Drymocallis deseretica |
Rosaceae subfam. rosoideae |
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Deseret drymocallis or wood beauty |
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Habit | Herbs, shrubs, or subshrubs. | |
Caudex branches | short. |
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Stems | ± tufted, (1.5–)2.5–6(–6.5) dm; base 2–3(–4) diam., sparsely to densely septate-glandular. |
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Leaves | sparsely hairy; basal (5–)7–20 cm, leaflet pairs (2–)3; terminal leaflet broadly obovate to rhombic, (1.5–)2–4 × (1–)1.5–3 cm, teeth single or double, 5–9 per side, apex acute to obtuse; cauline 1–2, well developed, leaflet pairs 2–3. |
alternate, rarely opposite, pinnately compound, sometimes simple or palmately compound; stipules present, rarely absent. |
Inflorescences | 3–15(–20)-flowered, leafy, ± compact, (1/6–)1/5–1/3(–1/2) of stem, narrow, branch angles 10–20°. |
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Pedicels | 2–15 (proximal to 20) mm, predominantly short-hairy, often velutinous, not or sparsely to moderately septate-glandular. |
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Flowers | opening widely; epicalyx bractlets linear to lanceolate or narrowly elliptic, (2.5–)3–8 × 0.5–2(–3) mm; sepals spreading, (5–)6–12(–15) mm, apex usually acute, sometimes obtuse; petals rarely overlapping, spreading, cream-white to light yellow, narrowly to broadly obovate, (4–)6–10 × (2.5–)3.5–6(–7) mm, usually shorter than sepals; filaments 1–3 mm, anthers 0.8–1 mm; styles very thickened, 1 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). |
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, 1.2–1.5 mm. |
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x | = 7(8). |
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Drymocallis deseretica |
Rosaceae subfam. rosoideae |
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Phenology | Flowering (May–)Jun–Sep. | |
Habitat | Openings among sagebrush, aspen, fir, and/or spruce forests, often where moist or rocky, below cliffs | |
Elevation | 2000–3300 m (6600–10800 ft) | |
Distribution |
UT; WY |
North America; Mexico; Central America; South America; West Indies; Bermuda; Eurasia; Africa; Atlantic Islands; Indian Ocean Islands; Pacific Islands; Australia |
Discussion | Drymocallis deseretica is common in the Wasatch and western Uintah mountains of northern and central Utah, where it has usually been treated as Potentilla glandulosa var. intermedia (= D. glabrata) or P. glandulosa var. pseudorupestris (= D. pseudorupestris var. saxicola). It differs from both taxa in its more compact inflorescences, predominantly short-hairy pedicels, and sepals that conspicuously enlarge in fruit, which create a distinctive aspect. Comparable plants with shorter, obtuse sepals occur in the Raft River Mountains; their optimal placement remains to be determined. Inclusion of Wyoming in the species range is based on Goodding 1993 (UT) from Bridger Peak, Carbon County. Drymocallis deseretica intergrades with D. glabrata to the north and D. arizonica to the south, with the exact range yet to be determined. (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.) |
Source | FNA vol. 9, p. 291. | FNA vol. 9, p. 23. |
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Sibling taxa | ||
Subordinate taxa | ||
Name authority | Ertter: J. Bot. Res. Inst. Texas 1: 41, fig. 2. (2007) | Arnott: Botany, 107. (1832) |
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