Rhizomatous, mostly dioecious perennials with pubescent to glandular foliage. Stems numerous, trailing, branched, 5–40 cm long. Leaves mainly cauline, narrowly lanceolate to elliptic, 2–5 cm long. Inflorescence few- to many-flowered (solitary) in an open, glandular-hairy cyme. Flowers functionally unisexual but with rudiments of the non-functional sex present; calyx obscurely 10-veined, campanulate, 5–8 mm long; petals white, the blade 1–4 mm long, 2-lobed; styles 3. Capsule opening by 3 slits, ellipsoid, just longer than the calyx (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans
, Bombus pensylvanicus
, and Bombus impatiens
(Colla and Dumesh 2010).