Guioa

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.

At global, national and regional government scales, many Guioa species have been threatened with extinction, as officially recognised by the International Union for Conservation of Nature (IUCN) and by continental, national and local governments. Twenty five species, or more, have official IUCN global conservation statuses of either "critically endangered", "endangered" or "vulnerable" (to global extinction).

The Australian species are known to the logging industry as cedars, though they have no direct relationship with true cedars or the Australian members of the Meliaceae which are known as cedars.

Selected species
This incomplete listing was sourced from Peter C. van Welzen's 1989 revision of the genus and earlier scientific papers, the Australian Plant Name Index and Australian Plant Census, the Census of Vascular Plants of Papua New Guinea, Flora Malesiana, the Checklist of the vascular indigenous Flora of New Caledonia, Flora Vitiensis (Fiji), and the Flora of Tonga.


 * Guioa acuminata – Philippines, New Guinea  – [[Image:Blue globe icon.svg|14px|Globally]] Endangered
 * Guioa acutifolia, Glossy tamarind – New Guinea, Moluccas, Qld, Australia
 * Guioa amabilis – Vogelkop Peninsula, New Guinea
 * Guioa aryterifolia – New Guinea
 * Guioa asquamosa – Flores, Timor – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa bicolor – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa bijuga – Thailand, Malay Peninsula, Borneo, Sumatra, Philippines
 * Guioa capillacea – Fiji endemic
 * Guioa chrysea – Fiji endemic
 * Guioa comesperma – New Guinea incl. surrounding islands, Qld, Australia
 * Guioa contracta – New Guinea
 * Guioa coriacea – Lord Howe Island endemic
 * Guioa crenata – New Caledonia endemic
 * Guioa crenulata – New Caledonia endemic
 * Guioa diplopetala – Burma, Thailand, Cambodia, Vietnam, Malay Peninsula, Borneo, Sumatra, Sulawesi, Java
 * Guioa discolor – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Endangered
 * Guioa elliptica – New Guinea
 * Guioa eriantha – New Guinea
 * Guioa fusca – New Caledonia endemic
 * Guioa glauca – New Caledonia endemic
 * var. glauca – New Caledonia endemic
 * var. ''vulgaris – New Caledonia endemic
 * Guioa gracilis – New Caledonia endemic
 * Guioa grandifoliola – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Critically endangered
 * Guioa hirsuta – Sulawesi
 * Guioa hospita – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Critically endangered
 * Guioa koelreuteriana – Borneo, Philippines, New Guinea
 * Guioa lasioneura – Qld, Australia
 * Guioa lentiscifolia – Tonga endemic
 * Guioa malukuensis – Moluccas – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa megacarpa – New Guinea
 * Guioa melanopoda – W. New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa membranifolia – W. New Guinea, Moluccas
 * Guioa microsepala – New Caledonia endemic
 * Guioa misimaensis – New Guinea
 * Guioa molliuscula – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa montana – Qld, Australia
 * Guioa multijuga – W. New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa myriadenia – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Endangered
 * Guioa normanbiensis – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa novobritannica – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa oligotricha – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa ovalis – New Caledonia
 * Guioa palawanica – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Critically endangered
 * Guioa parvifoliola – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Critically endangered
 * Guioa patentinervis – Moluccas – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa pauciflora – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa pectinata – New Caledonia endemic
 * Guioa pleuropteris – Burma, Cambodia, Vietnam, Thailand, E. Malay Peninsula, Borneo, Sumatra, Philippines
 * Guioa plurinervis – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa pseudoamabilis – New Guinea
 * Guioa pteropoda – New Guinea, Moluccas
 * Guioa pterorhachis – Borneo
 * Guioa pubescens – W. Malaysia, Singapore, Borneo, Sumatra, Banka, W. Java, Philippines
 * Guioa reticulata – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Critically endangered
 * Guioa rhoifolia – Fiji, Samoa
 * Guioa rigidiuscula – New Guinea
 * Guioa sarcopterifructa – Qld, Australia
 * Guioa scalariformis – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa semiglauca, Guioa – Qld & NSW, Australia
 * Guioa subsericea – New Guinea
 * Guioa sufusana – New Guinea
 * Guioa truncata – Philippines – [[Image:Blue globe icon.svg|14px|Globally]] Endangered
 * Guioa unguiculata – New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa venusta – W. New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable
 * Guioa villosa – New Caledonia endemic
 * Guioa waigeoensis – W. New Guinea – [[Image:Blue globe icon.svg|14px|Globally]] Vulnerable


 * Formerly included here:
 * Guioa dasyantha   ⇒  Cnesmocarpon dasyantha  – New Guinea, Australia