Lewis' Mock Orange - Philadelphus lewisii
MNPS Threat Rank
Shrub with exfoliating bark, 1–3 m. Twigs reddish, glabrous. Leaves opposite, short-petiolate, elliptic, the blades 2–6 cm long with mostly entire margins, glabrous to sparsely hairy. Inflorescence a several-flowered, terminal raceme on lateral branches. Flowers bisexual, regular, fragrant; calyx 4-lobed, forming a hypanthium; petals 4, separate, white, ovate, 1–2 cm long; stamens 20 to 40; stigmas 4; ovary partly inferior. Fruit an elliptic, capsule, 6–10 mm long, 4-loculed; seeds numerous (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
The following animal species have been reported as pollinators of this species or genera where their geographic ranges overlap: Bombus impatiens
(Colla and Dumesh 2010).