Chaenorhinum rubrifolium, Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 226

9. C. rubrifolium (Robill. & Cast , ex DC.) Fourr., Ann. Soc. Linn. Lyon nov. ser., 17: 127 (1869)

( Linaria rubrifolia Robill. & Cast , ex DC.).

Annual; stems up to 20(-40) cm. Leaves up to 20(-40) x 9(—15) mm, ovate to obovate, the lowest red beneath and usually forming a basal rosette, the upper smaller and green on both surfaces. Pedicels up to 16(-25)mm in fruit, erectopatent. Calyx 4-7 mm; lobes linear-spathulate, 1-1-5 mm wide. Lips of corolla more or less approximated; spur conical, acute, usually shorter than tube. Seeds 0-4-0-5 mm. Dry places. Mediterranean region, mainly in the west. BI Ga G r Hs It Sa Si. 1 Corolla (13—)15—20 mm, yellow, tinged with violet on the tube; capsule 4-6 mm (c) subsp. raveyi

1 Corolla usually less than 15 mm, blue, violet or lilac, with yellow palate; capsule 2-5—4-5 mm

2 Corolla usually less than 13 mm; seeds with rather prominent ribs (a) subsp. rubrifolium

2 Corolla at least 13 mm; seeds with low ribs (b) subsp. formenterae