Paronychia herniarioides |
Paronychia baldwinii |
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coastal-plain nailwort |
Baldwin's nailwort |
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Habit | Plants annual, matted; taproot filiform. | Plants annual, biennial, or perennial, often matted; taproot slender. |
Stems | prostrate to erect, dichotomously branched, 3–20 cm, retrorsely to spreading- pubescent throughout. |
prostrate to erect, branched, 5–70 cm, mostly retrorsely to spreading-pubescent on 1 side or throughout. |
Leaves | stipules ovate-lanceolate, 0.5–7 mm, apex acuminate, entire; blade elliptic to oblong or ovate, or basal ones spatulate, 2–18 × 1–6 mm, herbaceous to leathery, apex mucronate to short-spine-tipped, moderately antrorsely pubescent. |
stipules lanceolate, 2–6 mm, apex acuminate, entire; blade oblong to elliptic or oblanceolate, 3–25 × 1–6 mm, herbaceous, apex acute and briefly cuspidate, glabrous. |
Inflorescences | diffuse, flowers solitary (paired) in axils of leafy bracts. |
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Flowers | 5-merous, broadly ovoid, with enlarged hypanthium and calyx tapering distally, 2–2.3 mm, glabrous to strigose; sepals brownish to yellowish, veins absent, subulate to lanceolate, 1–1.7 mm, leathery to rigid, margins whitish, 0.03–0.1 mm wide, papery, apex terminated by awn, hood obscure, small flange, awn straight to slightly divergent, yellow, 0.3–0.4 mm, scabrous to antrorsely strigose, spinose; staminodes narrowly triangular, 0.2–0.3 mm; style 1, cleft in distal 1/8, 0.7–0.9 mm. |
5-merous, ± short-cylindric, with enlarged hypanthium and calyx cylindric, 1–1.7 mm, glabrous to pubescent with short hairs, often minutely ciliate, sometimes glaucous; sepals greenish or greenish white to brownish, veins absent, ovate to oblong, 0.8–1.3 mm, herbaceous, margins white, 0.05–0.1 mm wide, scarious to papery, apex terminated by minute cusp, hood narrowly rounded, cusp light green to whitish, straight, short-conic, 0.1–0.15 mm, minutely scabrous; staminodes subulate, 0.2–0.3 mm; style 1, cleft in distal 4/5+, 0.2–0.4 mm. |
Utricles | ellipsoid to subglobose, 0.5–0.8 mm, essentially smooth, glabrous. |
ellipsoid, 1–1.3 mm, papillate distally. |
Cymes | terminal, 20–40+-flowered, diffuse, lax, repeatedly forked or dichotomous. |
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Paronychia herniarioides |
Paronychia baldwinii |
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Phenology | Flowering spring–fall. | Flowering summer–fall. |
Habitat | Sandy ridges, dunes, pine/oak woodland | Dunes, woodlands, fields, clearings, roadsides, riverbanks, hummocks, waste places |
Elevation | 0-300 m (0-1000 ft) | 0-200 m (0-700 ft) |
Distribution |
FL; GA; NC; SC
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AL; FL; GA; NC; SC; VA
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Discussion | Chaudhri used duration and pubescence to recognize two subspecies of Paronychia baldwinii, characters that L. H. Shinners (1962c) found to vary independently in this species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 5, p. 38. | FNA vol. 5, p. 34. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Anychia herniarioides, Anychiastrum herniarioides, Gastronychia herniarioides | Anychia baldwinii, Anychiasatrum baldwinii, Anychiasatrum riparium, P. baldwinii var. ciliata, P. baldwinii subsp. riparia, P. riparia |
Name authority | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 159. (1818) | (Torrey & A. Gray) Fenzl ex Walpers: Repert. Bot. Syst. 1: 262. (1842) |
Web links |