Paronychia rugelii |
Paronychia lindheimeri |
|
---|---|---|
Rugel's nailwort, sand squares |
fork nailwort |
|
Habit | Plants annual; taproot filiform to slender. | Plants annual; taproot filiform to slender. |
Stems | erect, dichotomously branched, 5–50 cm, retrorsely to spreading- pubescent throughout. |
erect to ascending, much-branched, 15–33 cm, glabrous to minutely 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 lanceolate to ovate, 2.5–5 mm, apex acuminate to long-acuminate, entire; blade linear to filiform, 8–15 × 0.4–0.8 mm, leathery, apex acute to submucronate, 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. |
5-merous, short-campanulate, with enlarged hypanthium and calyx slightly constricted proximally, 1.6–2 mm, appressed-puberulent proximally; sepals red-brown, midrib and lateral pair of veins absent to evident, oblong, 0.8–1.1 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, hood present, broadly rounded, awn divergently spreading, 0.4–0.6 mm, ± broadly conic in proximal 1/2 with pale-yellow, scabrous spine; staminodes filiform, 0.5–0.7 mm; style 1, cleft in distal 1/6, 0.6–0.7 mm. |
Cymes | terminal and lateral, 15–50+-flowered, often forming large, congested clusters 5–30 mm wide. |
terminal and axillary, 5–20+-flowered, dichotomous, repeatedly branching and diffusely spreading, open, clusters 0.5–1.5 mm wide. |
Utricles | broadly ellipsoid to ± globose, 0.5–0.7 mm, smooth, glabrous. |
ovoid-globose, 0.8–0.9 mm, smooth, glabrous. |
Paronychia rugelii |
Paronychia lindheimeri |
|
Phenology | Flowering late spring–fall. | Flowering summer–fall. |
Habitat | Woodlands, fields, clearings, roadsides, waste places | Rocky places on limestone hills and high prairies |
Elevation | 0-200 m (0-700 ft) | 100-600 m (300-2000 ft) |
Distribution |
FL; GA
|
TX |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 5, p. 41. | FNA vol. 5, p. 39. |
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. chorizanthoides, P. lindheimeri var. longibracteata |
Name authority | (Chapman) Shuttleworth ex Chapman: Fl. South. U.S. ed. 3, 397. (1897) | Engelmann ex A. Gray: Boston J. Nat. Hist. 6: 152. (1850) |
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