Drymocallis hansenii
Drymocallis arizonica
Hansen's cinquefoil, Hansen's drymocallis or wood beauty, Yosemite woodbeauty
Arizona 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 dm;
base 1.5–2.5 mm 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 to moderately hairy;
basal 5–22 cm, leaflet pairs (2–)3–4(–5);
terminal leaflet broadly obovate-elliptic, 1–5 × 1–2.5(–4) cm, teeth double, 6–18 per side, apex rounded to acute;
cauline 1–4, well developed, leaflet pairs 2–3.
10–20(–40)-flowered, not leafy, open, 1/4–2/3 of stem, narrow, branch angles 10–30°.
5–30-flowered, not notably leafy, compact, 1/10–1/4(–1/2) of stem, narrow, branch angles 5–25°.
2–8 (proximal to 20) mm, predominantly short-hairy, sparsely to moderately septate-glandular.
1–10 (proximal to 20) mm, sparsely to ± densely short-hairy, predominantly 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-lanceolate to narrowly elliptic, 2–4(–7) × 1–2 mm;
sepals spreading, 4–6(–11) mm, apex ± acute;
petals not or scarcely overlapping, spreading, cream-white, ± obovate, 3–6 × 2.5–5 mm, shorter than or equal to sepals;
filaments 1–3 mm, anthers 0.7–1 mm;
styles thickened, 1 mm.
light brown, 0.7–1 mm.
light brown, 1 mm.
= 14.
= 14.
Drymocallis hansenii
Drymocallis arizonica
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 arizonica encompasses populations in Arizona north of the Mogollon Rim and in Utah as far north as Garfield and Sevier counties, including the Henry Mountains. It is most distinctive in northern Arizona, where plants commonly have basal leaves with four pairs of lateral leaflets and compact inflorescences. The species intergrades with D. convallaria but is in general shorter and more likely multistemmed. It also shares similarities with D. pseudorupestris but has more developed cauline leaves and a more compact inflorescence. The intergrade zone between all three species and D. deseretica in southwestern Utah is particularly problematic and perhaps indicative of yet additional taxa deserving recognition.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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