Paronychia ahartii


Madroño 32: 87, fig. 1. 1985.

Common names: Ahart’s nailwort
EndemicConservation concern
Treatment appears in FNA Volume 5. Treatment on page 33. Mentioned on page 32.

Plants annual; taproot filiform to stout. Stems erect, tightly branched, 0.5–1.2 cm, glabrous. Leaves: 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, 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. Utricles ovoid, ca. 1.3 mm, papillose distally.

Phenology: Flowering spring.
Habitat: Well-drained rocky outcrops, vernal pool edges, volcanic uplands
Elevation: 0-500 m


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.

Selected References


Lower Taxa

... more about "Paronychia ahartii"
Ronald L. Hartman +, John W. Thieret +  and Richard K. Rabeler +
Ertter +
Ahart’s nailwort +
0-500 m +
Well-drained rocky outcrops, vernal pool edges, volcanic uplands +
Flowering spring. +
Endemic +  and Conservation concern +
Anychia +, Anychiastrum +, Gastronychia +, Gibbesia +, Nyachia +, Odontonychia +  and Siphonychia +
Paronychia ahartii +
Paronychia +
species +