Paronychia argyrocoma |
Paronychia jamesii |
|
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silverling, silvery nailwort, silvery whitlow-wort |
James' nailwort, nailwort |
|
Habit | Plants perennial, matted; caudex woody. | Plants perennial; caudex branched, woody. |
Stems | prostrate to ascending, much-branched, 5–60 cm, often retrorsely pubescent on 1 side. |
erect to ascending, much-branched, 10–35 cm, scabrous, puberulent to pubescent, sometimes glabrous with age. |
Leaves | 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. |
stipules lanceolate, 5–15 mm, apex acuminate, entire; blade linear, 7–25(–34) × 0.5–1 mm, leathery, apex obtuse to subacute or submucronate, pubescent to puberulent. |
Flowers | 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. |
5-merous, short-campanulate, with enlarged hypanthium and calyx widening somewhat distally, 1.8–2.8 mm, puberulent, glabrous to hirtellous distally; sepals green to red-brown, veins absent, oblong, 1.3–1.8 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, broadly rounded, awn widely divergent, 0.4–0.8 mm, conic in proximal 1/2–2/3 with yellowish, scabrous spine; staminodes filiform, 0.6–1 mm; style 1, cleft in distal 1/3–1/6, 0.8–1.2 mm. |
Cymes | terminal, 15–25+-flowered, very compact, forming conspicuous glomerules 10–20 mm wide. |
terminal, 20–70-flowered, open, clusters 1–2 cm wide. |
Utricles | oblong, 1.5–1.8 mm, smooth, pubescent distally. |
ellipsoid-ovoid, 0.8–1 mm, smooth, glabrous. |
Paronychia argyrocoma |
Paronychia jamesii |
|
Phenology | Flowering spring–early fall. | Flowering summer–fall. |
Habitat | On or among rocks | Limestone rocky ledges, slopes, hilltops, grasslands |
Elevation | 200-1800 m (700-5900 ft) | 500-2500 m (1600-8200 ft) |
Distribution |
GA; KY; MA; MD; ME; NC; NH; TN; VA; VT; WV
|
CO; KS; NE; NM; OK; TX; WY; Mexico (Chihuahua, Coahuila)
|
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.) |
We agree with B. L. Turner (1983b) in not adopting the four varieties of Paronychia jamesii that Chaudhri recognized. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 33. | FNA vol. 5, p. 39. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Anychia argyrocoma, P. argyrocoma subsp. albimontana, P. argyrocoma var. albimontana | P. jamesii var. hirsuta, P. jamesii var. parviflora, P. jamesii var. praelongifolia |
Name authority | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 160. (1818) | Torrey & A. Gray: Fl. N. Amer. 1: 170. (1838) |
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