Paronychia drummondii |
Paronychia pulvinata |
|
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Drummond's nailwort |
Rocky Mountain nailwort |
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Habit | Plants annual or biennial; taproot filiform to slender. | Plants perennial, densely cespitose, cushion-forming; caudex much-branched, woody. |
Stems | sprawling t2o erect, nearly simple to much-branched especially distally, 7–35 cm, retrorsely pubescent on 1 side or throughout. |
prostrate, much-branched, 5–10 cm, puberulent. |
Leaves | stipules lanceolate to ovate, 5–10 mm, apex acuminate, entire; blade linear-oblong to oblanceolate, 5–30 × 1–7 mm, leathery, apex acute to cuspidate, moderately antrorsely pubescent. |
stipules ovate, 3–6 mm, apex subobtuse, entire; blade narrowly elliptic-oblong or oblong to narrowly elliptic-oblanceolate, 2–5 × 0.2–1.8(–2) mm, fleshy, apex obtuse to subacute, glabrous. |
Flowers | 5-merous, ± short-campanulate, with prominently enlarged hypanthium and calyx flaring distally, (1.5–)2–2.3 mm, pubescent proximally with short, hooked hairs; sepals greenish to brownish or red-brown, white distally, veins absent, oblong to obovate, 1–1.5 mm, leathery to rigid, margins white, 0.2–0.3 mm wide, papery, apex terminating in divergent awn, hood broadly rounded, awn white, stout-conic, 0.5–0.6 mm, glabrous; staminodes filiform, ± 0.3 mm; style 1, cleft in distal 1/5, 0.3–0.6 mm. |
mostly solitary at end of shoots, almost concealed by leaves.; flowers 5-merous, elliptic-oblong, with enlarged hypanthium and calyx straight to tapering distally, 2.5–2.8 mm, densely appressed-puberulent, sparsely so distally; sepals whitish to green, veins absent, narrowly oblong to ovate-oblong, 1.5–1.7 mm, papery to herbaceous, margins white, 0.2–0.3 mm wide, papery, apex with subterminal awn, hood ascending as continuation of sepal, broadly rounded to notched, awn erect, white, 0.3–0.6(–1) mm, ± glabrous spine; staminodes filiform, 0.7–0.9 mm; style 1, cleft in distal 1/3, 0.8–1 mm. |
Cymes | terminal, 25+-flowered, much-branched but congested, clusters 5–20 mm wide. |
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Utricles | ellipsoid to subglobose, 0.5–0.8 mm, minutely papillate distally. |
ovoid, 1.3–1.5 mm, smooth, glabrous. |
2n | = 32. |
|
Paronychia drummondii |
Paronychia pulvinata |
|
Phenology | Flowering spring–fall. | Flowering summer. |
Habitat | Sandy woodlands, clearings, roadsides | Rocky slopes and summit screes in alpine regions |
Elevation | 0-100 m (0-300 ft) | 3300-4200 m (10800-13800 ft) |
Distribution |
LA; OK; TX
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CO; UT; WY
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Discussion | Chaudhri described two subspecies of Paronychia drummondii based on differences in leaf pubescence, flower size, and style length. We follow B. L. Turner (1983b), who noted that many specimens demonstrate intermediate characteristics, suggesting that taxonomic recognition not be given to the extremes. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 5, p. 36. | FNA vol. 5, p. 40. |
Parent taxa | Caryophyllaceae > subfam. Paronychioideae > Paronychia | Caryophyllaceae > subfam. Paronychioideae > Paronychia |
Sibling taxa | ||
Synonyms | P. drummondii subsp. parviflora | P. pulvinata var. longiaristata |
Name authority | Torrey & A. Gray: Fl. N. Amer. 1: 170. (1838) | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 58. (1864) |
Web links |