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

Packera pauciflora (Pursh) Á. Löve & D. Löve
rayless alpine butterweed
Asteraceae (Aster family)

Introduction to Vascular Plants

© Alfred Cook  Email the photographer   (Photo ID #8366)

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Distribution of Packera pauciflora
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Species Information

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General:
Perennial herb from a fibrous-rooted, simple or slightly branched woody stem-base; stems erect, solitary or several, simple or few-branched above, glabrous or nearly so, 10-50 cm tall.
Leaves:
Basal leaves thick, succulent, elliptic, egg-shaped or nearly round, stalked, 1.5-10 cm long including the stalk, 1-4 cm wide, glabrous to sparsely white woolly-hairy, toothed; stem leaves similar, lanceolate, variously toothed, cleft or lobed, progressively reduced upwards, becoming unstalked.
Flowers:
Heads discoid, solitary to several at the tips of stems or branches; involucres 6-10 mm tall; involucral bracts linear-lanceolate, reddish-purple throughout or at least above the middle, rarely green, glabrous or sparsely hairy; bracteoles few, purplish; discoid or rarely short and yellow; disk flowers orange or reddish.
Fruits:
Achenes oblong, nerved, glabrous; pappus of white hairlike bristles.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet to moist meadows in the subalpine and alpine zones; common throughout BC, lacking on the Queen Charlotte Islands; E to NF and S to WY and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Packera pauciflora

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) 71 1457 2390
Slope Gradient (%) 0 12 100
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
5 206 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 4 8
Modal Nutrient Regime
Class
D
Number of field plots
 species was recorded in:
226
Modal BEC Zone Class
ESSF
All BEC Zones (# of stations/zone) species was recorded in: AT(9), BAFA(8), BWBS(14), ESSF(73), ICH(14), IDF(10), IMA(3), MH(1), MS(35), SBPS(7), SBS(23), SWB(22)

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 montane boreal & cool temperate.

Synonyms and Alternate Names

Senecio discoideus (Hook.) Britton
Senecio pauciflorus Pursh

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References