Karyology, pollen and seed morphology, and distribution of eight endangered species in the Veneto region (Northern Italy)

Eight endangered species of the Veneto region were examined from the karyol ogical and micromorphological points of view. Their geographical distributi on, the exsiccata of Herbarium Venetum (HV-PAD) and conservation problems w ere also considered. These species are: Cortusa matthioli L., a taxon spora dically distributed in Veneto with 2n=24 chromosomes; Callianthemum kerneri anum Freyn ex Kerner, only known on Mt. Baldo (Verona) and with 2n=4x=32; S crophularia vernalis L. with 2n=28; Kosteletzkya pentacarpos (L.) Ledeb., a n entity with no regional conservation regulations and with 2n=34; Athamant a vestina A.Kerner, endemic to Italy and with 2n=22; Hottonia palustris L. with 2n=20 and in danger because of the destruction of its habitat; Sagitta ria sagittifolia L. with 2n=22; Trapa natans L., a protected species in Ven eto with 2n=36 and 2n=48.