Paronychia sessiliflora


Gen. N. Amer. Pl. 1: 160. 1818.

Common names: Creeping nailwort
Treatment appears in FNA Volume 5. Treatment on page 42. Mentioned on page 32.

Plants perennial, densely cespitose and mat-forming; caudex branched, woody. Stems erect to ascending, branched proximally, 5–25 cm, hirtellous. Leaves: stipules lanceolate to subulate, 2–3 mm, apex long-acuminate, often deeply cleft; blade linear-subulate, 4–7.5 × 0.5–0.8 mm, leathery, apex acute or shortly cuspidate-mucronate, very finely puberulent to glabrous. Cymes terminal, 3–6-flowered, congested, or flowers solitary. Flowers 5-merous, ± ovoid, with enlarged hypanthium and calyx narrowing distally, 3.6–5 mm, moderately pubescent with silky to stiff, antrorse to somewhat spreading hairs; sepals green to red-brown, midrib and lateral pair of veins prominent, lanceolate-oblong, 1.5–2 mm, leathery, margins whitish to translucent, 0.1–0.2 mm wide, scarious, apex terminated by awn, hood ± obscure, narrowly rounded, awn erect to somewhat spreading, 1–1.5(–2) mm, narrowly conic in proximal 1/2 with white, scabrous spine; staminodes filiform, 0.7–1 mm; style 1, cleft in distal 1/5, 1.4–1.5 mm. Utricles ovoid-oblong, 1.3–1.4 mm, densely pubescent in distal 1/2.

Phenology: Flowering summer.
Habitat: Dry, stony hillsides, summits, and sandstone mesas
Elevation: 700-3100 m


V5 81-distribution-map.gif

Alta., Sask., Colo., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Tex., Utah, Wyo.


Selected References


Lower Taxa

... more about "Paronychia sessiliflora"
Ronald L. Hartman +, John W. Thieret +  and Richard K. Rabeler +
Nuttall +
Creeping nailwort +
Alta. +, Sask. +, Colo. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Okla. +, Tex. +, Utah +  and Wyo. +
700-3100 m +
Dry, stony hillsides, summits, and sandstone mesas +
Flowering summer. +
Gen. N. Amer. Pl. +
Illustrated +  and Endemic +
Anychia +, Anychiastrum +, Gastronychia +, Gibbesia +, Nyachia +, Odontonychia +  and Siphonychia +
Paronychia sessiliflora +
Paronychia +
species +