Hydrangeaceae

Mock Orange, Lewis' Mock Orange, Lewis' Mockorange, Wild Mockorange: Philadelphus lewisii (Synonyms: Philadelphus californicus, Philadelphus columbianus, Philadelphus gordonianus) - Erect, deciduous shrubs from 1.5-2.5 meters high. Leaves opposite, petiolate, elliptic to ovate in shape. Inflorescence of terminal racemes and solitary, axillary flowers. Calyx lobes and petals 4. Petals white, oblong, 10-20 mm long.

Common Whipplea, Modesty, Yerba de Selva, Whipplevine: Whipplea modesta - Trailing shrub, the main stem freely rooting. Leaves opposite, ovate or ovate-elliptic. Inflorescence consisting of congested panicles. Flowers white, 5-10 per cluster, calyx lobes and petals 5-6, the petals 3-4 mm long.