Paronychia herniarioides |
Paronychia erecta |
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coastal-plain nailwort |
squareflower |
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Habit | Plants annual, matted; taproot filiform. | Plants perennial (occasionally biennial), often matted; taproot stout. |
Stems | prostrate to erect, dichotomously branched, 3–20 cm, retrorsely to spreading- pubescent throughout. |
prostrate to ascending, branched especially distally, retrorsely to spreading-pubescent throughout (when pubescent); flowering stems 8–48 cm; sterile stems 2–10 cm. |
Leaves | stipules ovate-lanceolate, 0.5–7 mm, apex acuminate, entire; blade elliptic to oblong or ovate, or basal ones spatulate, 2–18 × 1–6 mm, herbaceous to leathery, apex mucronate to short-spine-tipped, moderately antrorsely pubescent. |
stipules ovate-lanceolate, 2–12 mm, apex acuminate, entire; blade linear to spatulate-oblanceolate, 4–40 × 1–4 mm, leathery, apex obtuse to acute, moderately antrorsely pubescent. |
Inflorescences | diffuse, flowers solitary (paired) in axils of leafy bracts. |
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Flowers | 5-merous, broadly ovoid, with enlarged hypanthium and calyx tapering distally, 2–2.3 mm, glabrous to strigose; sepals brownish to yellowish, veins absent, subulate to lanceolate, 1–1.7 mm, leathery to rigid, margins whitish, 0.03–0.1 mm wide, papery, apex terminated by awn, hood obscure, small flange, awn straight to slightly divergent, yellow, 0.3–0.4 mm, scabrous to antrorsely strigose, spinose; staminodes narrowly triangular, 0.2–0.3 mm; style 1, cleft in distal 1/8, 0.7–0.9 mm. |
5-merous, narrowly ellipsoid, with slightly enlarged hypanthium and calyx tapering distally, 2.3–3.5 mm, glabrous to slightly puberulent proximally with straight to hooked hairs; sepals red-brown, white or whitish distally, veins absent, narrowly oblong to lanceolate-oblong, 1.4–2 mm, papery, margins white, ca. 0.1 mm wide, papery, apex rounded, hood formed from slight incurving, awn or mucro absent; staminodes narrowly oblong, 0.4 mm; style 1, cleft in distal 1/10, 1.3–1.7 mm. |
Utricles | ellipsoid to subglobose, 0.5–0.8 mm, essentially smooth, glabrous. |
ovoid to ellipsoid, 1–1.2 mm, rugulose, glabrous. |
Cymes | terminal, 15–200+-flowered, branched, densely to loosely grouped to form subcorymbose clusters 5–50 mm wide. |
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Paronychia herniarioides |
Paronychia erecta |
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Phenology | Flowering spring–fall. | Flowering spring–fall. |
Habitat | Sandy ridges, dunes, pine/oak woodland | Coastal dunes, sandflats, pine/oak woodlands |
Elevation | 0-300 m (0-1000 ft) | 0-100 m (0-300 ft) |
Distribution |
FL; GA; NC; SC
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AL; FL; LA; MS
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Discussion | Plants with pubescent stems, strigose leaves, and pubescent receptacles have been recognized as var. corymbosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 5, p. 38. | FNA vol. 5, p. 37. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Anychia herniarioides, Anychiastrum herniarioides, Gastronychia herniarioides | Siphonychia erecta, Odontonychia corymbosa, Odontonychia erecta, P. erecta var. corymbosa |
Name authority | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 159. (1818) | (Chapman) Shinners: Sida 1: 102. (1962) |
Web links |