Linaria michauxii Chav., Monogr. Antzrrh.: 124, tab. 7 (1833).
Very glaucous perennial, glabrous, rootstock creeping, probably reproducing vegetatively from adventitious buds; fertile stems 1-8, 4.5-22 cm, decumbent to ascending, simple or branched from base, occasionally branched above; sterile stems rarely present, decumbent to ascending. Leaves of fertile stems (3-) 8-27 x (2.5-) 7-24 mm, the length 0.8-2 x breadth, obovate to orbicular, obtuse to subacute, flat, cuneate to semi-amplexicaul, somewhat fleshy, with 3-7 rather indistinct main veins, alternate, the lowermost sometimes scale-like. Inflorescence with 2-18 (-25) flowers, dense in flower and fruit. Bracts 5-14 mm, linear to elliptic, acute. Pedicels 1-3.5 mm in flower, 3-6 mm in fruit, erect. Calyx-lobes subequal, 6-8.5 x 2-2.7 in flower, 7.5-13 x 2.8 x 5 mm in fruit, narrowly oblong-oblanceolate to broadly elliptic, obtuse to subacute, the margins not scarious. Corolla (29-) 32-43 mm, reddish-purple or violet, the tube yellowish-white, the palate orange, deep yellow or purple; tube 6-9 mm broad at mouth; adaxial lip sinus 2.3-4 mm; abaxial lip sinus 1.4-1.8 mm; spur 17-24 mm, 3-4 mm broad at base, straight, considerably exceeding rest of corolla. Capsule 5.5-12 x 6-10 mm, subglobose, glabrous. Seeds 2.6-3 x 2-2.4 mm, reniform-orbicular, black, somewhat metallic-shiny; wing 0.4-0.7 mm broad, somewhat inflated towards margin; disc oblong-reniform, smooth. Modified from Sutton (1988).
n = 6; 2n = 12 (Aryavand, 1977: 444).
Type: IRAN: prope Ispahan [Isfahan] Michaux s.n. (holo.? P).