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This genus is accepted, and its native range is Tropics & Subtropics.
Trema (Cannabaceae)

[FZ]

Ulmaceae, C. M. Wilmot-Dear. Flora Zambesiaca 9:6. 1991

Morphology General Habit
Trees or shrubs, monoecious or dioecious, unarmed.
Morphology Leaves
Leaves alternate, penninerved, petiolate, unequal-sided at the base, serrate; stipules lateral, paired, free, caducous.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, cymose, often branched, usually congested, mainly male with female and bisexual flowers fewer and borne towards the apex.
Morphology Reproductive morphology Flowers Calyx
Sepals (4)5, shortly united at the base, induplicate-valvate in male buds, and imbricate in female buds.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary sessile, 1-locular; styles short, unbranched, divaricate or inrolled, persistent.
Morphology Reproductive morphology Fruits
Fruits small, endocarp hard.

[FTEA]

Ulmaceae, R. M. Polhill. Flora of Tropical East Africa. 1966

Morphology General Habit
Trees or shrubs, monoecious or dioecious, unarmed
Morphology Leaves
Leaf-blades penninerved, usually serrate, ± scabrous
Morphology Leaves Stipules
Stipules paired, lateral, free
Morphology Reproductive morphology Inflorescences
Inflorescences usually congested axillary cymes with ♂ and ♀ or hermaphrodite flowers
Morphology Reproductive morphology Flowers Calyx
Sepals (4–)5, shortly united, with ♂ buds induplicate-valvate and ♀ buds ± imbricate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens equal in number to the sepals
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary sessile, 1-locular; styles short, divaricate or inrolled, unbranched, ± persistent
Morphology Reproductive morphology Fruits
Drupes small, thinly fleshy; endocarp hard.

[FSOM]

M. Thulin. Flora of Somalia, Vol. 1–4 [updated 2008] https://plants.jstor.org/collection/FLOS

Distribution
10–15 species in the tropics and subtropics, only one in Africa.
Morphology General Habit
Trees or shrubs
Morphology Leaves
Leaves petiolate, finely serrate
Morphology Reproductive morphology Inflorescences
Inflorescences short axillary cymes with male, female or bisexual flowers
Morphology Reproductive morphology Flowers Calyx
Sepals (4–)5, shortly joined at the base, induplicate-valvate in male buds, imbricate in female buds
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens as many as the sepals
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary sessile, 1-celled, with short, simple styles
Morphology Reproductive morphology Fruits
Fruit a small drupe with hard endocarp.

Native to:

Andaman Is., Angola, Argentina Northeast, Assam, Bahamas, Bangladesh, Belize, Benin, Bermuda, Bismarck Archipelago, Bolivia, Borneo, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Burkina, Burundi, Cambodia, Cameroon, Cape Provinces, Caroline Is., Cayman Is., Central African Repu, Central American Pac, Chad, China South-Central, China Southeast, Christmas I., Colombia, Comoros, Congo, Cook Is., Costa Rica, Cuba, Djibouti, Dominican Republic, East Himalaya, Ecuador, El Salvador, Eritrea, Ethiopia, Fiji, Florida, French Guiana, Gabon, Gambia, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Haiti, Honduras, India, Ivory Coast, Jamaica, Jawa, Kazan-retto, Kenya, KwaZulu-Natal, Laos, Leeward Is., Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Mali, Maluku, Marianas, Marquesas, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mozambique, Myanmar, Namibia, Nepal, New Caledonia, New Guinea, New South Wales, Nicaragua, Nicobar Is., Nigeria, Niue, Northern Provinces, Northern Territory, Ogasawara-shoto, Oman, Pakistan, Panamá, Paraguay, Peru, Philippines, Puerto Rico, Queensland, Rwanda, Samoa, Santa Cruz Is., Saudi Arabia, Senegal, Seychelles, Sierra Leone, Society Is., Solomon Is., Somalia, South China Sea, Southwest Caribbean, Sri Lanka, Sudan, Sulawesi, Sumatera, Suriname, Swaziland, Taiwan, Tanzania, Thailand, Tibet, Togo, Tonga, Trinidad-Tobago, Tubuai Is., Turks-Caicos Is., Uganda, Vanuatu, Venezuela, Venezuelan Antilles, Vietnam, Wallis-Futuna Is., Western Australia, Windward Is., Yemen, Zambia, Zaïre, Zimbabwe

Introduced into:

Galápagos, Hawaii, Mauritius, Réunion

Trema Lour. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Wheatley, J.I. [760], Vanuatu 55201.000

First published in Fl. Cochinch.: 562 (1790)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Flora of West Tropical Africa

  • —F.T.A. 6, 2: 10.

Flora Zambesiaca

  • Fl. Cochinch.: 562 (1790).

Flora of Somalia

  • Flora Somalia, Vol 2, (1999) Author: by S. Fici [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Fl. Cochinch.: 562 (1790)

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Neotropikey
Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
http://creativecommons.org/licenses/by/3.0