E-Flora BC: Electronic Atlas of the Flora of British Columbia

Geum calthifolium Menzies ex Sm.
caltha-leaved avens (calthaleaf avens)
Rosaceae (Rose family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #7432)

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Distribution of Geum calthifolium
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Species Information

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Perennial herb from a branching rhizome and stout stem-base covered with reddish-brown-hairy scales; stems erect, 10-30 cm tall, yellowish-spreading-hairy.
Basal leaves long-stalked, 4-25 cm long, hairy along the veins below, simple or with a few tiny segments below the greatly enlarged terminal segment, the terminal segment kidney-shaped to circular, coarsely and irregularly toothed, 2-6 cm long, 3-10 cm wide, heart-shaped at the base, rounded at the tip; stem leaves unstalked, coarsely blunt-toothed and lobed.
Inflorescence of 1 to few, hairy-stalked, terminal flowers; corollas yellow, saucer-shaped, the petals 5, heart-shaped, notched at the tip, 8-12 mm; calyces densely hairy, 5-lobed, the lobes lanceolate, from 1/2 as long as to equalling the petals, alternating with lanceolate bractlets 2-6 mm long; ovaries superior; stamens numerous.
Achenes, numerous, erect, in clusters; achenes bristly-hairy, beaked with long (to 1.5 cm), straight, long-hairy style.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs, wet rocky slopes and meadows in the lowland to alpine zones; infrequent on the coastal islands and adjacent mainland; amphiberingian, N to AK; E Asia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Geum calthifolium

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 6 582 1530
Slope Gradient (%) 0 27 120
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 289 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 4 7
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: AT(1), CMA(12), CWH(24), MH(20)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is alpine tundra & boreal.

Synonyms and Alternate Names

Acomastylis calthifolia (Menzies ex Sm.) Bolle
Geum calthifolium subsp. calthifolium

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References