INTERMEDIACY BETWEEN GRINDELIA-CHILOENSIS AND HAPLOPAPPUS-PECTINATUS (ASTEREAE, ASTERACEAE)

Intermediate specimens between Grindelia chiloensis and Haplopappus pe ctinatus occur in Patagonia (Argentina). They were analysed using the methods proposed by Wells (distance diagram) and Wilson (character cou nt procedure). With both methods the hypothesis of hybridity is suppor ted. A close proximity of H. pectinatus to the genus Grindelia is also suggested by a high percentage of stainable pollen grains in the puta tive hybrids, chromosome morphology, and achene anatomy. Based on such evidence, the new combination G. anethifolia (H. pectinatus Phil., no n G. pectinata Baker) is proposed.