Drymocallis deseretica
Drymocallis fissa
Deseret drymocallis or wood beauty
bigflower cinquefoil, leafy drymocallis or wood beauty
short.
short to elongate.
± tufted, (1.5–)2.5–6(–6.5) dm;
base 2–3(–4) diam., sparsely to densely septate-glandular.
tufted to loosely spaced, (1.2–)1.5–3.5(–4.5) dm;
base (1.5–)2–3 mm diam., ± densely septate-glandular.
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.
sparsely to moderately hairy;
basal (3–)7–19 cm, leaflet pairs (4–)5–6(–10; additional reduced leaflets sometimes interspersed);
terminal leaflet usually broadly obovate-cuneate, sometimes elliptic, (1–)1.5–3.5(–5) × (1–)1.5–3(–3.5) cm, teeth single or double, 5–13 per side, apex rounded to obtuse;
cauline 1–3, well developed, leaflet pairs 4–6(–10).
3–15(–20)-flowered, leafy, ± compact, (1/6–)1/5–1/3(–1/2) of stem, narrow, branch angles 10–20°.
5–15-flowered, leafy, congested to ± open, 1/6–1/2 of stem, narrow to wide, branch angles 15–30(–40)°.
2–15 (proximal to 20) mm, predominantly short-hairy, often velutinous, not or sparsely to moderately septate-glandular.
1–12 mm, short-hairy, septate-glandular.
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.
opening widely;
epicalyx bractlets linear-oblanceolate, 3–7 × 1–2 mm;
sepals spreading, 6–10 mm, apex acute to acuminate;
petals overlapping, spreading, yellow, broadly obovate, 7–11 × 5–11 mm, equal to or exceeding sepals;
filaments 1.5–4.5 mm, anthers (0.7–)1–1.4 mm;
styles thickened, 1 mm.
light brown, 1.2–1.5 mm.
light brown, 1 mm.
Drymocallis deseretica
Drymocallis fissa
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.)
Drymocallis fissa is distinctive in its relatively numerous leaflets (often with additional smaller ones), large flowers, and large, elongate anthers. It is most abundant in the Colorado Front Range, extending into the Medicine Bow Mountains of Wyoming. Outlying populations occur at least as far north as the Bighorn Mountains of northern Wyoming and the Black Hills of South Dakota. Tentatively included here are large-anthered populations from the eastern Uintah Mountains of Utah, though these often have fewer leaflets and smaller flowers of unknown color; they may represent a unique taxon worthy of separate recognition. Possible collections of D. fissa from New Mexico, including the type of Potentilla fissa var. major Torrey & A. Gray, are of uncertain placement in that they combine features of D. arguta, D. arizonica, and D. fissa. Reports from other states, including Montana, are probably all based on misidentified specimens.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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