Geum calthifolium Menzies ex Sm.
caltha-leaved avens (calthaleaf avens)
Rosaceae (Rose family)
Introduction to Vascular Plants
caltha-leaved avens (calthaleaf avens)
Rosaceae (Rose family)
Introduction to Vascular Plants
Species Information
General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
Achenes, numerous, erect, in clusters; achenes bristly-hairy, beaked with long (to 1.5 cm), straight, long-hairy style.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
582 | 6 | 1530 |
| Slope
Gradient (%) |
27 | 0 | 120 |
|
Aspect (degrees) |
289 | 0 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 1 | 7 |
| Modal
Nutrient Regime
Class |
A | ||
| #
of field plots species was recorded in: |
57 | ||
| Modal
BEC Zone Class |
CWH | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(1), CMA(12), CWH(24), MH(20) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and 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.Status Information
Synonyms
Synonyms and Alternate Names:
Acomastylis calthifolia (Menzies ex Sm.) Bolle
Geum calthifolium subsp. calthifolium