Beilis annua subsp. vandasii, (Velen.) D. A. Webb

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 111

(b) Subsp. vandasii (Velen.) D. A. Webb , Bot. Jour. Linn. Soc. 70: 18 (1975)

( B. vandasii Velen. ):

Leaves up to 50 x 20 mm; capitula 12-20 mm in diameter. Damp, shady places. C. Bulgaria (Stara Planina).

Variants with entire leaves, capitula 5-10 mm in diameter, and acute, usually hispid involucral bracts, have been distinguished as B. microcephala Lange , Vid. Meddel. Dansk Naturh. Foren. Kjobenhavn 1861: 66 (1861) ( B. annua subsp. microcephala (Lange) Nyman ). In S. & S.E. Spain they are fairly distinct, but elsewhere in S. Europe intermediates are found which show only one of these distinctive characters.

In the Islas Baléares plants occur whose ligules turn blue on drying. Such plants have been confused with B. caerulescens Cosson ex Ball , Jour. Linn. Soc. London (Bot.) 16: 495 (1878), a perennial species endemic to Morocco.