Paronychia rugelii |
Paronychia ahartii |
|
---|---|---|
Rugel's nailwort, sand squares |
Ahart's nailwort, Ahart's paronychia |
|
Habit | Plants annual; taproot filiform to slender. | Plants annual; taproot filiform to stout. |
Stems | erect, dichotomously branched, 5–50 cm, retrorsely to spreading- pubescent throughout. |
erect, tightly branched, 0.5–1.2 cm, glabrous. |
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 broadly ovate, 3–6 mm, apex acute to acuminate, entire; blade linear to oblanceolate, 2.5–7.5 × 0.5–1.2 mm, leathery, apex spinulose, glabrous. |
Inflorescences | flowers axillary, solitary. |
|
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. |
5-merous, cylindric, with enlarged hypanthium and calyx cylindric to somewhat tapering distally, 4.2–5 mm, moderately hairy in proximal 1/2 with hooked to coiled hairs; sepals green to tan, veins absent, lanceolate to elliptic, 3.5–4.5 mm, margins translucent, 0.7–1+ mm wide, scarious (resembling stipules), apex (of herbaceous midrib) terminated by awn, hood apparently consisting of prominent, erect, scarious extension of margins split at apex, awn ± spreading, 1.5–2 mm, oblong extension of midrib in proximal 1/4, with white, wavy, threadlike spine; staminodes filiform, ca. 1 mm; style 1, cleft in distal 3/4, ca. 0.5 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, ca. 1.3 mm, papillose distally. |
Paronychia rugelii |
Paronychia ahartii |
|
Phenology | Flowering late spring–fall. | Flowering spring. |
Habitat | Woodlands, fields, clearings, roadsides, waste places | Well-drained rocky outcrops, vernal pool edges, volcanic uplands |
Elevation | 0-200 m (0-700 ft) | 0-500 m (0-1600 ft) |
Distribution |
FL; GA
|
CA |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Paronychia ahartii, first collected in 1938, is known from three counties in north-central California. It most closely resembles P. arabica (Linnaeus) de Candolle, a species of northern African and Arabian deserts. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 41. | FNA vol. 5, p. 33. |
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 | |
Name authority | (Chapman) Shuttleworth ex Chapman: Fl. South. U.S. ed. 3, 397. (1897) | Ertter: Madroño 32: 87, fig. 1. (1985) |
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