Paronychia baldwinii |
Paronychia ahartii |
|
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Baldwin's nailwort |
Ahart's nailwort, Ahart's paronychia |
|
Habit | Plants annual, biennial, or perennial, often matted; taproot slender. | Plants annual; taproot filiform to stout. |
Stems | prostrate to erect, branched, 5–70 cm, mostly retrorsely to spreading-pubescent on 1 side or throughout. |
erect, tightly branched, 0.5–1.2 cm, glabrous. |
Leaves | stipules lanceolate, 2–6 mm, apex acuminate, entire; blade oblong to elliptic or oblanceolate, 3–25 × 1–6 mm, herbaceous, apex acute and briefly cuspidate, glabrous. |
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, ± short-cylindric, with enlarged hypanthium and calyx cylindric, 1–1.7 mm, glabrous to pubescent with short hairs, often minutely ciliate, sometimes glaucous; sepals greenish or greenish white to brownish, veins absent, ovate to oblong, 0.8–1.3 mm, herbaceous, margins white, 0.05–0.1 mm wide, scarious to papery, apex terminated by minute cusp, hood narrowly rounded, cusp light green to whitish, straight, short-conic, 0.1–0.15 mm, minutely scabrous; staminodes subulate, 0.2–0.3 mm; style 1, cleft in distal 4/5+, 0.2–0.4 mm. |
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, 20–40+-flowered, diffuse, lax, repeatedly forked or dichotomous. |
|
Utricles | ellipsoid, 1–1.3 mm, papillate distally. |
ovoid, ca. 1.3 mm, papillose distally. |
Paronychia baldwinii |
Paronychia ahartii |
|
Phenology | Flowering summer–fall. | Flowering spring. |
Habitat | Dunes, woodlands, fields, clearings, roadsides, riverbanks, hummocks, 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 |
AL; FL; GA; NC; SC; VA
|
CA |
Discussion | Chaudhri used duration and pubescence to recognize two subspecies of Paronychia baldwinii, characters that L. H. Shinners (1962c) found to vary independently in this species. (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. 34. | FNA vol. 5, p. 33. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Anychia baldwinii, Anychiasatrum baldwinii, Anychiasatrum riparium, P. baldwinii var. ciliata, P. baldwinii subsp. riparia, P. riparia | |
Name authority | (Torrey & A. Gray) Fenzl ex Walpers: Repert. Bot. Syst. 1: 262. (1842) | Ertter: Madroño 32: 87, fig. 1. (1985) |
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