Article

Fem material collected during an excursion in May 1992 has been critically investigated, with emphasis on the asplenioid and cheilanthoid taxa. In Cheilanthes, the existence in Greece of C. guanchica, C. maderensis, C. acrostica, and the hybrids C. xmarchettiana and C. xmalacitensis was confirrned, all five growing together in the same locality, an andesite ridge on the island of Poros, the protection of which is recommended to Greek conservationists. Cosentinia vellea is reported as new for Poros, and Notholaena marantae, as new for the Peloponnesus. A cytological study of Anogramma leptophylla, Asplenium obovatum, A. trichomanes subsp. inexpectans, Cheilanthes guanchica, C. xmarchettiana, and C. xmalacitensis confirmed earlier chromosome data for these taxa, based on non-Greek material.