Drymocallis pseudorupestris |
Rosaceae subfam. rosoideae |
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cliff drymocallis, cliff woodbeauty, false rock loving cinquefoil, Rocky Mountain sticky cinquefoil |
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Habit | Herbs, shrubs, or subshrubs. | |||||||||
Caudex branches | elongate. |
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Stems | openly tufted to loosely spaced, (0.3–)0.6–4 dm; base 1–3 mm diam., ± densely septate-glandular. |
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Leaves | glabrate or sparsely to ± densely hairy; basal (2–)3–16 cm, leaflet pairs (2–)3–4(–5); terminal leaflet broadly obovate-cuneate to flabellate, 0.2–3(–4) × 0.5–3 cm, teeth single or double, 2–15 per side, apex usually rounded to truncate, sometimes obtuse; cauline 0–2, reduced, leaflet pairs 2–3. |
alternate, rarely opposite, pinnately compound, sometimes simple or palmately compound; stipules present, rarely absent. |
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Inflorescences | 2–40-flowered, not or ± leafy, open, 1/6–3/4(–4/5) of stem, ± wide, branch angles (10–)20–40(–50)°. |
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Pedicels | 3–20 (proximal to 40) mm, not or sparsely to moderately short-hairy, predominantly septate-glandular. |
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Flowers | opening widely; epicalyx bractlets linear to elliptic, 2–6 × 1–2 mm; sepals spreading, 4–7(–9) mm, apex acute to obtuse, apiculate; petals overlapping or not, spreading, cream-white to pale yellow (red-tinged in var. crumiana), narrowly to broadly obovate, 4–12 × 3–11 mm, longer than sepals; filaments 1–4 mm, anthers 0.7–1.2 mm; styles thickened, 1–1.5 mm. |
torus usually enlarged, sometimes small or absent; carpels 1–260(–450), distinct, free, styles distinct, rarely connate (Roseae); ovules 1(or 2), collateral (Rubeae) or superposed (Fallugia, Filipendula). |
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Fruits | achenes or aggregated achenes sometimes with fleshy, urn-shaped hypanthium or enlarged torus, sometimes aggregated drupelets; styles persistent or deciduous, not elongate (elongate but not plumose in Geum). |
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Achenes | light brown, 1 mm. |
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x | = 7(8). |
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Drymocallis pseudorupestris |
Rosaceae subfam. rosoideae |
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Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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North America; Mexico; Central America; South America; West Indies; Bermuda; Eurasia; Africa; Atlantic Islands; Indian Ocean Islands; Pacific Islands; Australia |
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Discussion | Varieties 3 (3 in the flora). Drymocallis pseudorupestris occurs from Alberta and Washington to California and Utah, mostly in montane habitats; it is the species most often associated with rocky habitats, including talus slopes, for which its relatively elongate caudex branches are an obvious adaptation. Vestiture is dominated by abundant septate glands on stems and in the inflorescences. Except for var. pseudorupestris, which occurs only in the northeastern part of the species range, plants are relatively short, usually less than 2.5 dm. Three intergrading varieties accommodate the extremes at the northeastern and southern ends of the range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variation in the number of genera in subfam. Rosoideae is due to differences in generic delimitation between D. Potter et al. (2007) and the authors of some Potentilleae genera. Cyanogenic glycosides and sorbitol are absent in the subfamily. Tribes 6, genera 28–35, species ca. 1600 (6 tribes, 26 genera, 302 species, including 1 hybrid, 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. 289. | FNA vol. 9, p. 23. | ||||||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis | Rosaceae | ||||||||
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Subordinate taxa | ||||||||||
Synonyms | Potentilla pseudorupestris, D. glandulosa subsp. pseudorupestris, P. glandulosa subsp. pseudorupestris, P. glandulosa var. pseudorupestris, P. rupestris var. americana | |||||||||
Name authority | (Rydberg) Rydberg: Monogr. N. Amer. Potentilleae, 194. (1898) | Arnott: Botany, 107. (1832) | ||||||||
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