Drymocallis arizonica
Drymocallis glabrata
Arizona drymocallis or wood beauty
Idaho drymocallis, Idaho drymocallis or wood beauty
short.
short.
± tufted, (1.5–)2.5–6 dm;
base 1.5–2.5 mm diam., sparsely to densely septate-glandular.
± tufted, (2–)2.5–6(–8) dm;
base 2–3 mm diam., moderately to densely septate-glandular.
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.
glabrate or sparsely hairy (hairier at northern margin of range);
basal (8–)20–30 cm, leaflet pairs 2–4;
terminal leaflet ± obovate, 2–6(–7) × (1–)1.5–3 cm, teeth ± double, 5–25 per side, apex obtuse to acute;
cauline 0–2, well developed, leaflet pairs 1–3.
5–30-flowered, not notably leafy, compact, 1/10–1/4(–1/2) of stem, narrow, branch angles 5–25°.
(5–)10–30(–60)-flowered, leafy, open, 1/6–2/3 of stem, wide, branch angles (20–)30–60°.
1–10 (proximal to 20) mm, sparsely to ± densely short-hairy, predominantly septate-glandular.
5–40 (proximal to 45) mm, sparsely to moderately short-hairy, predominantly septate-glandular.
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.
opening widely;
epicalyx bractlets linear-oblanceolate, 2–6 × 0.5–1 mm;
sepals spreading, 4–7(–8) mm, apex usually acute, rarely obtuse;
petals ± overlapping, spreading, usually bright, sometimes pale, yellow, broadly obovate to round, 5–12 × (4–)5–11 mm, usually longer, rarely shorter, than sepals;
filaments 1.5–4 mm, anthers 0.7–1 mm;
styles thickened, 1 mm.
light brown, 1 mm.
brown to reddish, 1.2 mm.
= 14.
Drymocallis arizonica
Drymocallis glabrata
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.)
Drymocallis glabrata is the common member of the genus in central Idaho and adjacent parts of neighboring states, characterized by acute, glabrate leaves, leafy, widely branched inflorescences, relatively long pedicels with slender, septate glands, linear-oblanceolate epicalyx bractlets, and relatively large, bright yellow petals. Plants from northern Idaho, at the lower elevational extreme, tend to be hairier than those elsewhere in the species range. The species enters Utah in Cache and Weber counties; most other Utah populations placed by S. L. Welsh et al. (1993) in this taxon (as Potentilla glandulosa var. intermedia) are treated here as D. deseretica.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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