Aceratium is a genus of about 20 species of plants from the family Elaeocarpaceae native to eastern Malesia, Papuasia and Queensland. They are commonly known as carabeens.
Description Plants in this genus are shrubs or small trees (some are large trees) with opposite leaves. Stipules are either absent or minute, and petioles are short. Inflorescences are racemose or somewhat umbellate. The flowers are , have distinct petals and sepals, and are usually pentamerous. The fruits are drupes.
Distribution One species occurs from Maluku through New Guinea to Vanuatu, one is endemic to the Philippines, five are endemic to Queensland, and the balance occur throughout New Guinea and the Bismarck Archipelago.
Species , the following 20 species are accepted by Plants of the World Online. Aceratium archboldianum – New Guinea Aceratium brassii – New Guinea Aceratium calomala – Philippines Aceratium concinnum – Queensland Aceratium dasyphyllum – Maluku (Kai Islands) Aceratium doggrellii – Queensland Aceratium ferrugineum – Queensland Aceratium hypoleucum – New Guinea Aceratium ledermannii – New Guinea, Bismarck Archipelago Aceratium megalospermum – Queensland Aceratium muellerianum – New Guinea Aceratium oppositifolium – Maluku Islands through New Guinea to Vanuatu Aceratium pachypetalum – north west New Guinea Aceratium parvifolium – New Guinea Aceratium pittosporoides – New Guinea Aceratium sericeum – New Guinea Aceratium sericoleopsis – Queensland Aceratium sinuatum – Papua New Guinea Aceratium sphaerocarpum – New Guinea Aceratium tomentosum – north east New Guinea
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