Paronychia pulvinata |
Paronychia maccartii |
|
---|---|---|
Rocky Mountain nailwort |
Mccart's nailwort |
|
Habit | Plants perennial, densely cespitose, cushion-forming; caudex much-branched, woody. | Plants perennial; taproot ± stout. |
Stems | prostrate, much-branched, 5–10 cm, puberulent. |
sprawling, branched from base, 3–10 cm, 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, 2.5–5 mm, apex narrowly acuminate, entire; blade linear-oblong to linear-lanceolate, 2–10 × 0.7–1.5 mm, leathery, apex spinose, minutely puberulent. |
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, extended-urceolate, with enlarged hypanthial bulge and calyx cylindric to slightly tapering distally, 3.5-4 mm, moderately pubescent proximally, with minute, hooked hairs on hypanthial bulge, sparsely pubescent on calyx, densely so with hooked to coiled hairs on hood; sepals green to red-purple, midrib apparent, oblong, 1.9–2.1 mm, herbaceous to leathery, margins white, 0.2–0.3 mm wide, papery, apex terminated by awn, hood triangular-rounded, awn erect, becoming widely divergent, white, ± lanceoloid from proximal constriction, 0.8–1.3 mm, slightly scarious, distinct spine absent; staminodes narrowly subulate, 0.6–0.8 mm; style 1, cleft in distal 7/8, 0.7–0.8 mm. |
Utricles | ovoid, 1.3–1.5 mm, smooth, glabrous. |
unknown. |
Cymes | terminal, 10–20-flowered, congested, in clusters 0.5–1.5 mm wide. |
|
2n | = 32. |
|
Paronychia pulvinata |
Paronychia maccartii |
|
Phenology | Flowering summer. | Flowering spring. |
Habitat | Rocky slopes and summit screes in alpine regions | Dense red sands |
Elevation | 3300-4200 m (10800-13800 ft) | 200-300 m (700-1000 ft) |
Distribution |
CO; UT; WY
|
TX |
Discussion | Of conservation concern. Paronychia maccartii is still known only from the type collection in Webb County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 5, p. 40. | FNA vol. 5, p. 40. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | P. pulvinata var. longiaristata | |
Name authority | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 58. (1864) | Correll: Brittonia 18: 307. (1967) |
Web links |