Description from Flora of China
Alectorolophus major (Ehrhart) Reichenbach; A. songaricus Sterneck; A. vernalis N. W. Zinger; Rhinanthus major Ehrhart (1791), not Linnaeus (1753); Rhinanthus songaricus (Sterneck) Fedtschenko; R. vernalis (N. W. Zinger) B. Schischkin & Sergievskaja.
Annuals, 15-60 cm tall. Stems erect, angular, pubescent along 4 lines, simple or branched; branches and leaves ascending almost vertically, close to main stems. Leaves sessile, linear to linear-lanceolate, 2-6 cm, as long as internodes, hispidulous, abaxially with hairs on spotlike processes, margin regularly deltoid-dentate with ascending teeth, callous thickened, short ciliate. Bracts wider than leaves, lower bracts with long and pointed teeth, upper ones short toothed. Pedicel ca. 2 mm. Calyx compressed, becoming inflated and subglobose in fruit, ca. 1 cm; lobes narrowly triangular. Corolla yellow, ca. 1.7 cm; lower lip appressed to galea. Capsule subglobose, strongly compressed, ca. 8 mm in diam., included in calyx. Seeds almost semiglobose, flattened, ca. 4.5 mm, wing ca. 1 mm broad. Fl. Jun-Aug.
Meadows; 1200-2400 m. Heilongjiang, Jilin, Liaoning, N Nei Mongol, N Xinjiang [Kazakhstan, Mongolia, Russia; Europe].