Geum calthifolium
in A. Rees, Cycl. 16: Geum no. 13. 1810.
Plants subscapose. Stems 8–40 cm, sparsely hirsute proximally, puberulent throughout. Leaves: basal 5–25 cm, blade strongly lyrate-pinnate, sometimes simple, major leaflet 1, minor leaflets 1–7, terminal leaflet much larger than minor laterals; cauline 1.5–4.5 cm, stipules not evident, blade bractlike, not resembling basal, simple. Inflorescences 1–2(–4)-flowered. Pedicels downy, hirsute, eglandular. Flowers erect; epicalyx bractlets 2–6 mm; hypanthium green or green with slight maroon tinge; sepals erect-spreading, 6–11 mm; petals spreading, yellow, obcordate-obdeltate to nearly orbiculate, 9–13 mm, longer than sepals, apex broadly and shallowly emarginate. Fruiting tori sessile, glabrous. Fruiting styles wholly persistent, not geniculate-jointed, 9–14 mm, apex not hooked, pilose in basal 3/4, eglandular. 2n = 42.
Phenology: Flowering summer.
Habitat: Muskegs, moist meadows, heathlands, moist sites on rocky slopes, ledges, and cliffs
Elevation: 0–1500 m
Distribution
B.C., Alaska, e Asia (Russian Far East).
Discussion
Geum calthifolium hybridizes with G. rossii [= G. ×macranthum (Kearney ex Rydberg) B. Boivin]; see discussion under 4. G. schofieldii.
Selected References
None.