Additional punctate species of Pyramimonas, P-formosa, sp nov., and its impact on the subgenera Punctatae and Pyramimonas (Prasinophyceae, Chlorophyta)

A new punctate species of Pyramimonas Schmarda from South Africa is describ ed. This species is somewhat anomalous and, like P. chlorina Sym et Pienaar (subgenus Pyramimonas McFadden), has characters that bridge the divide bet ween the subgenera Pyramimonas and Punctatae McFadden, Features of these tw o species, together with the lack of exclusive character sets for either su bgenus derived from other species of these subgenera, lead to the conclusio n that Punctatae now should be subsumed formally into the subgenus Pyramimo nas.