Paronychia herniarioides |
Paronychia argyrocoma |
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coastal-plain nailwort |
silverling, silvery nailwort, silvery whitlow-wort |
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Habit | Plants annual, matted; taproot filiform. | Plants perennial, matted; caudex woody. |
Stems | prostrate to erect, dichotomously branched, 3–20 cm, retrorsely to spreading- pubescent throughout. |
prostrate to ascending, much-branched, 5–60 cm, often retrorsely pubescent on 1 side. |
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, 2.5–8 mm, apex acute, entire; blade linear to linear-lanceolate or -oblanceolate, 5–30 × 0.5–2 mm, leathery, apex acute, often mucronate, sparsely appressed-pubescent. |
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 to ovoid, with enlarged hypanthium and calyx cylindric to tapering distally, 3.5–6.5 mm, pubescent with antrorse, slightly spreading, silky hairs; sepals greenish to brownish, veins 3, obscure, ribs absent, narrowly lanceolate, 2–3.2 mm, leathery to rigid, margins translucent, ca. 0.1 mm wide, scarious, apex terminated by awn, hood narrowly triangular, awn straight to slightly divergent, white, 0.9–2 mm, scabrous, spinose; staminodes narrowly triangular, 0.4–0.6 mm; style 1, cleft in distal 1/6, 1.4–2 mm. |
Utricles | ellipsoid to subglobose, 0.5–0.8 mm, essentially smooth, glabrous. |
oblong, 1.5–1.8 mm, smooth, pubescent distally. |
Cymes | terminal, 15–25+-flowered, very compact, forming conspicuous glomerules 10–20 mm wide. |
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Paronychia herniarioides |
Paronychia argyrocoma |
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Phenology | Flowering spring–fall. | Flowering spring–early fall. |
Habitat | Sandy ridges, dunes, pine/oak woodland | On or among rocks |
Elevation | 0-300 m (0-1000 ft) | 200-1800 m (700-5900 ft) |
Distribution |
FL; GA; NC; SC
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GA; KY; MA; MD; ME; NC; NH; TN; VA; VT; WV
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Discussion | Plants of Paronychia argyrocoma with glabrous or barely scabrous leaves and glabrous sepal awns have sometimes been recognized as var. albimontana. They are found in both the southern and northern areas of the species range, but, curiously, not in the central portion (M. N. Chaudhri 1968). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 5, p. 38. | FNA vol. 5, p. 33. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Anychia herniarioides, Anychiastrum herniarioides, Gastronychia herniarioides | Anychia argyrocoma, P. argyrocoma subsp. albimontana, P. argyrocoma var. albimontana |
Name authority | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 159. (1818) | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 160. (1818) |
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