Linaria pinifolia (Poiret) Thell., Feddes Repert. 10(251-253): 291 (1912).
Glaucous perennial, more or less glabrous except for glandular-pubescent inflorescence and long, eglandular hairs on sterile stems; fertile stems usually numerous, 50-140 cm, erect, usually branched above; sterile stems usually numerous. Leaves of fertile stems (8-) 20-50 x 0.3-1 mm, filiform or linear, subacute to obtuse, attenuate, canaliculate, lowermost 4- to 6-verticillate, mostly alternate above; leaves of sterile stems similar to those of fertile stems, alternate or irregularly verticillate. Inflorescence many-flowered, dense in flower and fruit. Bracts 2.5-8 mm, linear-lanceolate, acute. Pedicels 1.5-3.5 mm in flower and fruit, erect, free. Calyx-lobes subequal, 3.5-5 x 0.8-1 mm, linear-lanceolate, acute, the margin scarious, white or tinged with reddish-purple. Corolla 11-20 mm, yellow, deep reddish-purple or yellow tinged or veined with red; tube 3-4.5 mm broad; adaxial lip sinus 1.4-1.8 (-2) mm; abaxial lip sinus 0.50.7 mm; spur 5-10 mm, 0.8-1.8 mm broad at base, straight or somewhat arcuate, more or less equalling rest of corolla. Style deeply bifid. Capsule 3-5 x 3-4 mm, ovoid, emarginate, glabrous; loculi subequal or somewhat unequal, each loculus dehiscing by 3-5 valves. Seeds 0.6-0.7 mm, reniform or reniform-tetrahedral, strongly transversely ridged, blackish-grey; transverse ridges 5-8, rounded, discrete or rarely anastomosed; periclinal wall of testa-cells verrucate or rugulate, the margin scarcely raised except for marginal papilla towards ridge-apex, the median papilla often present, small, rounded, more or less isodiametric. Modified from Sutton (1988).
CN Africa. Ag Tn.
Type: ALGERIA: "Barbarie" (not located).