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

Holosteum umbellatum subsp. umbellatum L.
umbellate chickweed (jagged chickweed)
Caryophyllaceae (Pink family)

Introduction to Vascular Plants

© Reg Newman  Email the photographer   (Photo ID #12207)

E-Flora BC Static Map
Distribution of Holosteum umbellatum
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Species Information

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General:
Annual herb from a taproot; stems erect, 1-several, simple or basally branched, sticky above, glabrous below, stems 5-35 cm tall.
Leaves:
Leaves mainly in a basal rosette, lanceolate to oblong, 1-2 cm long, short-stalked, soon deciduous; stem leaves opposite, 2-3 pairs remote from the inflorescence, narrowly egg-shaped to oblong, 1-3.5 cm long, unstalked; stipules lacking.
Flowers:
Inflorescence of 2-16 flowers in a terminal umbel-like cluster with a tiny, bracted involucre; petals 5, oblanceolate, white or pale pink, raggedly-frilled, 5-7 mm long; sepals oblanceolate, distinct, 2.5-5 mm long.
Fruits:
Capsules egg-shaped to cylindric, 4-6 mm long, 6-valved, the tips of the valves recurved to tightly curled down; seeds prominently pimply-warty, the warts with interlocking starlike bases.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry disturbed areas in the lowland and steppe zones; infrequent in SC BC, rare in SW BC, known from the Saanich Peninsula and lower Fraser Valley; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Holosteum umbellatum

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) 350 514 810
Slope Gradient (%) 0 29 82
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
60 285 337
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 3 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
13
Modal BEC Zone Class
PP
All BEC Zones (# of stations/zone) species was recorded in: BG(5), ICH(1), PP(7)

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

Holosteum umbellatum subsp. umbellatum

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References