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Ciliate Meadowbeauty,
Rhexia petiolata
Calyx segments acuminate-aristate. Petals lavender-rose to pink, per Weakley's Flora (2012).
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Awned Meadowbeauty,
Rhexia aristosa
The long yellowish bristles at the summit of the calyx/hypanthium are diagnostic, per Weakley's Flora (2022).
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Mexican Primose-willow,
Ludwigia octovalvis
Calyx segments ovate, 3-nerved, 8-14mm long, acute to acuminate apically, puberulent or hirsute, per Aquatic and Wetland Plants of Southeastern United States (Godfrey & Wooten, 1979 & 1981).
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Common Water-purslane,
Ludwigia palustris
Flowers upright, stalkless. Calyx ~ 1/8" across with lobes flaring outward, per www.minnesotawildflowers.info.
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Common Evening-primrose,
Oenothera biennis
Hypanthium present, prolonged above the inferior ovary as a calyx tube, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Narrowleaf Sundrops,
Oenothera fruticosa var. fruticosa
Hypanthium present, prolonged above the inferior ovary as 7-15mm calyx tube, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Northern Sundrops,
Oenothera tetragona
Hypanthium present, prolonged above the inferior ovary as a calyx tube, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Clustered Snakeroot,
Sanicula odorata
Petals yellowish green, much longer than the
calyx, per Weakley's Flora (2012).
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Clustered Snakeroot,
Sanicula odorata
Staminate pedicels 1.5-3mm long. Calyx lobes deltoid, apices not sharp, per A synopsis of the genus Sanicula (Apiaceae) in eastern Canada (Pryer & Phillippe, 1989).
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Large Sanicle,
Sanicula canadensis var. grandis
Polygamous umbellet w pedicellate mature fruits & staminate flwrs. Styles ~ 1.5x long as calyx, per A synopsis of the genus Sanicula (Apiaceae) in eastern Canada (Pryer & Phillippe, 1989).
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Small's Sanicle,
Sanicula smallii
Calyx lobes shorter than bristles, divergent; petals white or greenish, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Mountain Sweet-pepperbush,
Clethra acuminata
Capsules subglobose, dehiscence loculicidal, enclosed by persistent calyx, per Flora of North America.
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Coastal Sweet-pepperbush,
Clethra alnifolia
Fruit a hairy, spherical capsule within a persistent calyx, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Rosebay Rhododendron,
Rhododendron maximum
Fruit just beginning to develop. Calyx lobes slightly unequal, 4-5mm, obtuse, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Carolina Rhododendron,
Rhododendron carolinianum
Calyx lobes deltoid (vs. those of R. minus ovate;), per Weakley's Flora (2023).
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Evergreen Mountain Fetterbush,
Pieris floribunda
Calyx lobes acute, 2.5-3mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Northern Maleberry,
Lyonia ligustrina var. ligustrina
Calyx lobes triangular; corolla white, globose, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Tall Fetterbush,
Agarista populifolia
Pedicels 7-10mm long in flower. Calyx triangular, ~ 1mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Mountain Sweetbells,
Eubotrys recurvus
Pedicels each with 2 bracteoles just below the calyx. Calyx lobes lanceolate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Coastal Fetterbush,
Eubotrys racemosus
Calyx campanulate, sepals lanceolate, 2-3mm, apex acute, per Flora of North America.
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Bear Huckleberry,
Gaylussacia ursina
Calyx lobes obtuse, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Common Deerberry,
Vaccinium stamineum var. stamineum
Calyx lobes 5, acute or obtuse, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Mayberry,
Vaccinium elliottii
Calyx lobes obtuse, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Hillside Blueberry,
Vaccinium pallidum
Calyx and corolla glabrous, often glaucous. Calyx lobes acute, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Woollyberry,
Vaccinium hirsutum
Pedicel, hypanthium, calyx and corolla stipitate-glandular. Entire plant hirsute, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Smooth Highbush Blueberry,
Vaccinium corymbosum
Calyx lobes triangular-ovate and spreading, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Hairy Highbush Blueberry,
Vaccinium fuscatum
Calyx lobes triangular to lanceolate, erect to ascending, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Oconee Bells,
Shortia galacifolia
Scapes with 3-5 bracts, these often closely subtending the calyx, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Fraser's Loosestrife,
Lysimachia fraseri
Calyx not streaked, 4-6mm, lobes lanceolate, margins darkly thickened, per Flora of North America.
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Garden Loosestrife,
Lysimachia vulgaris
Calyx lobes with longitudinal maroon resin canals along margins, per Flora of North America.
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Buckthorn Bumelia,
Sideroxylon lycioides
Fruit an ellipsoid drupe-like berry 6-10mm long, subtended by persistent calyx, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Tough Buckthorn,
Sideroxylon tenax
Fruit an ellipsoid drupe-like berry 6-10mm long, subtended by persistent calyx, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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American Persimmon,
Diospyros virginiana
Calyx 4-5 lobed, enlarging after flowering, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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American Persimmon,
Diospyros virginiana
Position of calyx remnant reveals fruit to be derived from a superior ovary, per Woody Plants of Kentucky and Tennessee (Jones & Wofford, 2013).
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Common Silverbell,
Halesia tetraptera var. tetraptera
Calyx 3-6mm long, the teeth or lobes minute, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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American Storax,
Styrax americanus var. americanus
Fruit a pendant, drupe-like capsule with 1-3 dark seed; calyx persistent, per Woody Plants of the Blue Ridge (Lance).
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Devilwood,
Cartrema americanum
Calyx tube about 1mm long, lobes 0.5-1.5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Fragrant Tea Olive,
Osmanthus fragrans
Many-flowered cymes fascicled in leaf axils. Pedicel 4-10mm. Calyx ~ 1mm, per Flora of China.
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Juniperleaf,
Polypremum procumbens
Calyx persistent, lobes lanceolate, relatively thick, sharply pointed, per www.missouriplants.com (Tenaglia).
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Rose-pink,
Sabatia angularis
Calyx lobes linear to narrowly lanceolate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Slender Marsh-pink,
Sabatia campanulata
Corolla lobes pink. Calyx lobes > 3/4× as long as the corolla lobes and sometimes exceeding them, per Weakley's Flora (2023).
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Slender Marsh-pink,
Sabatia campanulata
Calyx lobes are erect to wide spreading, linear to narrowly linear, less than 0.5mm wide, per Gentians of the Eastern US (Drake, 2011).
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Coastal Rose-pink,
Sabatia calycina
Calyx lobes foliaceous, frequently equaling or exceeding corolla lobes, per Gentians of the Eastern US (Drake, 2011).
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Eastern Fringed Gentian,
Gentianopsis crinita
The 4 calyx lobes are triangular-ovate, acute to acuminate, erect, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Stiff Gentian,
Gentianella quinquefolia
Calyx cleft half its length, lobes linear, acute, erect to slightly spreading, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Pinebarren Gentian,
Gentiana autumnalis
The linear calyx lobes are 10-25mm long and 0.5-1.5mm wide, per Gentians of the Eastern US (Drake, 2011).
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Striped Gentian,
Gentiana villosa
Calyx lobes linear to oblanceolate, 5-35mm long by 0.5-12mm wide, per Gentians of the Eastern US (Drake, 2011).
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Appalachian Gentian,
Gentiana decora
Calyx lobes relatively small, 2-8mm long, subulate to oblanceolate, per Gentians of the Eastern US (Drake, 2011).
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Balsam Mountain Gentian,
Gentiana latidens
Calyx lobes larger & proportionately wider than other N. American gentians, per Gentians of the Eastern US (Drake, 2011).
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Soapwort Gentian,
Gentiana saponaria
Calyx lobes elliptic-linear, 4-17mm long to 2mm wide, ascending to spreading, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Coastal Plain Gentian,
Gentiana catesbyi
Calyx lobes are oblanceolate and 10-35mm long by 1.5-7mm wide, per Gentians of the Eastern US (Drake, 2011).
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American Columbo,
Frasera caroliniensis
Calyx lobes lanceolate, 0.6-1.5cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Crested Floating Heart,
Nymphoides cristata
Calyx lobed to near base; lobes ovate-elliptic to ovate, apex obtuse, per Flora of China.
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Bigleaf Periwinkle,
Vinca major
Peduncles 2-4cm long. Calyx lobes 6-12mm long and ciliate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Swallow-wort,
Pattalias paluster
Calyx lobes lanceolate, 2.5mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Carolina Spinypod,
Matelea carolinensis
Calyx lobes pubescent, 2-3mm long. Buds short-ovoid, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Five-angled Dodder,
Cuscuta pentagona
Calyx lobes overlapping, forming definite angles, thus flowers strongly angled, per Weakley's Flora.
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Field Dodder,
Cuscuta campestris
Larger flowers than C. pentagona & w/o prominent angles at calyx lobe base, per Key to the Dodders (Cuscuta, Convolvulaceae) of Alabama and Adjacent States (Spaulding, 2013).
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Narrowleaf Dawnflower,
Stylisma angustifolia
Similar to S. patens and occurring in the same habitats, but calyx glabrous, per Wildflowers of the Sandhills Region (Sorrie, 2011).
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Field Bindweed,
Convolvulus arvensis
Smaller flowers than Calystegia and lacking its calyx-concealing bracts, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).