Asplenium veneticolor, a new spleenwort (Aspleniaceae, Pteridophyta) from Cuba

摘要

A new spleenwort from E Cuba is described and illustrated: Asplenium veneticolor. It is closely related to A. dentatum, a widespread species in Cuba. In nature it can be recognised by its distinctive bluish green (Venetian) colour, on dry material moreover by its fertile leaf blades being pinnatifid at apex, with oblong to oblanceolate pinnae. Stem scales, indusia and spores provide additional criteria that support the distinctness of the two taxa.