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

Geum aleppicum Jacq.
yellow avens
Rosaceae (Rose family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #72652)

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Distribution of Geum aleppicum
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Species Information

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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.

Source: The Illustrated Flora of British Columbia

Habitat / 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.

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)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 6 1253 1984
Slope Gradient (%) 0 20 101
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
50 163 320
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 5 8
Modal Nutrient Regime
Class
C
Number 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)

Climate

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 cool temperate & cool mesothermal.

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

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References