The following species are recognised in the genus Begonia : [1]
Hydnocarpus is a genus of medium to large trees in the Family Achariaceae; the genus was previously placed in the now defunct family Flacourtiaceae. Species have been recorded from Indochina, Indonesia, Malaysia and the Philippines.
Tetrastigma is a genus of plants in the grape family, Vitaceae. The plants are lianas that climb with tendrils and have palmately compound leaves. Plants are dioecious, with separate male and female plants; female flowers are characterized by their four-lobed stigmas. The species are found in subtropical and tropical regions of Asia, Malaysia, and Australia, where they grow in primary rainforest, gallery forest and monsoon forest and moister woodland. Species of this genus are notable as being the sole hosts of parasitic plants in the family Rafflesiaceae, one of which, Rafflesia arnoldii, produces the largest single flower in the world. Tetrastigma is the donor species for horizontal gene transfer to Sapria and Rafflesia due to multiple gene theft events.
Dischidia is a genus of plants in the “dog-bane” family Apocynaceae, collectively known as the “milkweeds”. They are epiphytes, native to tropical areas of China, India as well as Bhutan’s southern borders, wherever minimal frost occurs. Additionally, they are known from most areas of Mainland Southeast Asia, including forested areas of Myanmar, Thailand, Vietnam, Cambodia, Laos, and some parts of Indonesia, Malaysia and Singapore. Several species are also native to Papua New Guinea and northeastern Australia.
Microtropis is a genus of plant in the family Celastraceae. There are about 70 species. They are trees and shrubs, evergreen or deciduous, with oppositely arranged leaves and white or yellowish flowers. Microtropis are distributed in Asia, Africa, and Central America.
Polyalthia is a genus of flowering plants in the family Annonaceae. There are approximately 90 species distributed from Africa to Asia and the Pacific.
Pseuderanthemum is a genus of plants in family Acanthaceae with a pantropical distribution.
Argostemma is a genus of flowering plants in the family Rubiaceae. It can be found in (sub)tropical Asia and western and west-central tropical Africa.
Blumea is a genus of flowering plants of the family Asteraceae.
Mussaenda is a genus of flowering plants in the family Rubiaceae. They are native to the African and Asian tropics and subtropics. Several species are cultivated as ornamental plants.
Paraboea are a genus of flowering plants in the African violet family Gesneriaceae, native to southern China, Assam, Indochina, and Malesia. They were recircumscribed from Boea in 2016.
Oxyspora is a genus of flowering plants belonging to the family Melastomataceae.
Sijfert Hendrik Koorders was a Dutch botanist, who worked primarily on the flora of Java.