Potentilla wheeleri |
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Kern cinquefoil, Wheeler's cinquefoil |
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Stems | 0.2–2.5 dm. |
Basal leaves | palmate, 1.5–9.5 cm; petiole 1–7 cm, long hairs abundant to dense, spreading to appressed, 1–2 mm, weak to stiff, glands ± abundant; leaflets 5, central cuneate-elliptic to obovate, 0.5–2.5 × 0.3–1.5 cm, scarcely to distinctly petiolulate, distal 1/3 of margins evenly incised ± 1/4 to midvein, teeth 2–4(–5) per side, surfaces gray-green, long hairs abundant to dense, 1–1.5 mm, glands ± abundant, sometimes obscured. |
Inflorescences | 1–20-flowered. |
Pedicels | 0.5–1.5 cm. |
Flowers | epicalyx bractlets lanceolate to ovate-elliptic, 1–3.5 × 1–1.5 mm; hypanthium 2–4 mm diam.; sepals 2–5 mm, apex ± acute; petals ± paler abaxially, bright yellow adaxially, ± obcordate, 3–6 × 2–5 mm; filaments 1–2 mm, anthers 0.5 mm; carpels ca. 20, styles (1.2–)1.5–2 mm. |
Achenes | 1–1.5 mm, lightly rugose. |
Short | hairs not well differentiated from long hairs, absent or sparse throughout. |
Potentilla wheeleri |
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Phenology | Flowering May–Sep. |
Habitat | Sandy flats, streamsides, lake margins, open conifer woodlands, alpine fellfields |
Elevation | 1800–3500 m (5900–11500 ft) |
Distribution |
CA
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Discussion | Potentilla wheeleri is found in the southern Sierra Nevada and San Bernardino Mountains of southern California. Compact plants on the summit of Mount San Gorgonio, described by Jepson as var. paupercula, show no consistent difference to justify their taxonomic segregation. Variety viscidula Rydberg has been misapplied to Arizona populations now called P. rhyolitica. Plants identified as P. wheeleri (excluding P. rimicola) from the Sierra San Pedro Mártir (Baja California) stand as a distinct species, P. luteosericea Rydberg (= P. pinetorum Wiggins). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 185. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Subviscosae |
Sibling taxa | |
Synonyms | P. wheeleri var. paupercula |
Name authority | S. Watson: Proc. Amer. Acad. Arts 11: 148. (1876) |
Web links |