Ivesia shockleyi |
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Shockley's ivesia, sky mousetail |
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Habit | Plants green to grayish green, ± densely matted. | ||||
Stems | prostrate to ascending, 0.2–1.5 dm. |
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Basal leaves | tightly to loosely cylindric, (1–)2–12(–14) cm; sheathing base strigose to hirsute abaxially; petiole 0.5–4 cm; lateral leaflets (3–)5–15(–18) per side, separate to overlapping at least distally, ± flabellate, 1–4(–6) mm, incised to base or nearly so into 2–10(–12) oblanceolate to obovate or elliptic lobes, apex sometimes setose, surfaces ± sparsely hirsute, ± glandular; terminal leaflets indistinct. |
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Cauline leaves | (0–)1; blade vestigial or reduced. |
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Inflorescences | 2–20-flowered, ± open, 0.5–4(–6) cm diam. |
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Pedicels | 3–10(–12) mm. |
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Flowers | 5–10 mm diam.; epicalyx bractlets 5, elliptic or narrowly oblong to ovate, 0.7–2(–3) mm; hypanthium patelliform, 1–2 × 2.5–4.5(–5) mm; sepals 1.5–3.5(–4) mm, acute to obtuse; petals ± yellow, oblanceolate to spatulate or narrowly obovate, 1–3 mm; stamens 5, filaments 0.8–1.8 mm, anthers yellow, oblong, 0.4–0.9 mm; carpels 2–5(–6), styles 1.8–2.5 mm. |
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Achenes | greenish cream to light brown, 1.5–2.2(–2.5) mm, smooth, prominently carunculate. |
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Ivesia shockleyi |
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Distribution |
CA; NV; OR; UT
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 227. | ||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Ivesia > sect. Setosae | ||||
Sibling taxa | |||||
Subordinate taxa | |||||
Synonyms | Potentilla shockleyi | ||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 23: 263. (1888) | ||||
Web links |