A NEW SPECIES OF THE GENUS SIBBALDIA (ROSACEAE) FROM SOUTH EAST ASIA

During a world wide taxonomic revision of the genus Sibbaldia of the family Rosaceae, a new species Sibbaldia unguiculata sp. nova was discovered from South East Asia. This species is characterized by its moss-like habit, ternate leaves, which are equally tomentose on each surface, Inflorescence a congested compound dichasia, two opposite bracts. Distinctly clawed petals, which are hairy at the margin. A taxonomic key is provided to separate this species from the closely related species. Illustration of habit, with floral parts and a picture of holotypes is also given.