Geum aleppicum Jacq.
yellow avens
Rosaceae (Rose family)
Introduction to Vascular Plants
yellow avens
Rosaceae (Rose family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from a stout rhizome; stems erect, 30-100 cm tall, simple, 1 to several, tufted, coarse-hairy.
Leaves:
Basal leaves several, long-stalked, interruptedly pinnately cleft, 10-25 (40) cm long, hairy along the veins beneath, with 5 to 9 cleft and double-toothed segments, egg-shaped with a wedge-shaped base, and a few interspersed much smaller segments, the terminal segment cleft over half its length, a bit larger than the main lateral segments; stem leaves alternate, 3 to 5, short-stalked to unstalked, smaller and with fewer segments.
Flowers:
Inflorescence an open, bracted, terminal cluster of 3 to 10 stalked flowers; corollas yellow, wheel-shaped, the petals 5, egg-shaped, unnotched, 4-9 mm long; calyces 5-lobed, the lobes lanceolate, reflexed, nearly as long as the petals, alternating with narrowly lanceolate bractlets 1.5-3 mm long; ovaries superior; stamens numerous.
Fruits:
Achenes, numerous, spreading, in globe-shaped heads; achenes ellipsoid, flattened, 3-5 mm long, coarse-hairy above, beaked with the 5- to 6-mm-long persistent style, which has an S-shaped kink near the tip and is hairy on the ultimately deciduous segment above the kink.
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 aleppicum
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) |
1253 | 6 | 1984 |
| Slope
Gradient (%) |
20 | 0 | 101 |
|
Aspect (degrees) |
163 | 50 | 320 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
5 | 2 | 8 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
25 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
ESSF(8), ICH(4), IDF(1), MS(1), SBS(3), SWB(4) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist woods, thickets and meadows in the lowland and montane zones; frequent throughout BC east of the Coast-Cascade Mountains, rare on S Vancouver Island; circumboreal, E to NF and S to CA, NB and PA; Eurasia.Status Information
Synonyms
Synonyms and Alternate Names:
Geum aleppicum subsp. strictum (Aiton) R.T. Clausen
Geum aleppicum var. strictum (Aiton) Fernald
Geum strictum Aiton
Geum strictum var. decurrens (Rydb.) Kearney & Peebles