Geum macrophyllum var. perincisum Willd.
large-leaved avens
Rosaceae (Rose family)

Introduction to Vascular Plants

Photograph

© Alfred Cook     (Photo ID #11247)

Map

E-Flora BC Static Map

Distribution of Geum macrophyllum var. perincisum
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from a short rhizome and stout stem-base, stems erect, 30-100 cm tall, simple, 1 to several, coarse-spreading-hairy.
Leaves:
Basal leaves several, long-stalked, interruptedly pinnately cleft, 10-40 cm long, hairy along the veins beneath, with mostly 5 to 9 main segments, egg-shaped and blunt-toothed, interspersed with several much smaller segments, the terminal segment heart- to kidney-shaped, 3-10 cm long, 3-15 cm wide, many times larger than the several lateral leaflets below, coarsely blunt-toothed and often deeply 3-lobed, rounded or squared-off to heart-shaped at the base; stem leaves alternate, 2 to 5, smaller, unstalked or nearly so, deeply 3-lobed or 3-parted.
Flowers:
Inflorescence an open, bracted terminal cluster of several stalked flowers; corollas yellow, saucer-shaped, the petals 5, broadly egg-shaped, shallowly notched at the tip, 4-7 mm long, calyces 5-lobed, the lobes broadly triangular, bent back, 3-5 mm long, alternating with linear bractlets (sometimes lacking) about 2 mm long; ovaries superior; stamens numerous.
Fruits:
Achenes, numerous, spreading in globe-shaped clusters; achenes ellipsoid, flattened, about 3 mm long, short-hairy, beaked with the 3- to 6-mm long persistent style, which has an S-shaped kink near the tip and is glandular below the kink, hairy or smooth and tardily deciduous above it.
Notes:
Two subspecies occur in BC:

1. Terminal segment of basal leaves shallowly rounded-lobed and minutely toothed; flower-shoots and -stalks commonly without glands; plants from west of Coast-Cascade Mountains..................... ssp. macrophyllum

1. Terminal segment of basal leaves deeply lobed and coarsely toothed or incised; flower-shoots and -stalks commonly strongly glandular; plants from east of Coast-Cascade Mountains.......................... ssp. perincisum (Rydb.) Hult.

Source:  The Illustrated Flora of British Columbia

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.

Ecology

Ecological Framework for Geum macrophyllum var. perincisum

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)
 917 500 1620
Slope Gradient (%)
 2 0 12

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

 240 70 310
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		5 4 7
Modal Nutrient Regime
Class
 D
# of field plots
 species was recorded in:
 24
Modal BEC Zone Class
 SBS

All BEC Zones (# of stations/zone) species was recorded in

 BWBS(6), ESSF(4), ICH(3), IDF(1), SBS(10)

Habitat and Range

Moist meadows, fields, clearings, roadsides, streambanks and open forests in the lowland to montane zones; common throughout BC, except in driest parts of interior; amphiberingian, N to AK and NT, E to ON and S to MX; E Asia.

Source:  The Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Geum macrophyllum Willd.

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