Paronychia rugelii |
Paronychia pulvinata |
|
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Rugel's nailwort, sand squares |
Rocky Mountain nailwort |
|
Habit | Plants annual; taproot filiform to slender. | Plants perennial, densely cespitose, cushion-forming; caudex much-branched, woody. |
Stems | erect, dichotomously branched, 5–50 cm, retrorsely to spreading- pubescent throughout. |
prostrate, much-branched, 5–10 cm, puberulent. |
Leaves | stipules ovate-lanceolate, 2–6 mm, apex acuminate, entire; blade linear to linear-oblanceolate or linear-oblong, 3–25 × 1–2.3 mm, herbaceous, apex ± acute, moderately antrorsely puberulent. |
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. |
Flowers | 5-merous, cylindric to narrowly lanceolate, with enlarged hypanthium and calyx cylindric to tapering distally, 2.3–3.5 mm, pubescent mostly proximal with hooked or usually straight hairs, sometimes with scattered straight hairs distally; sepals flecked or solid red-brown, white distally, midrib obscure, linear-lanceolate, 1.5–2 mm, papery, margins white, 0.1–0.2 mm wide, papery, apex terminated by mucro, hood obscure, narrowly rounded, mucro short-conic, ca. 0.1 mm, glabrous; staminodes filiform, widening proximally, 0.5–0.6 mm; style 1, cleft in distal 1/10. |
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. |
Cymes | terminal and lateral, 15–50+-flowered, often forming large, congested clusters 5–30 mm wide. |
|
Utricles | broadly ellipsoid to ± globose, 0.5–0.7 mm, smooth, glabrous. |
ovoid, 1.3–1.5 mm, smooth, glabrous. |
2n | = 32. |
|
Paronychia rugelii |
Paronychia pulvinata |
|
Phenology | Flowering late spring–fall. | Flowering summer. |
Habitat | Woodlands, fields, clearings, roadsides, waste places | Rocky slopes and summit screes in alpine regions |
Elevation | 0-200 m (0-700 ft) | 3300-4200 m (10800-13800 ft) |
Distribution |
FL; GA
|
CO; UT; WY
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Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 5, p. 41. | FNA vol. 5, p. 40. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Siphonychia rugelii, Gibbesia rugelii, Odontonychia interior, P. rugelii var. interior, Siphonychia interior | P. pulvinata var. longiaristata |
Name authority | (Chapman) Shuttleworth ex Chapman: Fl. South. U.S. ed. 3, 397. (1897) | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 58. (1864) |
Web links |