Horkelia parryi |
Horkelia hispidula |
|
---|---|---|
chamise horkelia, Parry horkelia, Parry's horkelia |
White Mountain horkelia, White Mountains. horkelia |
|
Habit | Plants forming open mats. | Plants 0.7–3 dm diam. |
Stems | ascending to erect, 1–3(–3.5) dm. |
ascending to erect, 1–2.5 dm. |
Basal leaves | 4–10(–12) × 1–2 cm; leaflets 3–6(or 7) per side, narrowly obovate, 5–12(–15) × 4–8(–10) mm, 1/2–3/4 as wide as long, divided ± 1/4 to midrib into 5–10 oblong to broadly obovate teeth, sparsely pilose especially on midveins and margins. |
3–10 × 0.4–0.8 cm; leaflets (6–)10–14 per side, ± overlapping at least distally, cuneate to flabellate, 2.5–4(–6) mm, divided 3/4+ to midrib into 3–6 oblanceolate to obovate lobes, hispid. |
Cauline leaves | 1–4. |
3–7. |
Pedicels | (3–)5–15 mm. |
2–8(–12) mm. |
Flowers | 15 mm diam.; epicalyx bractlets linear-lanceolate to narrowly elliptic, 2–5 × 0.5–1.5 mm, ± 2/3 length of sepals; hypanthium 0.6–1 × 2.5–4 mm, less than 1/3 as deep as wide; sepals ± spreading to reflexed, lanceolate to narrowly elliptic, 3.5–6 mm; petals elliptic to obovate, 4–7 × 3 mm, apex obtuse to rounded to truncate or slightly emarginate; filaments 1–3 × 0.6–1.3 mm, anthers 0.6–1 mm; carpels (17–)20–50; styles 1.5–2.5 mm. |
3–15, 10 mm diam.; epicalyx bractlets linear to lanceolate, 1.5–3 × 0.2–0.5 mm, ± 2/3 length of sepals; hypanthium 1.8–3 × 3–4 mm, ± 1/2 as deep as wide, interior sparsely pilose; sepals reflexed, broadly lanceolate, 2.5–4(–5) mm, hairs stiff, 0.5 mm; petals not pink-tinged, oblanceolate to oblong or narrowly elliptic, 2.5–5 mm, apex rounded to truncate, sometimes slightly emarginate or mucronate; filaments white, 0.5–2 × 0.4–0.6 mm, glabrous or sparsely pilose adaxially, anthers 0.5–0.9 mm; carpels (10–)12–18(–20); styles 1.8–2.2 mm. |
Achenes | grayish, 1.3–1.5 mm, finely reticulate. |
brown to dark brown, 1.5–2 mm. |
2n | = 28. |
|
Horkelia parryi |
Horkelia hispidula |
|
Phenology | Flowering late spring–early summer. | Flowering summer. |
Habitat | Chaparral, pine-oak woodlands, primarily on Ione Formation, rarely on schist or limestone | Dry, rocky alpine flats, in subalpine conifer woodlands |
Elevation | 80–900 m (300–3000 ft) | 3000–3400 m (9800–11200 ft) |
Distribution |
CA
|
CA; NV |
Discussion | Of conservation concern. Horkelia parryi is known from the foothills of the western Sierra Nevada in Amador, Calaveras, and El Dorado counties, and is disjunct in Mariposa County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. When describing Horkelia hispidula, Rydberg associated it with H. sericata in his group Sericatae. The species is known only from the White Mountains of California and adjacent Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 258. | FNA vol. 9, p. 249. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Potentilla parryi | Potentilla hispidula |
Name authority | Greene: Bull. Calif. Acad. Sci. 2: 416. (1887) | Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 278. (1908) |
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