Linaria aeruginea (Gouan) Cav., Elench. Pl. Horti Matrit.: 21 (1803).
Glaucous perennial or rarely annual, glabrous below or base of stems sometimes glandularpubescent, glandular-pubescent in inflorescence, often with reddish-violet multicellular hairs; fertile stems usually numerous, decumbent to suberect; sterile stems usually numerous. Leaves offertile stems 4-22 (-35) x 0.3-1.9 mm, linear to linear-elliptic, acute to subobtuse, usually revolute, attenuate, mostly alternate, the lowermost sometimes verticillate in whorls of 3-6; leaves of sterile stems similar to those of the fertile stems but smaller and mostly in whorls of 3-6. Inflorescence dense in flower, somewhat lax in fruit. Bracts linear, acute. Pedicels erect. Calyxlobes unequal, linear-lanceolate, acute to subobtuse. Corolla with broad tube; adaxial lip sinus 0.8-2 (-3) mm; abaxial lip sinus 0.7-1.2 mm; spur somewhat stout, curved, shorter than or subequalling rest of corolla. Capsule globose, glabrous or sparsely glandular-pubescent at apex. Seeds with hilum narrow; wing membranous, smooth, not papillate, whitish-grey or rarely yellowish-grey; disc reniform, not papillate, dark grey or blackish-grey; anticlinal walls of testacells somewhat angular or sinuate with ridge over junction. Modified from Sutton (1988).
Iberian peninsula. Bl Hs Lu.
Type: ‘Anti. aerugin.’ Gouan s.n. ex herb. Hooker. (lecto.! (Valdés, 1970a: 148, 151-152) K!).