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

Nothocalais troximoides (A. Gray) Greene
false-agoseris (weevil prairie-dandelion)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #16370)

E-Flora BC Static Map
Distribution of Nothocalais troximoides
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Species Information

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Perennial herb from a thick woody base and taproot; stems erect, solitary to several, simple, glabrous or white long-hairy above, exuding milky juice when broken, 5-30 cm tall.
Basal leaves linear to linear-lanceolate, rarely over 1 cm wide, mostly 20-50 times as long as wide, rather stiff, pointed, the margins entire or distinctly wavy-margined, usually minutely fringed with small hairs; stem leaves usually lacking.
Heads with strap-shaped flowers, solitary at ends of branches; involucres bell-shaped to hemispheric, 14-30 mm tall; involucral bracts broadly or narrowly lanceolate, pointed, glabrous, or fringed with small hairs and white long-hairy along the midrib, usually dotted or lined with purple on the midrib, the outer bracts more than 3/4 as long as the inner ones; ray flowers yellow.
Achenes cylindric, pale brown, 8-13 mm; pappus silvery, somewhat unequal, each gradually widening upwards to a short terminal bristle, the scalelike portion about 0.5 mm wide near the base.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands and shrublands in the steppe zone; frequent in extreme SC BC; S to MT, UT, NV and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Nothocalais troximoides

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




Elevation (metres) 440 736 1320
Slope Gradient (%) 4 26 73
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
23 124 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 3 4
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BG(8), IDF(3), PP(10)


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 semiarid.

Synonyms and Alternate Names

Microseris troximoides A. Gray
Scorzonella troximoides (A. Gray) Jeps.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References