Douglasia ochotensis

(Roemer & Schultes) Hultén

Ark. Bot., n. s. 7: 103. 1968 ,.

Common names: Alaska dwarf primrose
Basionym: Androsace ochotensis Roemer & Schultes in J. J. Roemer et al., Syst. Veg. 4: 786. 1819
Synonyms: Androsace arctica Chamisso & Schlechtendal Androsace tschuktschorum R. Knuth Primula arctica (Chamisso & Schlechtendal) Kuntze
Treatment appears in FNA Volume 8. Treatment on page 267. Mentioned on page 264, 266, 297.

Plants loosely cespitose cushions or mats with branched caudex. Stems prostrate, densely covered with marcescent, imbricate, reddish brown leaves proximally and terminal, green leaf rosettes. Leaves prominently recurved, thin; blade linear to lanceolate, 3–10 × 1–1.5 mm, margins entire, apex obtuse, hairy, hairs simple, surfaces glabrate to hairy, hairs simple. Scapes 5–10 mm, elongating little in fruit, glabrous or minutely glandular and hairy, hairs simple and forked. Inflorescences 1-flowered, ebracteate or, sometimes, bracteate; bract 1, linear-lanceolate, 0.5–1 × 0.5 mm, glabrous. Pedicels absent. Flowers: calyx 3–7 × 3–5 mm, glabrous; corolla pink, limb 4–12 mm diam., lobes 1–3 × 1–2 mm, margins entire. 2n = 38, 40.

Phenology: Flowering early summer.
Habitat: Rocky places on tundra, scree slopes
Elevation: 0-700 m


V8 547-distribution-map.gif

N.W.T., Yukon, Alaska, e Asia (Russian Far East).


Douglasia ochotensis is the only North American member of the genus to occur also in Asia; its range extends from the Sea of Okhotsk throughout the Bering Strait region, and across the Brooks Range to the Mackenzie River. It varies considerably with respect to flower size and degree of looseness in the growth habit; these characters are strongly affected by exposure, substrate stability, and moisture availability. Douglasia ochotensis can be easily distinguished from all other members of the genus by its prominent, imbricate, recurving, reddish brown, marcescent leaves.

Selected References


Lower Taxa

... more about "Douglasia ochotensis"
Sylvia Kelso +
(Roemer & Schultes) Hultén +
Androsace ochotensis +
Alaska dwarf primrose +
N.W.T. +, Yukon +, Alaska +  and e Asia (Russian Far East). +
0-700 m +
Rocky places on tundra, scree slopes +
Flowering early summer. +
Ark. Bot., n. s. +
Androsace arctica +, Androsace tschuktschorum +  and Primula arctica +
Douglasia ochotensis +
Douglasia +
species +