Paronychia fastigiata |
Paronychia depressa |
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clusterstem nailwort, fork-chickweed, hairy fork nailwort, hairy fork whitlow-wort |
spreading nailwort |
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Habit | Plants annual; taproot filiform to slender. | Plants perennial, often matted; caudex branched, woody. | ||||||||
Stems | erect, usually much-branched, 4–30 cm, retrorsely to spreading-pubescent mostly on 1 side. |
prostrate to sprawling, much-branched, 8–15 cm, scabrous-puberulent to puberulent throughout. |
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Leaves | stipules subulate to lanceolate, 0.5–4.5 mm, apex acuminate, sometimes fimbriate; blade usually dotted or blotched, oblanceolate to elliptic or obovate, 2–25 × 0.5–7(–10) mm, herbaceous to leathery, apex subobtuse to acute or cuspidate, glabrous or occasionally with very few scattered trichomes along midrib. |
stipules lanceolate, 2–8 mm, apex acuminate, entire; blade linear, 8–15(–23) × 0.5–1 mm, leathery, apex shortly cuspidate, puberulent. |
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Flowers | 5-merous, short-cylindric, with enlarged hypanthium and calyx ± cylindric, 1.1–1.6 mm, glabrous or with few scattered hairs; sepals greenish to brownish, veins absent, linear-oblong, 1–1.2 mm, leathery to rigid, margins white to translucent, 0.05–0.1 mm wide, scarious, apex terminated by mucro, hood narrowly rounded, mucro short-conic, 0.05–0.3 mm, ± minutely scabrous; staminodes absent; styles 2, 0.07–0.6(–0.7) mm. |
5-merous, ± ovate, with prominently enlarged hypanthium and calyx tapering only slightly distally, 2.3–3.5 mm, puberulent; sepals green to purple-brown, midrib and lateral pair of veins ± obscure, oblong to lanceolate-oblong, 1.7–2 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, hood prominent, rounded-triangular, awn divergent, conic in proximal 1/2–2/3 with yellowish, scabrous spine 0.7–0.9 mm; staminodes filiform, 0.5–0.8 mm; style 1, cleft in distal 1/3–2/3, 0.8–1.4 mm. |
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Cymes | terminal, 25–70+-flowered, branched, loose to compact, forming clusters 3–10 mm wide. |
terminal, 3–7-flowered, branched, congested, in clusters 7–25 mm wide. |
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Utricles | obovoid to obconic, 0.7–1 mm, minutely papillate. |
± ovoid, 0.8–0.9 mm, smooth, glabrous. |
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2n | = 32, 36. |
= 32. |
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Paronychia fastigiata |
Paronychia depressa |
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Phenology | Flowering summer. | |||||||||
Habitat | Dry plains, rocky ridges, hillsides | |||||||||
Elevation | 800-3000 m (2600-9800 ft) | |||||||||
Distribution |
AL; AR; CT; DC; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; WI; WV; ON; QC
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CO; SD; WY
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Discussion | Varieties 3 (3 in the flora). The varieties here recognized are sympatric over at least portions of their ranges. A detailed study on infraspecific variation within Paronychia fastigiata is warranted. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paronychia depressa is considered to be closely related to the nearly allopatric P. jamesii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 5, p. 37. | FNA vol. 5, p. 36. | ||||||||
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Anychia fastigiata | P. jamesii var. depressa, P. depressa var. brevicuspis, P. depressa var. diffusa | ||||||||
Name authority | (Rafinesque) Fernald: Rhodora 38: 421. (1936) | (Torrey & A. Gray) Nuttall ex A. Nelson: Bull. Torrey Bot. Club 26: 236. (1899) | ||||||||
Web links |