Linaria melampyroides Kuprian., Acta Inst. Bot. Acad. Sci. URSS ser. 1 9: 68 (1950).
Glabrous perennial; fertile stem usually solitary, 20-30 (-60) cm, ascending to erect, branched above; sterile stems not seen. Leaves 30-60 x 2.5-7 mm, the length 7-16 x breadth, linear to oblong-lanceolate, acute or acuminate, revolute, attenuate, 1-veined, subverticillate or alternate. Inflorescence with 5-12 flowers, dense in flower, dense to somewhat lax in fruit. Bracts 3-10 mm, linear-lanceolate, acute. Pedicels 3-8 mm in flower and fruit, erect. Calyx-lobes more or less equal, 2.8-3.5 x 1-1.5 mm, lanceolate, acute or subacute, the margins not scarious. Corolla 22-25 mm, brownish-yellow with orange-yellow palate, glabrous externally; tube 4.5-5 mm broad at mouth; adaxial lip sinus 3-4 mm; abaxial lip sinus 2-2.5 mm; spur 9-1 1 mm, 1.5-2.5 mm broad at base, straight, much shorter than rest of corolla. Capsule 5-8 x 3.5-6 mm, oblong-globose, glandular-puberulent towards apex. Seeds 1.6-1.9 mm, black, somewhat metallic-shiny; wing 0.4-0.6 mm broad; disc tuberculate to more or less smooth; tubercles hemispherical, low, rounded. Modified from Sutton (1988).
E Asia. Mo? Rs (Sd Se).
Type: USSR: Chita; Transbaicalia, in vicinitate urbis Czita, 1912 Sterjchov s.n. (holo. LE).