Resumen de Trifolium pallidum Waldst. & Kit., nuevo para la Península Ibérica

Benito Valdés Castrillón, Fernando González Bernáldez

• Trifolium baeticum Boiss. (1845, 726) has been considered by most authors to consist of plants dose to T. pratense but with a yellow or almost white corona.

  However, a study of the Andalusian plants of this group has demonstrated that it is possible to distinguish two taxa which are clearly separable on the basis of a number of correlated characters, viz. length and branching of the stem, size of the flower-heads, shape and size of the leaves, hairiness of stipules of the involucral leaves, length of the lower tooth of the calyx, size of the corolla, and abo ye all by the life-form (see figs. 1 & 2).

  One of diese taxa correspond to T. baeticum Boiss. (Fig. 3); the other has been identified as T. pallidum Waldst. & Kit. (Fig. 4), a species which has not hitherto been recognised in the Iberian peninsula. The distributions of both taxa are shown in fig. 5. One sample of T. pallidum collected in Sevilla has been found to have a diploid chromosome number of 2n =16, which is the same as that cited by PRITCH ARO (1969, 884) for this species.