Fl. Pedem. 1: 61 (1785)
Annual hemiparasitic herbs. Leaves opposite, or alternate in upper parts, sessile. Flowers in terminal spike-like racemes, subtended by leaf-like bracts; bracteoles absent. Calyx tubular to broadly cup-shaped, 4-toothed; corolla 2-lipped, the upper lip hood-like, emarginate, the lower longer than the upper, 3-lobed; stamens 4, in pairs of unequal length, held in a U-shaped configuration under the hooded upper corolla-lip, anthers eglandular-hairy, with the 2 locules of each more or less equally awned at the base; stigma clavate to capitate. Capsule loculicidal; seeds numerous, smooth, longitudinally ribbed, or reticulate.
Currently 5 species are recognised, but more are likely to be transferred from Bartsia; from South America and the Mediterreanean. Three species naturalised in Australia.
A reassessment of generic boundaries in tribe Rhinantheae of the Orobanchaceae (Scheunert et al. 2012) provided evidence for the segregation of the larger genus Bartsia into several genera. This work is followed here.