Linaria tarhunensis Pamp., Bull. Soc. Bot. Ital. 1914(1-3): 16 (1914).
Glaucous, fleshy annual, glabrous except for the sparsely glandular-pubescent inflorescence; fertile stems usually solitary, 6-15 cm, erect, simple or branched above; sterile stems usually absent. Leaves 5-15 (-25) x 1.7-3 (-6) mm, linear to oblong-ovate, subacute, flat, the lowermost in whorls of 3, alternate above. Inflorescence with 2-11 flowers, dense in flower, somewhat lax in fruit. Bracts 4-9 mm, linear to oblong, subacute. Pedicels 1-5 mm in flower and fruit, erect. Calyx-lobes subequal, 2.5-6 x 0.8-2.4 mm, narrowly obovate to oblong-spathulate, subacute. Corolla 25-30 mm, pale violet with yellow palate; tube somewhat broad; adaxial lip sinus 2-2.5 mm; lower lip sinus 1-1.2 mm; spur 13-18 mm, broad at the base, straight, exceeding rest of corolla. Capsule 3.5-4.5 mm, globose, glabrous. Seeds 1.6-2 mm, reniformorbicular or suborbicular, plano-convex, black; hilum broad; wing 0.25-0.5 mm broad, inflated, papillate; disc strongly reniform or somewhat hippocrepiform, papillate and tuberculate, the tubercles long, directed towards margin, acute; periclinal wall of testa-cells tabular, tabularconvex or papillate, verrucate to reticulate, the anticlinal walls of testa-cells angular with ridge over junction. Modified from Sutton (1988).
NW Libya. Li.
Type: LIBYA: Tripolitania; Tarhuna, Wadi Tersiva, pianura a SW di Ras Maader, xi 1913 Pampanini 2079 (lectotype, selected here FI!).