Paronychia pulvinata |
Paronychia lindheimeri |
|
---|---|---|
Rocky Mountain nailwort |
fork nailwort |
|
Habit | Plants perennial, densely cespitose, cushion-forming; caudex much-branched, woody. | Plants annual; taproot filiform to slender. |
Stems | prostrate, much-branched, 5–10 cm, puberulent. |
erect to ascending, much-branched, 15–33 cm, glabrous to minutely puberulent. |
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 lanceolate to ovate, 2.5–5 mm, apex acuminate to long-acuminate, entire; blade linear to filiform, 8–15 × 0.4–0.8 mm, leathery, apex acute to submucronate, glabrous. |
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, short-campanulate, with enlarged hypanthium and calyx slightly constricted proximally, 1.6–2 mm, appressed-puberulent proximally; sepals red-brown, midrib and lateral pair of veins absent to evident, oblong, 0.8–1.1 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, hood present, broadly rounded, awn divergently spreading, 0.4–0.6 mm, ± broadly conic in proximal 1/2 with pale-yellow, scabrous spine; staminodes filiform, 0.5–0.7 mm; style 1, cleft in distal 1/6, 0.6–0.7 mm. |
Utricles | ovoid, 1.3–1.5 mm, smooth, glabrous. |
ovoid-globose, 0.8–0.9 mm, smooth, glabrous. |
Cymes | terminal and axillary, 5–20+-flowered, dichotomous, repeatedly branching and diffusely spreading, open, clusters 0.5–1.5 mm wide. |
|
2n | = 32. |
|
Paronychia pulvinata |
Paronychia lindheimeri |
|
Phenology | Flowering summer. | Flowering summer–fall. |
Habitat | Rocky slopes and summit screes in alpine regions | Rocky places on limestone hills and high prairies |
Elevation | 3300-4200 m (10800-13800 ft) | 100-600 m (300-2000 ft) |
Distribution |
CO; UT; WY
|
TX |
Source | FNA vol. 5, p. 40. | FNA vol. 5, p. 39. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | P. pulvinata var. longiaristata | P. chorizanthoides, P. lindheimeri var. longibracteata |
Name authority | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 58. (1864) | Engelmann ex A. Gray: Boston J. Nat. Hist. 6: 152. (1850) |
Web links |