Linaria saxatilis (L.) Chaz., Suppl. Dict. Jard. 2: 39 (1790).
Perennial or rarely annual, subglabrous to densely glandular-pubescent below, glandularpubescent in inflorescence; fertile stems usually numerous, 7-35 (-50) cm, decumbent to erect, simple or branched above; sterile stems 0-15. Leaves of fertile stems 4-20 (-25) x 0.7-4 (-7) mm, linear to oblong-elliptic, acute to subacute, flat, in whorls of 3-5 at the base, alternate above; leaves of sterile stems like those of fertile stems but more crowded and in whorls of 3-5. Inflorescence with 2-10 (-25) flowers, dense in flower, dense or scarcely elongating in fruit. Pedicels 0.5-3 mm in flower and fruit, erect. Bracts 2.5-8 mm, linear, acute. Calyx-lobes subequal, 3-4.5 x 0.5-1.5 mm, linear-oblong, acute. Corolla 9-18 mm, yellow; tube slender; adaxial lip sinus 1-1.5 mm; abaxial lip sinus 0.5-1 mm; spur 5-8 mm, slender, straight, shorter than rest of corolla. Capsule 2.5-4.5 mm, oblong-ovoid, glandular-puberulent. Seeds 0.8-1.8 mm, suborbicular to reniform, concavo-convex to plano-convex, dark brown to black; hilum narrow; wing 0.05-0.2 mm broad, usually thin, papillate at least towards disc; disc reniform, tuberculate and papillate, the tubercles short and rounded; periclinal wall of testa-cells tabularconvex, verrucate, the anticlinal walls of testa-cells angular with ridge over junction. Modified from Sutton (1988).
2n = 12 (Heitz, 1926: 646; 1927a: 51; East, 1933: 327; Valdés, 1970b; Fernandes, Queirós and Santos, 1977: 48).
N & C Iberian peninsula. Hs Lu.
Type: "saxatile" (lecto. (Valdés, 1970a: 249, 252) LINN-767