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

Eriophyllum lanatum (Pursh) Forbes
Common Woolly Sunflower (woolly eriophyllum)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #15827)

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Distribution of Eriophyllum lanatum
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SUBTAXA PRESENT IN BC
Eriophyllum lanatum var. leucophyllum

Species Information

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General:
Perennial herb from a fibrous root; stems woolly, few- to much- branched from the base, 10-60 cm tall.
Leaves:
Basal leaves few, soon deciduous; stem leaves alternate to opposite, entire to narrowly lobed, 1-8 cm long.
Flowers:
Heads with ray and disk flowers, solitary on long stems; ray flowers 8-13, yellow, 1-2 cm long; involucres 9-12 mm tall; involucral bracts firm, erect, embracing the ray achenes.
Fruits:
Achenes slender, 4-angled, glabrous to hairy; pappus of 6-12 translucent scales, or a toothed crown.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry meadows and rocky slopes from the lowland to the montane zones; common on Vancouver Island and the adjacent mainland, rare in SC and SE BC; S to MT, WY, UT and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Eriophyllum lanatum

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) 55 189 382
Slope Gradient (%) 0 39 210
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W] 		19 164 330
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		0 1 7
Modal Nutrient Regime
Class		 C
Number of field plots
 species was recorded in:		 69
Modal BEC Zone Class
 CWH
All BEC Zones (# of stations/zone) species was recorded in: CDF(6), CWH(10), IDF(1)

Ecological Indicator Information

A very shade-intolerant, submontane to montane, Western North American forb distributed equally in the Pacific and Cordilleran regions. Occurs in cool temperate and cool mesothermal climates on excessively dry to very dry, nitrogen-medium soils. Its occurrence increases with increasing precipitation and elevation. Grows in non-forested, grassy communities very shallow, on water-shedding sites; often inhabits disturbed sites. Characteristic of moisture-deficient sites.

Source:  Indicator Plants of Coastal British Columbia (Information applies to coastal locations only)

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.

Taxonomic and Nomenclatural Links

Flora North America treatment for Asteraceae
 Flora North America treatment for Eriophyllum lanatum
Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

UBC Herbarium Scanned Collection Record
 Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-12-07 7:24:56 PM ]
Disclaimer: The information contained in the E-Flora atlas pages is derived from expert sources as cited in each section. This information is scientifically based. E-Flora also acts as a portal to other sites via deep links. As always, users should refer to the original sources for complete information. E-Flora BC is not responsible for the accuracy or completeness of the original information.
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