Paronychia rugelii |
Paronychia depressa |
|
---|---|---|
Rugel's nailwort, sand squares |
spreading nailwort |
|
Habit | Plants annual; taproot filiform to slender. | Plants perennial, often matted; caudex branched, woody. |
Stems | erect, dichotomously branched, 5–50 cm, retrorsely to spreading- pubescent throughout. |
prostrate to sprawling, much-branched, 8–15 cm, scabrous-puberulent to puberulent throughout. |
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 lanceolate, 2–8 mm, apex acuminate, entire; blade linear, 8–15(–23) × 0.5–1 mm, leathery, apex shortly cuspidate, puberulent. |
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, ± ovate, with prominently enlarged hypanthium and calyx tapering only slightly distally, 2.3–3.5 mm, puberulent; sepals green to purple-brown, midrib and lateral pair of veins ± obscure, oblong to lanceolate-oblong, 1.7–2 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, hood prominent, rounded-triangular, awn divergent, conic in proximal 1/2–2/3 with yellowish, scabrous spine 0.7–0.9 mm; staminodes filiform, 0.5–0.8 mm; style 1, cleft in distal 1/3–2/3, 0.8–1.4 mm. |
Cymes | terminal and lateral, 15–50+-flowered, often forming large, congested clusters 5–30 mm wide. |
terminal, 3–7-flowered, branched, congested, in clusters 7–25 mm wide. |
Utricles | broadly ellipsoid to ± globose, 0.5–0.7 mm, smooth, glabrous. |
± ovoid, 0.8–0.9 mm, smooth, glabrous. |
2n | = 32. |
|
Paronychia rugelii |
Paronychia depressa |
|
Phenology | Flowering late spring–fall. | Flowering summer. |
Habitat | Woodlands, fields, clearings, roadsides, waste places | Dry plains, rocky ridges, hillsides |
Elevation | 0-200 m (0-700 ft) | 800-3000 m (2600-9800 ft) |
Distribution |
FL; GA
|
CO; SD; WY
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paronychia depressa is considered to be closely related to the nearly allopatric P. jamesii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 41. | FNA vol. 5, p. 36. |
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. jamesii var. depressa, P. depressa var. brevicuspis, P. depressa var. diffusa |
Name authority | (Chapman) Shuttleworth ex Chapman: Fl. South. U.S. ed. 3, 397. (1897) | (Torrey & A. Gray) Nuttall ex A. Nelson: Bull. Torrey Bot. Club 26: 236. (1899) |
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