Two new species of Begonia (Begoniaceae), Begonia gambutensis Ardi & D.C.Thomas and Begonia siregarii Ardi & D.C.Thomas, are described from material collected on the Indonesian island of Sulawesi. Both species belong to Begonia section Petermannia. A key to the species in the provinces North Sulawesi and Gorontalo is provided.
A new species of Begonia sect. Reichenheimea, B. bimaensis Undaharta & Ardaka, is described from Mt Muria in Bima District, Sumbawa Island, Indonesia. The species is a narrow endemic, currently known from only one population, and has been assessed as Vulnerable using IUCN criteria.
Improvement of leaf shape characters in Begonia can be done through hybridization between two different species of Begonia. This study aims to produce a new variety of Begonia to better improve the quantitative, qualitative characters and increase its genetic diversity. The study was conducted in the green house of Bogor Botanic Gardens. Two native species of Indonesia, Begonia sudjanae C.A Janson as the female parent and Begonia puspitae Ardi as the male parent. The mature F1 seeds were sown and selections were made among the plants produced. Observation results the characteristics of the new variety Begonia Crested as follows: stem type rhizomatous, leaves simple, ovate, peltate with strongly undulate base. Leaves margin is crenate and apex is acuminate. Colour on the upper surface are yellow green group RHS Colour Chart: (YG 144 A) strong yellow green, colour of veins on upper side is (YG 144 D) light yellow green. Inflorescence peduncle with 20 cm long branched symmetrically. The name Begonia Crested as the selected F1 plants are propagated in a vegetative method with leaves cutting, registered on the Center of Plant Variety Protection (PPVTPP) by No. 846/PVHP/2020. This new variety is beautiful and exotic leaves ornamental Begonia which will be developed as commercials ornamental plants.
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