Guioa is a genus of about 78 rainforest tree species known to science, which constitute part of the plant family Sapindaceae. They have a wide distribution, ranging from throughout Malesia, in Burma, Cambodia, Vietnam, Thailand, Malay Peninsula, Borneo, Sumatra, Philippines, Java, Flores, Timor, Sulawesi, Moluccas, New Guinea, further southwards through the east coast of Queensland and New South Wales, Australia and further eastwards to the Pacific Islands, including Tonga, New Caledonia, Fiji and Samoa.
Archidendron forbesii is a species of legume in the family Fabaceae. It is found only in Papua New Guinea. It is threatened by habitat loss.
Adinandra angulata is a species of plant in the Pentaphylacaceae family. It is a tree endemic to Peninsular Malaysia.
Adinandra griffithii is a species of plant in the Pentaphylacaceae family.
Adinandra integerrima is a species of plant in the Pentaphylacaceae family. It is found in Malaysia and Singapore. It is threatened by habitat loss.
Adinandra parvifolia is a species of plant in the Pentaphylacaceae family. It is a tree endemic to Peninsular Malaysia. It is threatened by habitat loss.
Aglaia forbesii is a species of plant in the family Meliaceae. It is found in Brunei, Indonesia, Malaysia, Myanmar, and Thailand.
Helicia albiflora is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia amplifolia is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia calocoma is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia insularis is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia latifolia is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia neglecta is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia peekelii is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea.
Helicia peltata is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Helicia polyosmoides is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss. This taxon was described by Don Foreman in 1985.
Helicia rostrata is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea.
Helicia subcordata is a species of plant in the family Proteaceae. It is endemic to Papua New Guinea. It is threatened by habitat loss.
Pleomele forbesii is a species of flowering plant that is endemic to the island of Oʻahu in Hawaiʻi. It inhabits dry, coastal mesic and mixed mesic forests at elevations of 240–730 metres (790–2,400 ft). It is threatened by habitat loss.
Gonystylus forbesii is a tree in the family Thymelaeaceae.
