Drymocallis hansenii
Drymocallis deseretica
Hansen's cinquefoil, Hansen's drymocallis or wood beauty, Yosemite woodbeauty
Deseret drymocallis or wood beauty
short to elongate.
short.
usually solitary, sometimes loosely tufted, (3–)4–9 dm;
base (1–)2–4 mm diam., moderately to densely septate-glandular.
± tufted, (1.5–)2.5–6(–6.5) dm;
base 2–3(–4) diam., sparsely to densely septate-glandular.
sparsely to moderately hairy;
basal (7–)10–25(–30) cm, leaflet pairs 3–4;
terminal leaflet broadly obovate, 2–5(–6) × 1.5–3.5(–4) cm, teeth single or double, 6–11 per side, apex usually rounded, sometimes obtuse;
cauline 1–3, proximally well developed, leaflet pairs 2–4.
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.
10–20(–40)-flowered, not leafy, open, 1/4–2/3 of stem, narrow, branch angles 10–30°.
3–15(–20)-flowered, leafy, ± compact, (1/6–)1/5–1/3(–1/2) of stem, narrow, branch angles 10–20°.
2–8 (proximal to 20) mm, predominantly short-hairy, sparsely to moderately septate-glandular.
2–15 (proximal to 20) mm, predominantly short-hairy, often velutinous, not or sparsely to moderately septate-glandular.
opening widely;
epicalyx bractlets linear to narrowly elliptic, 2–4 × 0.5–1 mm;
sepals spreading, 5–8 mm, apex acute to acuminate;
petals overlapping or not, spreading, cream-white to pale yellow, broadly obovate, 4–6 × 3–6 mm, usually longer than, sometimes equal to, sepals;
filaments 1.5–2.5(–3) mm, anthers 0.8–1 mm;
styles thickened, 0.8–1.2 mm.
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.
light brown, 0.7–1 mm.
light brown, 1.2–1.5 mm.
= 14.
Drymocallis hansenii
Drymocallis deseretica
D. D. Keck (in J. Clausen et al. 1940) speculated that Drymocallis hansenii was the stabilized recombinant of D. glandulosa var. reflexa and D. lactea. Alternatively, it may represent the California counterpart of D. convallaria, because it tends to have tall, thick-based, single stems and narrow inflorescences. The species is centered in the west-central Sierra Nevada of California, usually occurring in moist meadows and equivalent habitats. Plants near Lake Tahoe, which provide the high-elevation extreme, combine the smaller stature of D. lactea and the glandular-septate stem bases of D. hansenii; their optimal taxonomic disposition is uncertain.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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