Drymocallis pseudorupestris |
Drymocallis arizonica |
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cliff drymocallis, cliff woodbeauty, false rock loving cinquefoil, Rocky Mountain sticky cinquefoil |
Arizona drymocallis or wood beauty |
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Caudex branches | elongate. |
short. |
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Stems | openly tufted to loosely spaced, (0.3–)0.6–4 dm; base 1–3 mm diam., ± densely septate-glandular. |
± tufted, (1.5–)2.5–6 dm; base 1.5–2.5 mm diam., sparsely to 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. |
sparsely to moderately hairy; basal 5–22 cm, leaflet pairs (2–)3–4(–5); terminal leaflet broadly obovate-elliptic, 1–5 × 1–2.5(–4) cm, teeth double, 6–18 per side, apex rounded to acute; cauline 1–4, well developed, leaflet pairs 2–3. |
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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)°. |
5–30-flowered, not notably leafy, compact, 1/10–1/4(–1/2) of stem, narrow, branch angles 5–25°. |
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Pedicels | 3–20 (proximal to 40) mm, not or sparsely to moderately short-hairy, predominantly septate-glandular. |
1–10 (proximal to 20) mm, sparsely to ± densely 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. |
opening widely; epicalyx bractlets linear-lanceolate to narrowly elliptic, 2–4(–7) × 1–2 mm; sepals spreading, 4–6(–11) mm, apex ± acute; petals not or scarcely overlapping, spreading, cream-white, ± obovate, 3–6 × 2.5–5 mm, shorter than or equal to sepals; filaments 1–3 mm, anthers 0.7–1 mm; styles thickened, 1 mm. |
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Achenes | light brown, 1 mm. |
light brown, 1 mm. |
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2n | = 14. |
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Drymocallis pseudorupestris |
Drymocallis arizonica |
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Phenology | Flowering May–Jul. | |||||||||
Habitat | Streamsides, rocky sites, open forest floors, pine and aspen forests | |||||||||
Elevation | 1800–3200 m (5900–10500 ft) | |||||||||
Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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AZ; UT |
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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.) |
Drymocallis arizonica encompasses populations in Arizona north of the Mogollon Rim and in Utah as far north as Garfield and Sevier counties, including the Henry Mountains. It is most distinctive in northern Arizona, where plants commonly have basal leaves with four pairs of lateral leaflets and compact inflorescences. The species intergrades with D. convallaria but is in general shorter and more likely multistemmed. It also shares similarities with D. pseudorupestris but has more developed cauline leaves and a more compact inflorescence. The intergrade zone between all three species and D. deseretica in southwestern Utah is particularly problematic and perhaps indicative of yet additional taxa deserving recognition. (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. 284. | ||||||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Potentilla pseudorupestris, D. glandulosa subsp. pseudorupestris, P. glandulosa subsp. pseudorupestris, P. glandulosa var. pseudorupestris, P. rupestris var. americana | D. glandulosa subsp. arizonica, Potentilla glandulosa subsp. arizonica, P. macdougalii | ||||||||
Name authority | (Rydberg) Rydberg: Monogr. N. Amer. Potentilleae, 194. (1898) | Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 373. (1908) | ||||||||
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