopsis of the genus Sanicula (Apiaceae) in eastern Canada (Pryer & Phillippe, 1989).
Canada Sanicle,
Sanicula canadensis var. canadensis
Style shorter than sepals; inconspicuous sepals straight and about equalling uppermost bristles, per A synopsis of the genus Sanicula (Apiaceae) in eastern Canada (Pryer & Phillippe, 1989).
Small's Sanicle,
Sanicula smallii
Sepals on mature fruit somewhat spreading, immersed in adjacent fruit bristles, per Weakley's Flora.
Beaked Sanicle,
Sanicula trifoliata
Style shorter than sepals; sepals w subulate, incurved tips exceeding uppermost bristles, per A synopsis of the genus Sanicula (Apiaceae) in eastern Canada (Pryer & Phillippe, 1989).
Flowering Dogwood,
Benthamidia florida
Hypanthium appressed-hairy, completely adnate to ovary; sepals 0.5-0.8mm, per Flora of North America.
Mountain Sweet-pepperbush,
Clethra acuminata
Sepals and rachis woolly, white, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
Pipsissewa,
Chimaphila maculata
Five sepals united at base, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
Sweet Azalea,
Rhododendron arborescens
Sepals 1.5-5mm long, per Weakley's Flora (2022).
Staggerbush,
Lyonia mariana
Flowers subtended by conspicuous purplish-red 1/4-3/8" sepals, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).