Phrymaceae

Annual or perennial herbs, glabrous or hairy. Leaves opposite, simple with margins entire or toothed, gland-dotted or not. Inflorescence a raceme, axillary cymes or solitary in axils; bracts and bracteoles present or absent. Flowers zygomorphic or actinomorphic, bisexual, 5-merous; calyx tubular and 5-lobed or toothed, persistent in fruit, the tube winged or ribbed below teeth, rarely smooth; corolla tubular, equally 5-lobed or 2-lipped with an upper lip of 2 lobes and a lower lip of 3 lobes, the mouth often restricted by swellings (the palate); stamens epipetalous, 4 in pairs of unequal length, or 2; staminodes absent; anthers 1- or 2-locular, opening by longitudinal slits; ovary superior, 2-carpellate and 2- or rarely 1-locular, placentation axile or parietal, rarely basal, ovules 1-many per carpel; style terminal, with a 2-lobed, irritable stigma. Fruit an achene or loculicidal capsule included in enlarged calyx, or rarely a berry.