Paronychia canadensis |
Paronychia argyrocoma |
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fork-chickweed, smooth fork whitlow-wort, smooth-fork nailwort |
silverling, silvery nailwort, silvery whitlow-wort |
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Habit | Plants annual; taproot filiform to slender. | Plants perennial, matted; caudex woody. |
Stems | erect, dichotomously branched, 3–40 cm, ultimate branches filiform, glabrous. |
prostrate to ascending, much-branched, 5–60 cm, often retrorsely pubescent on 1 side. |
Leaves | stipules subulate to lanceolate, 0.5–4 mm, apex acuminate, entire; blade usually dotted or blotched, elliptic to obovate, 3–30 × 1–11 mm, herbaceous, apex acute to obtuse or cuspidate, glabrous. |
stipules lanceolate, 2.5–8 mm, apex acute, entire; blade linear to linear-lanceolate or -oblanceolate, 5–30 × 0.5–2 mm, leathery, apex acute, often mucronate, sparsely appressed-pubescent. |
Flowers | 5-merous, ± short-cylindric, with enlarged hypanthium and calyx cylindric, 0.9–1.3 mm, glabrous; sepals greenish to brownish, midrib and lateral pair of veins prominent, ovate to oblong, 0.5–1 mm, herbaceous, margins white to translucent, 0.03–0.1 mm wide, scarious, apex terminated by mucro, hood rounded-triangular, mucro triangular, 0.07–0.15 mm, glabrous; staminodes absent or indistinct; styles 2, 0.2–0.3 mm. |
5-merous, short-cylindric to ovoid, with enlarged hypanthium and calyx cylindric to tapering distally, 3.5–6.5 mm, pubescent with antrorse, slightly spreading, silky hairs; sepals greenish to brownish, veins 3, obscure, ribs absent, narrowly lanceolate, 2–3.2 mm, leathery to rigid, margins translucent, ca. 0.1 mm wide, scarious, apex terminated by awn, hood narrowly triangular, awn straight to slightly divergent, white, 0.9–2 mm, scabrous, spinose; staminodes narrowly triangular, 0.4–0.6 mm; style 1, cleft in distal 1/6, 1.4–2 mm. |
Cymes | diffuse, flowers solitary (paired) in axils of leafy bracts. |
terminal, 15–25+-flowered, very compact, forming conspicuous glomerules 10–20 mm wide. |
Utricles | ovoid to globose, ca. 0.5 mm, granular in distal 1/2, glabrous. |
oblong, 1.5–1.8 mm, smooth, pubescent distally. |
Paronychia canadensis |
Paronychia argyrocoma |
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Phenology | Flowering spring–fall. | Flowering spring–early fall. |
Habitat | Woodlands, thickets, fields, clearings, roadsides, waste places | On or among rocks |
Elevation | 0-1300 m (0-4300 ft) | 200-1800 m (700-5900 ft) |
Distribution |
AL; AR; CT; DC; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; NC; NE; NH; NJ; NY; OH; OK; PA; RI; SC; TN; VA; VT; WI; WV; ON
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GA; KY; MA; MD; ME; NC; NH; TN; VA; VT; WV
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Discussion | Plants of Paronychia argyrocoma with glabrous or barely scabrous leaves and glabrous sepal awns have sometimes been recognized as var. albimontana. They are found in both the southern and northern areas of the species range, but, curiously, not in the central portion (M. N. Chaudhri 1968). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 5, p. 34. | FNA vol. 5, p. 33. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | Queria canadensis, Anychia canadensis | Anychia argyrocoma, P. argyrocoma subsp. albimontana, P. argyrocoma var. albimontana |
Name authority | (Linnaeus) Alph. Wood: Class-Book Bot. ed. s.n.(b), 262. (1861) | (Michaux) Nuttall: Gen. N. Amer. Pl. 1: 160. (1818) |
Web links |