Linaria glacialis Boiss., Elenchus: 70 (1838).
Glaucous annual to perennial, glabrous except for glandular-pubescent inflorescence, procumbent to ascending; fertile stems 1-15, 5-20 cm, simple or somewhat branched above; sterile stems usually absent. Leaves 10-24 x 2-6 mm, elliptic to linear-oblanceolate, acute to obtuse, fiat, attenuate, mostly in whorls of 4. Inflorescence with 3-8 flowers, dense in flower and fruit. Bracts 12-20 mm, linear to linear-oblanceolate, acute or obtuse, resembling the leaves below. Pedicels 0-2.5 mm in flower, 3-7 mm in fruit, erect. Calyx-lobes unequal, linear to linearoblanceolate, acute to subacute; adaxial lobe 12-13 x 1.1-1.5 mm; abaxial lobes 8-10 x 0.8-1.2 mm. Corolla 20-27 mm, yellow, strongly tinged with violet, the spur with violet veins; tube broad; adaxial lip sinus 1.5-4 mm; abaxial lip sinus 0.4-0.6 mm; spur 8-15 mm, stout, curved, shorter than rest of corolla. Capsule 5-10 mm, globose, glabrous. Seeds 2.5-3.1 mm, suborbicular, concavo-convex or plano-convex, dark grey; hilum very narrow; wing 0.6-1 mm broad, membranous, smooth, not papillate; disc reniform, smooth, without tubercles or papillae; periclinal wall of testa-cells tabular, verrucate or somewhat reticulate, the anticlinal walls of testa-cells sinuate with ridge over junction. Modified from Sutton (1988).
S Spain (Sierra Nevada). Hs.
Type: SPAIN: Granada; in glareosis schistosis summis Sierra Nevada, 9000-10500 ft, viii 1837 Boissier s.n. (lecto. (Valdés, 1970a: 220) G-BOIS!, isolecto. K!).