Ivesia baileyi |
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Bailey's ivesia, Owyhee ivesia |
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Habit | Plants green, ± tufted, often forming hanging clumps, sometimes rosetted. | ||||
Stems | pendent or prostrate to ascending, 0.5–2(–2.5) dm. |
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Basal leaves | planar, 3–12(–18) cm; sheathing base not or sparsely strigose abaxially; petiole 1–8 cm; lateral leaflets 2–6(–10) per side, separate to slightly overlapping distally, ovate or obovate to flabellate, 4–15(–25) mm, incised 1/4–3/4 to base into 3–11(–15) ovate to oblanceolate teeth or lobes, apex not setose, surfaces ± sparsely short-pilose or hirsute, ± glandular; terminal leaflets ± distinct. |
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Cauline leaves | 1–2; blade reduced. |
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Inflorescences | (1–)5–40-flowered, open, (1–)1.5–8(–10) cm diam. |
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Pedicels | 2–15(–30) mm. |
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Flowers | 4–10 mm diam.; epicalyx bractlets 5, narrowly lanceolate to ovate, 0.8–2.5 mm; hypanthium patelliform, 0.5–2 × 2–4 mm; sepals (1.2–)1.5–4 mm, acute; petals white or pale yellow, oblanceolate to narrowly spatulate, 1.5–2.5 mm; stamens 5, filaments 0.5–1.1 mm, anthers yellow, sometimes with reddish margins, oblong, 0.4–0.7 mm; carpels (1–)3–8, styles 0.9–1.8 mm. |
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Achenes | greenish white to light tan, 1.5–2 mm, smooth or rugose, ± carunculate. |
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Ivesia baileyi |
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Distribution |
CA; ID; NV; OR
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Discussion | Varieties 2 (2 in the flora). The two varieties accepted here were not recognized by D. D. Keck (1938), who instead treated Ivesia setosa as a variety of I. baileyi. Field investigations confirm that the three entities are reasonably distinct morphologically, with intergradation where their otherwise distinct ranges overlap in central Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 226. | ||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Ivesia > sect. Setosae | ||||
Sibling taxa | |||||
Subordinate taxa | |||||
Synonyms | Potentilla baileyi | ||||
Name authority | S. Watson: Botany (Fortieth Parallel), 90. (1871) | ||||
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