Stellaria obtusa Engelm.
blunt-sepaled starwort (Rocky Mountain chickweed)
Caryophyllaceae (Pink family)

Introduction to Vascular Plants


© Ryan Batten     (Photo ID #66786)


E-Flora BC Static Map

Distribution of Stellaria obtusa
Click here to view the full interactive map and legend

Species Information

Perennial herb from a slender rhizome; stems prostrate to ascending, several, branched, matted, glabrous, 3-20 cm tall/long.
Basal leaves lacking; stem leaves opposite, egg-shaped, abruptly sharp-pointed, 5-12 mm long, 2.5-8.0 mm wide, glabrous except for a few long basal, marginal hairs, unstalked or the lower ones short-stalked; stipules lacking.
Inflorescence of solitary flowers in the leaf axils; petals lacking; sepals 4 or 5, egg-shaped to elliptic, 2-3 mm long, very slightly or not at all papery on the margins, more or less obtuse.
Capsules globose-egg-shaped, 2-4 mm long, 6-valved; seeds 0.6-0.7 mm long, dark brown, finely though distinctly cross-wrinkled with undulate ridges.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Stellaria obtusa

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)
1577 525 2257
Slope Gradient (%)
13 3 30

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

22 0 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 2 6
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

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

AT(4), IDF(2)

Habitat and Range

Wet to moist meadows and streambanks in the montane zone; rare E of the Coast-Cascade Mountains in S BC; N to S AK, E to AB and S to CO and CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Alsine obtusa (Engelm.) Rose
Alsine viridula Piper
Alsine washingtoniana (B.L. Rob.) A. Heller
Stellaria viridula (Piper) H. St. John
Stellaria washingtoniana B.L. Rob.