Paronychia franciscana |
Paronychia argyrocoma |
|
---|---|---|
California whitlow wort, San Francisco nailwort, San Francisco whitlow wort |
silverling, silvery nailwort, silvery whitlow-wort |
|
Habit | Plants perennial, mat-forming; caudex branched, woody. | Plants perennial, matted; caudex woody. |
Stems | prostrate, usually much-branched throughout, 5–50 cm, pubescent. |
prostrate to ascending, much-branched, 5–60 cm, often retrorsely pubescent on 1 side. |
Leaves | stipules ovate-lanceolate, 3–6 mm, apex narrowly acute to long-acuminate, entire; blade elliptic to oblanceolate, 5–10 × 1.5–2.5 mm, ± fleshy, apex spinulous, entire, ± moderately antrorsely appressed-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. |
Flowers | 5-merous, short-cylindric, with enlarged hypanthium and calyx cylindric to slightly tapering distally, 1.9–2.4 mm, glabrous, sepals puberulent distally; sepals greenish, becoming reddish brown, midrib and lateral pair of veins often apparent, oblong to ovate, 1.2–1.3 mm, herbaceous, margins translucent, ca. 0.1 mm wide, scarious, apex terminated by awn, hood broadly rounded, awn erect, 0.5–0.7 mm, conic in proximal 1/6 with whitish, smooth spine; staminodes absent; styles 2, 0.2–0.3 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. |
Cymes | axillary, inconspicuous, 2–6-flowered, tightly congested. |
terminal, 15–25+-flowered, very compact, forming conspicuous glomerules 10–20 mm wide. |
Utricles | ± globose to 4-angled, 1.2–1.3 mm, papillate distally. |
oblong, 1.5–1.8 mm, smooth, pubescent distally. |
Paronychia franciscana |
Paronychia argyrocoma |
|
Phenology | Flowering spring. | Flowering spring–early fall. |
Habitat | Grassy hills | On or among rocks |
Elevation | 20-300 m (100-1000 ft) | 200-1800 m (700-5900 ft) |
Distribution |
CA; South America (Chile) [Introduced in North America]
|
GA; KY; MA; MD; ME; NC; NH; TN; VA; VT; WV
|
Discussion | Although Paronychia franciscana was described from California, where it has been known from the San Francisco area since 1887, the species is native in Chile. (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. 38. | FNA vol. 5, p. 33. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Anychia argyrocoma, P. argyrocoma subsp. albimontana, P. argyrocoma var. albimontana | |
Name authority | Eastwood: Bull. Torrey Bot. Club 28: 288. (1901) | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 160. (1818) |
Web links |