Paronychia rugelii |
Paronychia argyrocoma |
|
---|---|---|
Rugel's nailwort, sand squares |
silverling, silvery nailwort, silvery whitlow-wort |
|
Habit | Plants annual; taproot filiform to slender. | Plants perennial, matted; caudex woody. |
Stems | erect, dichotomously branched, 5–50 cm, retrorsely to spreading- pubescent throughout. |
prostrate to ascending, much-branched, 5–60 cm, often retrorsely pubescent on 1 side. |
Leaves | stipules ovate-lanceolate, 2–6 mm, apex acuminate, entire; blade linear to linear-oblanceolate or linear-oblong, 3–25 × 1–2.3 mm, herbaceous, apex ± acute, moderately antrorsely puberulent. |
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. |
Flowers | 5-merous, cylindric to narrowly lanceolate, with enlarged hypanthium and calyx cylindric to tapering distally, 2.3–3.5 mm, pubescent mostly proximal with hooked or usually straight hairs, sometimes with scattered straight hairs distally; sepals flecked or solid red-brown, white distally, midrib obscure, linear-lanceolate, 1.5–2 mm, papery, margins white, 0.1–0.2 mm wide, papery, apex terminated by mucro, hood obscure, narrowly rounded, mucro short-conic, ca. 0.1 mm, glabrous; staminodes filiform, widening proximally, 0.5–0.6 mm; style 1, cleft in distal 1/10. |
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. |
Cymes | terminal and lateral, 15–50+-flowered, often forming large, congested clusters 5–30 mm wide. |
terminal, 15–25+-flowered, very compact, forming conspicuous glomerules 10–20 mm wide. |
Utricles | broadly ellipsoid to ± globose, 0.5–0.7 mm, smooth, glabrous. |
oblong, 1.5–1.8 mm, smooth, pubescent distally. |
Paronychia rugelii |
Paronychia argyrocoma |
|
Phenology | Flowering late spring–fall. | Flowering spring–early fall. |
Habitat | Woodlands, fields, clearings, roadsides, waste places | On or among rocks |
Elevation | 0-200 m (0-700 ft) | 200-1800 m (700-5900 ft) |
Distribution |
FL; GA
|
GA; KY; MA; MD; ME; NC; NH; TN; VA; VT; WV
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 5, p. 41. | FNA vol. 5, p. 33. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Siphonychia rugelii, Gibbesia rugelii, Odontonychia interior, P. rugelii var. interior, Siphonychia interior | Anychia argyrocoma, P. argyrocoma subsp. albimontana, P. argyrocoma var. albimontana |
Name authority | (Chapman) Shuttleworth ex Chapman: Fl. South. U.S. ed. 3, 397. (1897) | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 160. (1818) |
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