Paronychia fastigiata |
Paronychia lindheimeri |
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clusterstem nailwort, fork-chickweed, hairy fork nailwort, hairy fork whitlow-wort |
fork nailwort |
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Habit | Plants annual; taproot filiform to slender. | Plants annual; taproot filiform to slender. | ||||||||
Stems | erect, usually much-branched, 4–30 cm, retrorsely to spreading-pubescent mostly on 1 side. |
erect to ascending, much-branched, 15–33 cm, glabrous to minutely puberulent. |
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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 to ovate, 2.5–5 mm, apex acuminate to long-acuminate, entire; blade linear to filiform, 8–15 × 0.4–0.8 mm, leathery, apex acute to submucronate, glabrous. |
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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, short-campanulate, with enlarged hypanthium and calyx slightly constricted proximally, 1.6–2 mm, appressed-puberulent proximally; sepals red-brown, midrib and lateral pair of veins absent to evident, oblong, 0.8–1.1 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, hood present, broadly rounded, awn divergently spreading, 0.4–0.6 mm, ± broadly conic in proximal 1/2 with pale-yellow, scabrous spine; staminodes filiform, 0.5–0.7 mm; style 1, cleft in distal 1/6, 0.6–0.7 mm. |
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Cymes | terminal, 25–70+-flowered, branched, loose to compact, forming clusters 3–10 mm wide. |
terminal and axillary, 5–20+-flowered, dichotomous, repeatedly branching and diffusely spreading, open, clusters 0.5–1.5 mm wide. |
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Utricles | obovoid to obconic, 0.7–1 mm, minutely papillate. |
ovoid-globose, 0.8–0.9 mm, smooth, glabrous. |
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2n | = 32, 36. |
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Paronychia fastigiata |
Paronychia lindheimeri |
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Phenology | Flowering summer–fall. | |||||||||
Habitat | Rocky places on limestone hills and high prairies | |||||||||
Elevation | 100-600 m (300-2000 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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TX |
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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.) |
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Key |
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Source | FNA vol. 5, p. 37. | FNA vol. 5, p. 39. | ||||||||
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Anychia fastigiata | P. chorizanthoides, P. lindheimeri var. longibracteata | ||||||||
Name authority | (Rafinesque) Fernald: Rhodora 38: 421. (1936) | Engelmann ex A. Gray: Boston J. Nat. Hist. 6: 152. (1850) | ||||||||
Web links |