摘要: Abstract Dombeya Cav. (Malvaceae) as presently defined encompasses over 200 species and considerable morphological variation. Within the 2- to 3-carpellate subg. Xeropetalum (Delile) K. Schum., almost half of recognized belong sect. Decastemon Planch., which is endemic Madagascar traditionally distinguished by its umbellate rather than cymose inflorescences. The most recent taxonomic treatment this section 47 numerous infraspecific taxa; an additional referable group was recently described. present recognizes 41 11 subspecies. Six (D. micrantha Appleq., D. milleri Appleq. & Bosser, pauciflora pilosissima T. Andriam., ratovosonii vohemarensis Appleq.) are newly described, one ramiovensis (Arenes) [≡ farafanganica Arenes subsp. Arenes]) elevated specific rank. parvipetala Arenes, (like pi...