Paronychia pulvinata |
Paronychia herniarioides |
|
---|---|---|
Rocky Mountain nailwort |
coastal-plain nailwort |
|
Habit | Plants perennial, densely cespitose, cushion-forming; caudex much-branched, woody. | Plants annual, matted; taproot filiform. |
Stems | prostrate, much-branched, 5–10 cm, puberulent. |
prostrate to erect, dichotomously branched, 3–20 cm, retrorsely to spreading- pubescent throughout. |
Leaves | stipules ovate, 3–6 mm, apex subobtuse, entire; blade narrowly elliptic-oblong or oblong to narrowly elliptic-oblanceolate, 2–5 × 0.2–1.8(–2) mm, fleshy, apex obtuse to subacute, glabrous. |
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. |
Inflorescences | diffuse, flowers solitary (paired) in axils of leafy bracts. |
|
Flowers | mostly solitary at end of shoots, almost concealed by leaves.; flowers 5-merous, elliptic-oblong, with enlarged hypanthium and calyx straight to tapering distally, 2.5–2.8 mm, densely appressed-puberulent, sparsely so distally; sepals whitish to green, veins absent, narrowly oblong to ovate-oblong, 1.5–1.7 mm, papery to herbaceous, margins white, 0.2–0.3 mm wide, papery, apex with subterminal awn, hood ascending as continuation of sepal, broadly rounded to notched, awn erect, white, 0.3–0.6(–1) mm, ± glabrous spine; staminodes filiform, 0.7–0.9 mm; style 1, cleft in distal 1/3, 0.8–1 mm. |
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. |
Utricles | ovoid, 1.3–1.5 mm, smooth, glabrous. |
ellipsoid to subglobose, 0.5–0.8 mm, essentially smooth, glabrous. |
2n | = 32. |
|
Paronychia pulvinata |
Paronychia herniarioides |
|
Phenology | Flowering summer. | Flowering spring–fall. |
Habitat | Rocky slopes and summit screes in alpine regions | Sandy ridges, dunes, pine/oak woodland |
Elevation | 3300-4200 m (10800-13800 ft) | 0-300 m (0-1000 ft) |
Distribution |
CO; UT; WY
|
FL; GA; NC; SC
|
Source | FNA vol. 5, p. 40. | FNA vol. 5, p. 38. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | P. pulvinata var. longiaristata | Anychia herniarioides, Anychiastrum herniarioides, Gastronychia herniarioides |
Name authority | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 58. (1864) | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 159. (1818) |
Web links |