Species: Corispermum villosum Rydb.

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Corispermum villosum Rydb.

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TAXONOMY

Family:

Chenopodiaceae

Genus:

Corispermum

Synonyms of Corispermum villosum:

Corispermum emarginatum Rydb.
Corispermum hyssopifolium var. emarginatum (Rydb.) Boivin
Corispermum orientale var. emarginatum (Rydb.) J.F. Macbr.

Common Names:

hairy bugseed

DISTRIBUTION

Canada:

southern Alberta – northwestern and southern Saskatchewan – southern Manitoba – Quebec

Saskatchewan:

northwestern and southern Saskatchewan; Cadillac – Webb – Regina – Elbow – Lloydminster, Lake Athabasca

Ecoregion:

Mixed Grassland, Moist Mixed Grassland, Aspen Parkland, Athabasca Plain

HABITAT

Saskatchewan:

sandy prairie barrens, shores, sand dune blowouts, roadsides, sandy wastelands and old fields

Associated species:

Elymus canadensis, Psoralidium lanceolatum

RARITY STATUS

Provincial Status According
to Harms (2003):

Vulnerable

Nature Conservancy Status:

G4G5T4T5

Saskatchewan Species at
Risk Status:

None

COSEWIC Status:

None

Corispermum villosum is vulnerable in Saskatchewan because it is rare or uncommon and regionally restricted. No immediate threats are known, but may occur in the future.

SPECIES DESCRIPTION

Height:

10 – 30 cm

Roots:

taproot

Stem:

branched, occasionally simple, stellate-pubescent, may become glabrous, green to purplish or reddish in age

Leaves:

alternate, sessile, linear to oblanceolate, stellate-pubescent

Inflorescence:

raceme terminal or axillary, dense, covering stem completely; bracts wider than fruit, lower bracts leafy, oval to lance-shaped, upper bracts scarious margined

Flowers:

perfect; perianth segments 1, membranous, translucent

Fruits:

elliptic, style bases triangular, surface red spotted, may be white warted, yellowish to dark brown

CORISPERMUM KEY FOR SPECIES FOUND IN SASKATCHEWAN

1 Inflorescence not interrupted, dense, clavate; fruits wingless or with barely visible wing; style bases forming a triangular beak protruding over edge of fruit	C. villosum
1 Inflorescence interrupted, dense or lax, linear to ovate; fruits winged, if almost wingless, then fruits 3 – 5 mm long; style bases not forming a triangular beak	2

2 Inflorescence narrowly linear, lax, stem visible through inflorescence; fruit may be spotted and/or warty	C. americanum ssp. americanum
2 Inflorescence ovate, dense, stem not visible through inflorescence; fruit usually not spotted or warty	C. hookeri