Revision of the Burseraceae of the Malaysian Area in a wider sense. Va. Haplolobus

This is a supplement to Husson & Lam’s revision of Haplolobus in Blumea 72, 1953, 413—458, which will be referred to in the present paper as: “Husson & Lam 1953”. There is one new species (H. mollis, from Halmaheira) and one new forma ( H. acuminatus, fa glabrior) and the area of the genus has possibly to be extended to include Palau. I would not be surprised at all if it would turn up in some of the Philippines Islands. Female flowers have been described for the first time of H. borneensis. Both in that species and in H. clementium the inflorescences have now been found to occasionally possess more or less abortive vegetative buds. This seems more and more a character of generic importance.