Potentilla brevifolia |
Potentilla crinita |
|
---|---|---|
short-leaf cinquefoil, sparse-leaf cinquefoil |
bearded cinquefoil, Lemmon's cinquefoil |
|
Stems | (0.5–)1.5–4.5 dm, lengths 2–4(–5) times basal leaves. |
|
Basal leaves | petiole 1–4 cm, eglandular hairs absent or sparse, spreading, less than 1 mm, weak, glands abundant. |
pinnate, 3–15(–20) cm; petiole 1–10(–15) cm, long hairs dense, appressed, 1.5–2.5 mm, usually stiff, short and crisped hairs usually absent, cottony hairs absent, glands sparse, often obscured; leaflets often conduplicate, lateral ones evenly paired, (3–)4–6(–7) per side on distal 1/3–2/3 of leaf axis, distal pairs ± decurrent, often confluent with terminal leaflet, larger leaflets narrowly cuneate or oblanceolate to obovate, 1–3(–4) × 0.2–0.8(–1) cm, distal 1/4–1/2(–2/3) or less of margin incised ± 1/4 or less to midvein, teeth (0–)1–5(–9) per side, 1–2 mm, surfaces ± similar to ± dissimilar, abaxial silvery to greenish, long hairs usually dense (at least on primary veins), 1–2 mm, stiff, short-crisped hairs absent or sparse, cottony hairs usually absent, glands sparse to common, often obscured, adaxial ± green, long hairs sparse to common, sometimes absent, short, crisped, and cottony hairs absent, glands sparse. |
Cauline leaves | 1–3(–4). |
|
Inflorescences | (5–)10–30-flowered. |
|
Pedicels | 0.5–2(–4) cm. |
|
Flowers | epicalyx bractlets lanceolate-elliptic to ovate, 2–4 × 0.8–2 mm; sepals 3–5(–7) mm, apex broadly acute to obtuse; petals 3.5–6.5 × 3–5 mm; filaments 1–2.5 mm, anthers 0.5–0.6 mm; carpels 10–15. |
epicalyx bractlets lanceolate, 1.5–4.5 × 0.5(–1) mm, 1/2–2/3 as long as sepals, abaxial vestiture similar to or ± sparser than sepals, not glabrescent, straight hairs common, crisped or cottony hairs usually absent; hypanthium 2.5–5 mm diam.; sepals (3–)4–7 mm, apex acute to long acuminate; petals (3–)4.5–7.5(–8) × 4–6 mm; filaments 1–3 mm, anthers 0.6–1.1 mm; carpels 5–20, styles 1.6–2.6 mm. |
Achenes | 1–1.5 mm. |
1.4–1.7 mm, smooth or slightly rugose. |
Potentilla brevifolia |
Potentilla crinita |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Moist rocky slopes and talus, alpine grassy areas, subalpine conifer woodlands | Dry meadows, pygmy conifer, oak, aspen, or montane conifer woodlands |
Elevation | 2500–3600 m (8200–11800 ft) | 2000–2600 m (6600–8500 ft) |
Distribution |
ID; MT; NV; OR; WY
|
AZ; CO; NM; NV; UT
|
Discussion | Potentilla brevifolia is found mainly in alpine situations in the Pioneer, Sawtooth, Smoky, and White Cloud mountains of central Idaho; the Madison Range of western Montana; the Jarbidge Range of northeastern Nevada; the Blue, Steens, and Wallowa mountains of eastern Oregon; and the Teton Range of northwestern Wyoming. The elongate caudices are easily covered by moving soil and talus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Potentilla crinita occurs mainly in the upper foothills and mountains from southern Nevada to south-central Utah, northern Arizona, and northwestern New Mexico and is disjunct to southwestern Colorado (Archuleta County). It tends to grow on somewhat drier, rockier sites than co-occurring species of Potentilla. The often conduplicate leaflets, falcate in outline, bear relatively few, small teeth. Two varieties are sometimes recognized, based on leaflet and vestiture characters that do not reliably coincide. Potentilla crinita can hybridize with P. hippiana where the two species overlap, in spite of ecological partitioning. N. H. Holmgren (1997b) noted the type of P. crinita may be such a hybrid. If correct, then P. lemmonii would be used for the species unless the name P. crinita were to be conserved with a conserved type. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 188. | FNA vol. 9, p. 164. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Brevifoliae | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Leucophyllae |
Sibling taxa | ||
Synonyms | Ivesia lemmonii, P. crinita var. lemmonii, P. lemmonii | |
Name authority | Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 442. (1840) | A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 41. (1849) |
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