Drymocallis micropetala

Rydberg in N. L. Britton et al.
in N. L. Britton et al., N. Amer. Fl. 22: 375. 1908.
Common names: Wasatch drymocallis or wood beauty
Synonyms: Drymocallis glandulosa subsp. micropetala (Rydberg) Soják Potentilla glandulosa subsp. micropetala (Rydberg) D. D. Keck P. glandulosa var. micropetala (Rydberg) S. L. Welsh & B. C. Johnston
Treatment appears in FNA Volume 9. Treatment on page 286. Mentioned on page 282.

Caudex branches short to elongate. Stems solitary or ± tufted, (2.5–)3–6 dm; base 2–4 mm diam., septate-glandular. Leaves 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. Inflorescences 10–20(–30)-flowered, leafy, congested clusters terminating branches, 1/10–1/3(–1/2) of stem, narrow, branch angles 5–20°. Pedicels 1–5 mm, predominantly short-hairy, often velutinous, sparsely to moderately septate-glandular. Flowers 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. Achenes reddish, 1.3 mm.

Phenology: Flowering May–Jul.
Habitat: Mountain brush in canyons, pinyon-juniper woodlands
Elevation: 1400–2600 m


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.

Selected References


Lower Taxa


... more about "Drymocallis micropetala"
Barbara Ertter +
Rydberg in N. L. Britton et al. +
Wasatch drymocallis or wood beauty +
1400–2600 m +
Mountain brush in canyons, pinyon-juniper woodlands +
Flowering May–Jul. +
in N. L. Britton et al., N. Amer. Fl. +
Drymocallis glandulosa subsp. micropetala +, Potentilla glandulosa subsp. micropetala +  and P. glandulosa var. micropetala +
Drymocallis micropetala +
Drymocallis +
species +