Drymocallis fissa
Drymocallis micropetala
bigflower cinquefoil, leafy drymocallis or wood beauty
Wasatch drymocallis or wood beauty
short to elongate.
short to elongate.
tufted to loosely spaced, (1.2–)1.5–3.5(–4.5) dm;
base (1.5–)2–3 mm diam., ± densely septate-glandular.
solitary or ± tufted, (2.5–)3–6 dm;
base 2–4 mm diam., septate-glandular.
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).
moderately hairy;
basal (6–)10–24 cm, leaflet pairs 2–3;
terminal leaflet obovate, 2–5 × 1.5–4 cm, teeth double, (5–)8–12(–15) per side, apex obtuse;
cauline 1–3, well developed, leaflet pairs 2–3.
5–15-flowered, leafy, congested to ± open, 1/6–1/2 of stem, narrow to wide, branch angles 15–30(–40)°.
10–20(–30)-flowered, leafy, congested clusters terminating branches, 1/10–1/3(–1/2) of stem, narrow, branch angles 5–20°.
1–12 mm, short-hairy, septate-glandular.
1–5 mm, predominantly short-hairy, often velutinous, sparsely to moderately septate-glandular.
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.
opening widely;
epicalyx bractlets linear to oblanceolate-elliptic, 2–4(–6) × (0.5–)1–1.5 mm;
sepals spreading, 4–7(–9) mm, apex obtuse;
petals not overlapping, spreading, cream-white, obovate-elliptic, 2–5 × 1.5–3.5 mm, shorter than sepals;
filaments 1–2 mm, anthers 0.5–0.8 mm;
styles thickened, 1 mm.
light brown, 1 mm.
reddish, 1.3 mm.
Drymocallis fissa
Drymocallis micropetala
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.)
Drymocallis micropetala is poorly known; it combines the aspect and narrow inflorescence of D. convallaria, the small petals of D. glandulosa, and the predominantly short-hairy pedicels of D. deseretica. Plants with equally small petals that occur sporadically throughout the range of D. convallaria are predominantly septate-glandular rather than short-hairy on the petioles and are not included here. As circumscribed here, D. micropetala occurs only in the Wasatch Range of north-central Utah, from Juab to Rich counties; it is possibly of conservation concern.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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