Onosma tricerosperma

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 : 91

7. O. tricerosperma Lag. , Gen. Sp. Nov. 10 (1816).

Perennial; flowering stems 20-40 cm, erect, much-branched, puberulent and patent-setose, the setae 2-4 mm. Lower leaves 60-150 x 4-15 mm, oblong-spathulate, patent-setose, puberulent. Inflorescence much-branched; pedicels up to 10 mm; bracts shorter than or about equalling calyx. Calyx 10-22 mm in flower, up to 32 mm in fruit. Corolla 16-23 mm, pale yellow, glabrous but minutely papillose, usually c. 1 | times as long as calyx. Nutlets 4-9 mm, rugose-tuberculate, usually with 3 horns. • C., S. & S.E. Spain. Hs.

1 Nutlets without horns (c) subsp. granatensis

1 Nutlets with 3 horns

2 Stem usually reddish-purple;nutlets7 -9mm (a) subsp. tricerosperma

2 Stem usually greenish-yellow; nutlets4 -7mm, (b) subsp. hispanica