Guioa Explained

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 –  Endangered
• Guioa acutifolia, Glossy tamarind – New Guinea, Moluccas, Qld, Australia
• Guioa amabilis – Vogelkop Peninsula, New Guinea
• Guioa aryterifolia – New Guinea
• Guioa asquamosa – Flores, Timor –  Vulnerable
• Guioa bicolor – Philippines –  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 –  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 –  Critically endangered
• Guioa hirsuta – Sulawesi
• Guioa hospita – New Guinea –  Critically endangered
• Guioa koelreuteriana – Borneo, Philippines, New Guinea
• Guioa lasioneura – Qld, Australia
• Guioa lentiscifolia – Tonga endemic
• Guioa malukuensis – Moluccas –  Vulnerable
• Guioa megacarpa – New Guinea
• Guioa melanopoda – W. New Guinea –  Vulnerable
• Guioa membranifolia – W. New Guinea, Moluccas
• Guioa microsepala – New Caledonia endemic
• Guioa misimaensis – New Guinea
• Guioa molliuscula – New Guinea –  Vulnerable
• Guioa montana – Qld, Australia
• Guioa multijuga – W. New Guinea –  Vulnerable
• Guioa myriadenia – Philippines –  Endangered
• Guioa normanbiensis – New Guinea –  Vulnerable
• Guioa novobritannica – New Guinea –  Vulnerable
• Guioa oligotricha – New Guinea –  Vulnerable
• Guioa ovalis – New Caledonia
• Guioa palawanica – Philippines –  Critically endangered
• Guioa parvifoliola – Philippines –  Critically endangered
• Guioa patentinervis – Moluccas –  Vulnerable
• Guioa pauciflora – New Guinea –  Vulnerable
• Guioa pectinata – New Caledonia endemic
• Guioa pleuropteris – Burma, Cambodia, Vietnam, Thailand, E. Malay Peninsula, Borneo, Sumatra, Philippines
• Guioa plurinervis – New Guinea –  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 –  Critically endangered
• Guioa rhoifolia – Fiji, Samoa
• Guioa rigidiuscula – New Guinea
• Guioa sarcopterifructa – Qld, Australia
• Guioa scalariformis – New Guinea –  Vulnerable
• Guioa semiglauca, Guioa – Qld & NSW, Australia
• Guioa subsericea – New Guinea
• Guioa sufusana – New Guinea
• Guioa truncata – Philippines –  Endangered
• Guioa unguiculata – New Guinea –  Vulnerable
• Guioa venusta – W. New Guinea –  Vulnerable
• Guioa villosa – New Caledonia endemic
• Guioa waigeoensis – W. New Guinea –  Vulnerable

Formerly included here:

• Guioa dasyantha   ⇒  Cnesmocarpon dasyantha – New Guinea, Australia

External links

• Web site: Guioa Cav. . Atlas of Living Australia .