STUDIES ON BEGONIA(BEGONIACEAE) OF THE MOLUCCA ISLANDS I: TWO NEW SPECIES FROM HALMAHERA, INDONESIA AND AN UPDATED DESCRIPTION OF BEGONIA HOLOSERICEA

Wisnu H Ardi (Centre for Plant Conservation – Bogor Botanic Gardens, LIPI)
Yayan W . C. Kusuma (Centre for Plant Conservation – Bogor Botanic Gardens (LIPI))
Carl L. Lewis (Fairchild Tropical Botanic Garden, 10901 Old Cutler Road, Miami, Florida)
Rosniati A. Risna (Centre for Plant Conservation – Bogor Botanic Gardens (LIPI))
Harry Wiriadinata (Herbarium Bogoriense, Botany Division, Research Center for Biology(LIPI))
Melissa E. Abdo (Department of Biological Sciences, Florida International University,Miami, Florida)
Daniel C. Thomas (Naturalis Biodiversity Center, Leiden, The Netherlands)

Reinwardtia
Vol 14, No 1 (2014): Vol. 14 No. 1

Two new species of Begonia, Begonia holosericeoides Ardi & D. C. Thomas and B. aketajawensis Ardi & D. C. Thomas, are described from Aketajawe Lolobata National Park, Halmahera, Indonesia. The two species belong to Begonia section Petermannia. Begonia  holosericea, previously only tentatively assigned to a section, is here assigned to section Petermannia based on the examination of newly available material. Additionally, a revised description and an illustration are provided. A key to the Moluccan species of Begonia is presented.