Drymocallis micropetala
Drymocallis hansenii
Wasatch drymocallis or wood beauty
Hansen's cinquefoil, Hansen's drymocallis or wood beauty, Yosemite woodbeauty
short to elongate.
short to elongate.
solitary or ± tufted, (2.5–)3–6 dm;
base 2–4 mm diam., septate-glandular.
usually solitary, sometimes loosely tufted, (3–)4–9 dm;
base (1–)2–4 mm diam., moderately to densely septate-glandular.
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.
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.
10–20(–30)-flowered, leafy, congested clusters terminating branches, 1/10–1/3(–1/2) of stem, narrow, branch angles 5–20°.
10–20(–40)-flowered, not leafy, open, 1/4–2/3 of stem, narrow, branch angles 10–30°.
1–5 mm, predominantly short-hairy, often velutinous, sparsely to moderately septate-glandular.
2–8 (proximal to 20) mm, predominantly short-hairy, sparsely to moderately septate-glandular.
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.
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.
reddish, 1.3 mm.
light brown, 0.7–1 mm.
= 14.
Drymocallis micropetala
Drymocallis hansenii
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.)
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.)
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