Perennial herb from a rhizome; stems erect, 20-70 cm tall, smooth.
Stem leaves 1 to 3, alternate, the basal and lower stem leaves stalked, 3- to 4-times 3-parted, the leaflets thick, circular to egg-shaped, 5-20 mm long, the tips 3- to 5-lobed, the lobes round-toothed, prominently veined and smooth or glandular-hairy below; stem leaves subtending panicle branches unstalked.
Inflorescence a many-flowered, narrow, terminal raceme, the bracts small, the flowers unisexual, male and female flowers on separate plants; flower stalks ascending; petals absent; sepals 4 (-6), greenish-white, lanceolate to broadly egg-shaped or elliptic, 2-4 mm long; stamens 10-20, the filaments coloured, not white, threadlike, 3-5.5 mm long, the anthers 2-3.5 mm long, blunt to pointy-tipped; stigmas usually yellowish.
Achenes, 5-17, erect to spreading, curved, elliptic-oblong, 3-4 mm long, round to slightly flattened, smooth to glandular, distinctly longitudinally veined, stalks 0.1-0.3 mm long; beaks 1.5-2.5 mm long.
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.
Illustration Source: The Illustrated Flora of British Columbia
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|AT(4), BAFA(1), BWBS(9), ESSF(48), ICH(11), IDF(6), MS(28), SBS(6)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Thalictrum confine Fern.
Thalictrum confine var. columbianum (Rydb.) B. Boivin
Thalictrum confine var. greeneanum Boivin
Thalictrum occidentale var. columbianum (Rydb.) M. Peck
Thalictrum turneri B. Boivin
Thalictrum venulosum var. confine (Fern.) Boivin
Thalictrum venulosum var. fissum (Greene) Boivin
Thalictrum venulosum var. lunellii (Greene) Boivin
Thalictrum venulosum var. turneri (Boivin) Boivin
Thalictrum venulosum var. venulosum