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

Erigeron pallens Cronquist
pale fleabane; purple daisy
Asteraceae (Aster Family)

Introduction to Vascular Plants

© Lori Skulski  Email the photographer   (Photo ID #27003)

E-Flora BC Static Map
Distribution of Erigeron pallens
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Introduction

Erigeron purpuratus has recently been split, with Erigeron denali found in the northwest part of the province and Erigeron pallens in the southeast. True Erigeron purpuratus is now restricted to more northerly areas (Alaska, Yukon).

Note Author: Jamie Fenneman, University of British Columbia Herbarium

Species Information

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General:
Perennial herb from a diffuse, slenderly-branching stem-base; stems ascending, usually solitary, simple, finely glandular and more or less long-hairy, 1-10 cm tall.
Leaves:
Basal leaves oblanceolate to spoon-shaped, sparsely to moderately long-hairy, often more or less glabrous with maturity, sometimes obscurely glandular, 0.5-3 cm long, 1-5 mm wide, some of them 3-lobed at the tips, the lobing more common in S BC; stem leaves similar, few or lacking, greatly reduced.
Flowers:
Heads with ray and disk flowers, disks 6-15 mm wide; involucres 5-10 mm tall; involucral bracts glandular long-hairy, the multicellular hairs often with purplish crosswalls, subequal, with long-pointed tips, green, yellowish or purplish towards the tips; ray flowers 50-90, white, purplish or pinkish, 4-5 mm long, 0.5-0.9 mm wide; disk flowers 3.5-5 mm long.
Fruits:
Achenes 2-nerved, sparsely to moderately short-hairy; pappus simple or rarely double, the inner pappus of 25-40, white or sometimes reddish-purple tinted bristles, these equal to or surpassing the disk flowers by 1 mm, the outer pappus lacking or of inconspicuous scales.
Notes:
Douglas (1989, 1995) placed Erigeron pallens in synonymy under E. purpuratus Greene after examining large amounts of material from N BC and the YT. More recently, material from extreme N AK has been recognized as different from the more southern E. pallens and should be recognized as E. purpuratus (D.F. Murray, pers. comm.).

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry scree and talus slopes in the alpine zone; frequent throughout most of BC; N to AK, YT and NT and E to AB.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Erigeron pallens

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) 950 1757 2221
Slope Gradient (%) 0 22 58
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
22 197 255
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 2 7
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
9
Modal BEC Zone Class
ESSF
All BEC Zones (# of stations/zone) species was recorded in: BWBS(1), ESSF(8)

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 not evaluated, unknown or variable.

Synonyms and Alternate Names

Erigeron purpuratus subsp. pallens (Cronquist) G.W. Douglas, nom. nud.

Taxonomic and Nomenclatural Links

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General References