Linaria verticillata Boiss., Voy. Bot. Midi Esp. 2: 462, tab. 132a (1839).
Perennial, leafy part of shoots glandular-pubescent below and usually also above, glandularpubescent in inflorescence; fertile stems numerous, 5-35 cm, decumbent to ascending, simple or branched; sterile stems numerous but scarcely distinct from fertile stems. Leaves of fertile stems (4-) 6-25 x 1.5-6 (-8) mm, oblong-elliptic to ovate, acute, attenuate, verticillate in whorls of 3-5 below, usually alternate above; leaves of sterile stems resembling those of fertile stems. Inflorescence with 1-5 (-9) flowers, dense in flower and fruit. Bracts 3-10 mm, lineareliptic to oblanceolate, subacute. Pedicels 0-5 mm in flower and fruit, erect. Calyx-lobes unequal, oblong to oblanceolate, obtuse; adaxial lobe 5-7 x 0.8-1.4 mm; abaxial lobes 2.5-5 x 0.8-2 mm. Corolla 15-35 mm, yellow, sometimes with violet or greenish veins; tube broad; adaxial lip sinus 3-4.5 mm; abaxial lip sinus 1.5-2.5 mm; spur 9-17 mm, stout, straight, subequalling to exceeding rest of corolla. Capsule 3.5-5.5 mm, globose, more or less glabrous. Seeds 1.6-3.2 mm, suborbicular, somewhat concavo-convex; hilum narrow; wing 0.3-0.6 mm broad, membranous, smooth, not papillate, somewhat irregular in outline, whitish-grey; disc reniform, smooth or sometimes tuberculate, not papillate, blackish-brown, the tubercles short, acute, grey; periclinal wall of testa-cells convex-tabular, smooth, the anticlinal walls of testacells sinuate with irregular ridge over junction. Modified from Sutton (1988).
S Spain. Hs.
Type: SPAIN: Granada; in rupibus umbrosis Sierra Nevada, 4000-7000 ft, vii 1837 Boissier s.n. (lecto. (Valdés, 1970a: 196-197) G-BOIS, isolecto. BM! K!).