Linaria oblongifolia (Boiss.) Boiss. & Reuter, Pugillus: 86 (1852).
Somewhat glaucous annual or rarely perennial, glabrous or very rarely glandular-puberulent towards base of stems, glabrous or glandular-pubescent with scattered reddish-violet, multicellular hairs in inflorescence; fertile stems usually numerous, 5-30 cm, decumbent to suberect, usually simple, usually leafless for (2-) 3-6 cm below inflorescence; sterile stems 0-5. Leaves of fertile stems 3-17 mm, acute, flat or somewhat revolute, attenuate, verticillate in whorls of 3-5 below, verticillate or alternate above; leaves of sterile stems similar but all verticillate. Inflorescence with (1-) 3-10 flowers, dense in flower, lax in fruit. Bracts 1-4 mm, linear-oblanceolate to linear, acute. Pedicels 0.5-2.5 mm in flower, erect. Calyx-lobes unequal or subequal, linear to oblanceolate, acute; adaxial lobe (3-) 4.5-6 x 0.3-0.8 mm; abaxial lobes (2.5-) 3-5 x 0.6--1.2 mm. Corolla yellow; tube somewhat narrow; adaxial lip sinus 1-2.5 mm; abaxial lip sinus 0.5-1 mm; spur slender, straight or somewhat curved, occasionally tinged with violet. Capsule 3-5 mm, globose, glabrous. Seeds 1.5-2.2 mm, orbicular, strongly concavo-convex; hilum narrow; wing 0.5-0.7 mm broad, membranous, smooth, not papillate, whitish-grey or rarely black towards disc; disc reniform-orbicular, smooth or sometimes tuberculate, not papillate, black and frequently metallic-shiny, the tubercles whitish-grey; periclinal wall of testa-cells convextabular, smooth or sparsely verruculate, the anticlinal walls of testa-cells sinuate with conspicuous ridge over junction. Modified from Sutton (1988).
S Spain, Portugal. Hs Lu.
Type: SPAIN: Málaga; (in regione montana circa) Antequera Prolongo s.n. (lecto. (Valdés, 1970a: 124, 126) G-BOIS!).