Linaria glauca (L.) Chaz., Suppl. Dict. Jard. 2: 39 (1790).
Glaucous, glabrous, somewhat fleshy annual or perennial; fertile stems 1-14, 4-20 cm, decumbent or arcuate-ascending, simple or rarely branched; sterile stems usually absent. Leaves of fertile stems 4-14 mm, linear, subacute to obtuse, usually flat, in whorls of 3-4 below, alternate above. Inflorescence with 1-9 flowers, lax in flower and fruit. Bracts 1.5-3.5 mm, linear, acute to obtuse. Pedicels erect, 0-1 mm in flower, 0.5-3.5 mm in fruit. Calyx-lobes subequal, 2-3.5 x 0.4-0.7 mm, linear, subacute to obtuse. Corolla 9-13 mm, yellow with orange palate; tube 1.52.5 mm broad; adaxial lip sinus 0.5-1.2 mm; abaxial lip sinus 0.4-0.7 mm; spur 1-1.3 mm broad, slender, straight. Capsule 2.5-3.5 mm, globose, glabrous. Seeds 1.1-1.5 mm, reniformorbicular, plano-convex, black; hilum somewhat broad; wing 0.15-0.4 mm broad, somewhat thick, papillate; disc reniform, conspicuously papillate, without tubercles; periclinal wall of testa-cells tabular, tabular-convex or papillate, densely verrucate, the anticlinal walls of testacells somewhat sinuate with low, irregular ridge over junction. Modified from Sutton (1988).
C & E Spain. Hs.
Type: SPAIN: sine leg. (syn.? (cf. Valdés, 1970a: 173) S-255.9, microfiche!).
a. Linaria glauca subsp. glauca.
Annual; fertile stems 4-12 cm. Leaves of fertile stems 0.4-1.3 mm wide. Corolla with spur 3.54.5 mm, shorter than rest of corolla.
C Spain. Hs.
b. Linaria glauca subsp. olcadium Valdés & D.A. Webb in Heywood, Bot. Jour. Linn. Soc. 65(2): 265 (1972).
Perennial; fertile stems 10-20 cm. Leaves of fertile stems 0.2-0.6 mm wide. Corolla with spur 4.5-5 mm, more or less equalling rest of corolla.
SE Spain. Hs.
Type: SPAIN: Albacete; chalky waste ground subject to flooding, 10 km WSW Albacete, 1 vi 1967 Webb 288 (holo. TCD).