General: Perennial herb from a slender rhizome that is abruptly thick and tuber-like at tip; stems ascending to erect, 10-60 cm tall, simple or occasionally branched, finely to stiff-hairy, 4-angled.
Leaves: Opposite, elliptic to lanceolate, 2-8 cm long, 0.6-3 cm wide, gradually narrowed at tip and base, glabrous or minutely rough-hairy, margins coarsely and irregularly toothed; usually short-stalked; uppermost leaves not much reduced.
Flowers: Inflorescence of many head-like, axillary flower clusters; corollas tubular, 4-lobed, white or pinkish, 2.5-3.5 mm long, surpassing the calyces; calyx teeth 5, egg-shaped, soft, blunt to somewhat pointed at tips.
Fruits: Nutlets, 4 clustered together, 1-2 mm long, 0.8-1.2 mm wide, 3-angled, corky-thickened at edges, somewhat flat and finely toothed at the top.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2017. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
18/02/2019 2:42:42 AM
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