Trillium ovatum var. ovatum
western trillium
Melanthiaceae
(Previously in Liliaceae)

Introduction to Vascular Plants

Photograph

© Rod Innes     (Photo ID #6683)


Map

E-Flora BC Static Map

Distribution of Trillium ovatum var. ovatum
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from a short, stout, fleshy rhizome; flowering stems erect, 10-45 cm tall, unbranched, smooth throughout.
Leaves:
Stem leaves usually 3 in a whorl, 5-18 cm long, often as wide, broadly egg-diamond-shaped to triangular egg-shaped, smooth, unstalked or nearly so, the margins entire; basal leaves lacking.
Flowers:
Inflorescence a solitary, terminal, stalked flower, the stalk 1-8 cm long; flowers star-shaped, erect to nodding; petals 3, white turning pale pink to purple with age, sometimes pinkish initially, egg-shaped, 3-6 cm long; sepals 3, green and leaf-like, lanceolate to oblong, somewhat shorter than petals; stamens 6; pistil 1, 3-chambered.
Fruits:
Capsules, berry-like, green to yellowish, broadly egg-shaped, with wing-like ridges; seeds numerous, large, egg-shaped, in a sticky mass when first shed.
Notes:
Two varieties occur in BC:

1. Plants 20-45 cm tall; flowers opening white; the common variety........................ var. ovatum

1. Plants 10-20 cm tall; flowers opening pink; rare on western Vancouver Island..................... var. hibbersonii (Taylor & Szczawinski) Douglas & Pojar

SourceThe Illustrated Flora of British Columbia

Illustration

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.

Habitat and Range

Moist forests in the lowland, steppe and montane zones (var. ovatum), and mossy bluff ledges and river boulders in the lowland zone (var. hibbersonii); common in S BC, south of 50degreeN; E to SW AB and S to CO and CA.

SourceThe Illustrated Flora of British Columbia