Guioa

Guioa
	Guioa acutifolia, glossy tamarind, flowers and foliage, Kewarra Beach, Cairns, north-eastern Queensland, Australia
	Guioa semiglauca trunks in a stand at Foxground, Illawarra, New South Wales, Australia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Sapindaceae
Tribe:	Cupanieae
Genus:	Guioa; Cav.
Type species
	Guioa lentiscifolia; Cav.
Species
	See text

Guioa is a genus of about 78 rainforest tree species known to science, which constitute part of the plant family Sapindaceae.^[1]^[2] 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.^[2]^[3]^[4]

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^[1] and earlier scientific papers,^[5] the Australian Plant Name Index and Australian Plant Census,^[2] the Census of Vascular Plants of Papua New Guinea,^[3] Flora Malesiana,^[4] the Checklist of the vascular indigenous Flora of New Caledonia,^[6] Flora Vitiensis (Fiji),^[7] and the Flora of Tonga.^[8]

Guioa acuminata Radlk. – Philippines, New Guinea – Endangered^[9]
Guioa acutifolia Radlk., Glossy tamarind – New Guinea, Moluccas, Qld, Australia
Guioa amabilis Kanehira & Hatsusima – Vogelkop Peninsula, New Guinea
Guioa aryterifolia Radlk. – New Guinea
Guioa asquamosa Welzen – Flores, Timor – Vulnerable^[10]
Guioa bicolor Merr. – Philippines – Vulnerable^[11]
Guioa bijuga (Hiern) Radlk. – Thailand, Malay Peninsula, Borneo, Sumatra, Philippines
Guioa capillacea A.C.Sm – Fiji endemic
Guioa chrysea A.C.Sm – Fiji endemic
Guioa comesperma Radlk. – New Guinea incl. surrounding islands, Qld, Australia
Guioa contracta Radlk. – New Guinea
Guioa coriacea (Radlk.) Radlk. – Lord Howe Island endemic
Guioa crenata Radlk. – New Caledonia endemic
Guioa crenulata Radlk. – New Caledonia endemic
Guioa diplopetala (Hassk.) Radlk. – Burma, Thailand, Cambodia, Vietnam, Malay Peninsula, Borneo, Sumatra, Sulawesi, Java
Guioa discolor Radlk. – Philippines – Endangered^[12]
Guioa elliptica Welzen – New Guinea
Guioa eriantha Merr. & L.M.Perry – New Guinea
Guioa fusca Radlk. – New Caledonia endemic
Guioa glauca (Labill.) Radlk. – New Caledonia endemic
- var. glauca – New Caledonia endemic
- var. vulgaris Welzen – New Caledonia endemic
Guioa gracilis (Pancher & Sebert) Radlk. – New Caledonia endemic
Guioa grandifoliola Welzen – New Guinea – Critically endangered^[13]
Guioa hirsuta Welzen – Sulawesi
Guioa hospita Radlk. – New Guinea – Critically endangered^[14]
Guioa koelreuteriana (Blanco) Merr. – Borneo, Philippines, New Guinea
Guioa lasioneura Radlk. – Qld, Australia
Guioa lentiscifolia Cav. – Tonga endemic
Guioa malukuensis Welzen – Moluccas – Vulnerable^[15]
Guioa megacarpa Welzen – New Guinea
Guioa melanopoda Merr. & L.M.Perry – W. New Guinea – Vulnerable^[16]
Guioa membranifolia Radlk. – W. New Guinea, Moluccas
Guioa microsepala Radlk. – New Caledonia endemic
Guioa misimaensis Welzen – New Guinea
Guioa molliuscula Radlk. – New Guinea – Vulnerable^[17]
Guioa montana C.T.White – Qld, Australia
Guioa multijuga Welzen – W. New Guinea – Vulnerable^[18]
Guioa myriadenia Radlk. – Philippines – Endangered^[19]
Guioa normanbiensis Welzen – New Guinea – Vulnerable^[20]
Guioa novobritannica Welzen – New Guinea – Vulnerable^[21]
Guioa oligotricha Merr. & L.M.Perry – New Guinea – Vulnerable^[22]
Guioa ovalis Radlk. – New Caledonia
Guioa palawanica Welzen – Philippines – Critically endangered^[23]
Guioa parvifoliola Merr. – Philippines – Critically endangered^[24]
Guioa patentinervis Radlk. – Moluccas – Vulnerable^[25]
Guioa pauciflora Radlk. – New Guinea – Vulnerable^[26]
Guioa pectinata Radlk. – New Caledonia endemic
Guioa pleuropteris (Blume) Radlk. – Burma, Cambodia, Vietnam, Thailand, E. Malay Peninsula, Borneo, Sumatra, Philippines
Guioa plurinervis Radlk. – New Guinea – Vulnerable^[27]
Guioa pseudoamabilis Welzen – New Guinea
Guioa pteropoda Radlk. – New Guinea, Moluccas
Guioa pterorhachis Welzen – Borneo
Guioa pubescens (Zoll. & Mor.) Radlk. – W. Malaysia, Singapore, Borneo, Sumatra, Banka, W. Java, Philippines
Guioa reticulata Radlk. – Philippines – Critically endangered^[28]
Guioa rhoifolia (A. Gray) Radlk. – Fiji, Samoa
Guioa rigidiuscula Radlk. – New Guinea
Guioa sarcopterifructa Welzen – Qld, Australia
Guioa scalariformis Welzen – New Guinea – Vulnerable^[29]
Guioa semiglauca (F.Muell.) Radlk., Guioa – Qld & NSW, Australia
Guioa subsericea Radlk. – New Guinea
Guioa sufusana Welzen – New Guinea
Guioa truncata Radlk. – Philippines – Endangered^[30]
Guioa unguiculata Welzen – New Guinea – Vulnerable^[31]
Guioa venusta Radlk. – W. New Guinea – Vulnerable^[32]
Guioa villosa Radlk. – New Caledonia endemic
Guioa waigeoensis Welzen – W. New Guinea – Vulnerable^[33]

Formerly included here

Guioa dasyantha Radlk. ⇒ Cnesmocarpon dasyantha (Radlk.) Adema – New Guinea, Australia

References

^ ^a ^b ^c Welzen, Peter C. van (1989). Guioa Cav. (Sapindaceae): Taxonomy, Phylogeny, and Historical Biogeography. Leiden Botanical Series. Vol. 12. pp. 1–315. Retrieved 24 Aug 2015.
^ ^a ^b ^c ^d "Guioa%". Australian Plant Name Index (APNI), Integrated Botanical Information System (IBIS) database (listing by % wildcard matching of all taxa relevant to Australia). Centre for Plant Biodiversity Research, Australian Government. Retrieved 8 Dec 2013.
^ ^a ^b Conn, Barry J. (2008). "Guioa". Census of Vascular Plants of Papua New Guinea. (search result listing, matching all starting with "Guioa", via www.pngplants.org). Retrieved 7 Nov 2013.
^ ^a ^b Welzen, Peter C. van (1994). "Guioa". In Adema, F.; Leenhouts, P. W.; van Welzen, P. C. (eds.). Flora Malesiana. Series I, Spermatophyta : Flowering Plants. Vol. 11. Leiden, The Netherlands: Rijksherbarium / Hortus Botanicus, Leiden University. pp. 548–598. ISBN 90-71236-21-8. Retrieved 7 Nov 2013.
^ Welzen, Peter C. van (1988). "Nineteen new species and a new combination in Guioa Cav. (Sapindaceae)". Blumea. 33: 411–421.
^ Morat, P.; Jaffré, T.; Tronchet, F.; Munzinger, J.; Pillon, Y.; Veillon, J.-M.; Chalopin, M. (27 May 2014) [Dec 2012]. "The taxonomic database "Florical" and characteristics of the indigenous Flora of New Caledonia" (PDF). Adansonia. sér. 3. 34 (2): 177–219. Archived from the original (PDF) on 23 September 2015. Retrieved 8 Dec 2014.
^ Smith, Albert C. (1985). "Guioa Cav.". Flora Vitiensis nova: a new Flora of Fiji. Vol. 3. Lawai, Kauai, Hawaii: Pacific Tropical Botanical Garden. pp. 596–599. Retrieved 7 Nov 2013.
^ Yuncker, T. G. (July 1959). "Genus Guioa Cavanilles; Guioa lentiscifolia Cavanilles". Plants of Tonga. B. P. Bishop Museum Bulletin. Vol. 220. Honolulu, Hawaii: B. P. Bishop Museum. pp. 174–5. hdl:2027/coo.31924000609945. Retrieved 7 Nov 2013.
^ Energy Development Corporation; et al. (EDC) (2021). "Guioa acuminata". IUCN Red List of Threatened Species. 2021: e.T37350A153536002. doi:10.2305/IUCN.UK.2021-2.RLTS.T37350A153536002.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa asquamosa". IUCN Red List of Threatened Species. 1998: e.T37351A10046052. doi:10.2305/IUCN.UK.1998.RLTS.T37351A10046052.en. Retrieved 12 November 2021.
^ World Conservation Monitoring Centre (1998). "Guioa bicolor". IUCN Red List of Threatened Species. 1998: e.T37352A10046095. doi:10.2305/IUCN.UK.1998.RLTS.T37352A10046095.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa discolor". IUCN Red List of Threatened Species. 1998: e.T37353A10046135. doi:10.2305/IUCN.UK.1998.RLTS.T37353A10046135.en. Retrieved 12 November 2021.
^ Jimbo, T. (2021). "Guioa grandifoliola". IUCN Red List of Threatened Species. 2021: e.T37354A185827587. doi:10.2305/IUCN.UK.2021-1.RLTS.T37354A185827587.en. Retrieved 12 November 2021.
^ Jimbo, T. (2021). "Guioa hospita". IUCN Red List of Threatened Species. 2021: e.T37355A185827621. doi:10.2305/IUCN.UK.2021-1.RLTS.T37355A185827621.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa malukuensis". IUCN Red List of Threatened Species. 1998: e.T37358A10046332. doi:10.2305/IUCN.UK.1998.RLTS.T37358A10046332.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa melanopoda". IUCN Red List of Threatened Species. 1998: e.T37359A10046375. doi:10.2305/IUCN.UK.1998.RLTS.T37359A10046375.en. Retrieved 12 November 2021.
^ Jimbo, T. (2021). "Guioa molliuscula". IUCN Red List of Threatened Species. 2021: e.T37360A185827660. doi:10.2305/IUCN.UK.2021-1.RLTS.T37360A185827660.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa multijuga". IUCN Red List of Threatened Species. 1998: e.T37361A10042130. doi:10.2305/IUCN.UK.1998.RLTS.T37361A10042130.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa myriadenia". IUCN Red List of Threatened Species. 1998: e.T37362A10042213. doi:10.2305/IUCN.UK.1998.RLTS.T37362A10042213.en. Retrieved 12 November 2021.
^ Jimbo, T. (2021). "Guioa normanbiensis". IUCN Red List of Threatened Species. 2021: e.T37363A185827695. doi:10.2305/IUCN.UK.2021-1.RLTS.T37363A185827695.en. Retrieved 12 November 2021.
^ Jimbo, T. (2021). "Guioa novobritannica". IUCN Red List of Threatened Species. 2021: e.T37364A185827725. doi:10.2305/IUCN.UK.2021-1.RLTS.T37364A185827725.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa oligotricha". IUCN Red List of Threatened Species. 1998: e.T37366A10042557. doi:10.2305/IUCN.UK.1998.RLTS.T37366A10042557.en. Retrieved 12 November 2021.
^ Energy Development Corporation; et al. (EDC) (2021). "Guioa palawanica". IUCN Red List of Threatened Species. 2021: e.T37365A153536128. doi:10.2305/IUCN.UK.2021-2.RLTS.T37365A153536128.en. Retrieved 12 November 2021.
^ Energy Development Corporation; et al. (EDC) (2021). "Guioa parvifoliola". IUCN Red List of Threatened Species. 2021: e.T37367A153536162. doi:10.2305/IUCN.UK.2021-2.RLTS.T37367A153536162.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa patentinervis". IUCN Red List of Threatened Species. 1998: e.T37368A10046709. doi:10.2305/IUCN.UK.1998.RLTS.T37368A10046709.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa pauciflora". IUCN Red List of Threatened Species. 1998: e.T37369A10046754. doi:10.2305/IUCN.UK.1998.RLTS.T37369A10046754.en. Retrieved 12 November 2021.
^ Lamei, P.L. (2021). "Guioa plurinervis". IUCN Red List of Threatened Species. 2021: e.T37370A185827757. doi:10.2305/IUCN.UK.2021-1.RLTS.T37370A185827757.en. Retrieved 12 November 2021.
^ Energy Development Corporation; et al. (EDC) (2021). "Guioa reticulata". IUCN Red List of Threatened Species. 2021: e.T37371A153536194. doi:10.2305/IUCN.UK.2021-2.RLTS.T37371A153536194.en. Retrieved 12 November 2021.
^ Lamei, P.L. (2021). "Guioa scalariformis". IUCN Red List of Threatened Species. 2021: e.T37372A185827798. doi:10.2305/IUCN.UK.2021-1.RLTS.T37372A185827798.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa truncata". IUCN Red List of Threatened Species. 1998: e.T37373A10047149. doi:10.2305/IUCN.UK.1998.RLTS.T37373A10047149.en. Retrieved 12 November 2021.
^ Lamei, P.L. (2021). "Guioa unguiculata". IUCN Red List of Threatened Species. 2021: e.T37374A185827832. doi:10.2305/IUCN.UK.2021-1.RLTS.T37374A185827832.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa venusta". IUCN Red List of Threatened Species. 1998: e.T37375A10047227. doi:10.2305/IUCN.UK.1998.RLTS.T37375A10047227.en. Retrieved 12 November 2021.
^ van Welzen, P.C. (1998). "Guioa waigeoensis". IUCN Red List of Threatened Species. 1998: e.T37356A10046255. doi:10.2305/IUCN.UK.1998.RLTS.T37356A10046255.en. Retrieved 12 November 2021.

External links

"Guioa Cav". Atlas of Living Australia.
Media related to Guioa at Wikimedia Commons

[van-Welzen-1989-1] Welzen, Peter C. van (1989). Guioa Cav. (Sapindaceae): Taxonomy, Phylogeny, and Historical Biogeography. Leiden Botanical Series. Vol. 12. pp. 1–315. Retrieved 24 Aug 2015.

[APNI-2] "Guioa%". Australian Plant Name Index (APNI), Integrated Botanical Information System (IBIS) database (listing by % wildcard matching of all taxa relevant to Australia). Centre for Plant Biodiversity Research, Australian Government. Retrieved 8 Dec 2013.

[PNG-3] Conn, Barry J. (2008). "Guioa". Census of Vascular Plants of Papua New Guinea. (search result listing, matching all starting with "Guioa", via www.pngplants.org). Retrieved 7 Nov 2013.

[Fl.-Malesiana-1994-4] Welzen, Peter C. van (1994). "Guioa". In Adema, F.; Leenhouts, P. W.; van Welzen, P. C. (eds.). Flora Malesiana. Series I, Spermatophyta : Flowering Plants. Vol. 11. Leiden, The Netherlands: Rijksherbarium / Hortus Botanicus, Leiden University. pp. 548–598. ISBN 90-71236-21-8. Retrieved 7 Nov 2013.

[van-Welzen-1988-5] Welzen, Peter C. van (1988). "Nineteen new species and a new combination in Guioa Cav. (Sapindaceae)". Blumea. 33: 411–421.

[Morat-et-al.-New-Caledonia-Florical-6] Morat, P.; Jaffré, T.; Tronchet, F.; Munzinger, J.; Pillon, Y.; Veillon, J.-M.; Chalopin, M. (27 May 2014) [Dec 2012]. "The taxonomic database "Florical" and characteristics of the indigenous Flora of New Caledonia" (PDF). Adansonia. sér. 3. 34 (2): 177–219. Archived from the original (PDF) on 23 September 2015. Retrieved 8 Dec 2014.

[Smith-Flora-Vitiensis-nova-7] Smith, Albert C. (1985). "Guioa Cav.". Flora Vitiensis nova: a new Flora of Fiji. Vol. 3. Lawai, Kauai, Hawaii: Pacific Tropical Botanical Garden. pp. 596–599. Retrieved 7 Nov 2013.

[Yuncker-1959-Fl.-Tonga-8] Yuncker, T. G. (July 1959). "Genus Guioa Cavanilles; Guioa lentiscifolia Cavanilles". Plants of Tonga. B. P. Bishop Museum Bulletin. Vol. 220. Honolulu, Hawaii: B. P. Bishop Museum. pp. 174–5. hdl:2027/coo.31924000609945. Retrieved 7 Nov 2013.

[IUCN-1998-G.-acuminata-37350-9] Energy Development Corporation; et al. (EDC) (2021). "Guioa acuminata". IUCN Red List of Threatened Species. 2021: e.T37350A153536002. doi:10.2305/IUCN.UK.2021-2.RLTS.T37350A153536002.en. Retrieved 12 November 2021.

[IUCN-1998-G.-asquamosa-37351-10] van Welzen, P.C. (1998). "Guioa asquamosa". IUCN Red List of Threatened Species. 1998: e.T37351A10046052. doi:10.2305/IUCN.UK.1998.RLTS.T37351A10046052.en. Retrieved 12 November 2021.

[IUCN-1998-G.-bicolor-37352-11] World Conservation Monitoring Centre (1998). "Guioa bicolor". IUCN Red List of Threatened Species. 1998: e.T37352A10046095. doi:10.2305/IUCN.UK.1998.RLTS.T37352A10046095.en. Retrieved 12 November 2021.

[IUCN-1998-G.-discolor-37353-12] van Welzen, P.C. (1998). "Guioa discolor". IUCN Red List of Threatened Species. 1998: e.T37353A10046135. doi:10.2305/IUCN.UK.1998.RLTS.T37353A10046135.en. Retrieved 12 November 2021.

[IUCN-1998-G.-grandifoliola-37354-13] Jimbo, T. (2021). "Guioa grandifoliola". IUCN Red List of Threatened Species. 2021: e.T37354A185827587. doi:10.2305/IUCN.UK.2021-1.RLTS.T37354A185827587.en. Retrieved 12 November 2021.

[IUCN-1998-G.-hospita-37355-14] Jimbo, T. (2021). "Guioa hospita". IUCN Red List of Threatened Species. 2021: e.T37355A185827621. doi:10.2305/IUCN.UK.2021-1.RLTS.T37355A185827621.en. Retrieved 12 November 2021.

[IUCN-1998-G.-malukuensis-37358-15] van Welzen, P.C. (1998). "Guioa malukuensis". IUCN Red List of Threatened Species. 1998: e.T37358A10046332. doi:10.2305/IUCN.UK.1998.RLTS.T37358A10046332.en. Retrieved 12 November 2021.

[IUCN-1998-G.-melanopoda-37359-16] van Welzen, P.C. (1998). "Guioa melanopoda". IUCN Red List of Threatened Species. 1998: e.T37359A10046375. doi:10.2305/IUCN.UK.1998.RLTS.T37359A10046375.en. Retrieved 12 November 2021.

[IUCN-1998-G.-molliuscula-37360-17] Jimbo, T. (2021). "Guioa molliuscula". IUCN Red List of Threatened Species. 2021: e.T37360A185827660. doi:10.2305/IUCN.UK.2021-1.RLTS.T37360A185827660.en. Retrieved 12 November 2021.

[IUCN-1998-G.-multijuga-37361-18] van Welzen, P.C. (1998). "Guioa multijuga". IUCN Red List of Threatened Species. 1998: e.T37361A10042130. doi:10.2305/IUCN.UK.1998.RLTS.T37361A10042130.en. Retrieved 12 November 2021.

[IUCN-1998-G.-myriadenia-37362-19] van Welzen, P.C. (1998). "Guioa myriadenia". IUCN Red List of Threatened Species. 1998: e.T37362A10042213. doi:10.2305/IUCN.UK.1998.RLTS.T37362A10042213.en. Retrieved 12 November 2021.

[IUCN-1998-G.-normanbiensis-37363-20] Jimbo, T. (2021). "Guioa normanbiensis". IUCN Red List of Threatened Species. 2021: e.T37363A185827695. doi:10.2305/IUCN.UK.2021-1.RLTS.T37363A185827695.en. Retrieved 12 November 2021.

[IUCN-1998-G.-novobritannica-37364-21] Jimbo, T. (2021). "Guioa novobritannica". IUCN Red List of Threatened Species. 2021: e.T37364A185827725. doi:10.2305/IUCN.UK.2021-1.RLTS.T37364A185827725.en. Retrieved 12 November 2021.

[IUCN-1998-G.-oligotricha-37366-22] van Welzen, P.C. (1998). "Guioa oligotricha". IUCN Red List of Threatened Species. 1998: e.T37366A10042557. doi:10.2305/IUCN.UK.1998.RLTS.T37366A10042557.en. Retrieved 12 November 2021.

[IUCN-1998-G.-palawanica-37365-23] Energy Development Corporation; et al. (EDC) (2021). "Guioa palawanica". IUCN Red List of Threatened Species. 2021: e.T37365A153536128. doi:10.2305/IUCN.UK.2021-2.RLTS.T37365A153536128.en. Retrieved 12 November 2021.

[IUCN-1998-G.-parvifoliola-37367-24] Energy Development Corporation; et al. (EDC) (2021). "Guioa parvifoliola". IUCN Red List of Threatened Species. 2021: e.T37367A153536162. doi:10.2305/IUCN.UK.2021-2.RLTS.T37367A153536162.en. Retrieved 12 November 2021.

[IUCN-1998-G.-patentinervis-37368-25] van Welzen, P.C. (1998). "Guioa patentinervis". IUCN Red List of Threatened Species. 1998: e.T37368A10046709. doi:10.2305/IUCN.UK.1998.RLTS.T37368A10046709.en. Retrieved 12 November 2021.

[IUCN-1998-G.-pauciflora-37369-26] van Welzen, P.C. (1998). "Guioa pauciflora". IUCN Red List of Threatened Species. 1998: e.T37369A10046754. doi:10.2305/IUCN.UK.1998.RLTS.T37369A10046754.en. Retrieved 12 November 2021.

[IUCN-1998-G.-plurinervis-37370-27] Lamei, P.L. (2021). "Guioa plurinervis". IUCN Red List of Threatened Species. 2021: e.T37370A185827757. doi:10.2305/IUCN.UK.2021-1.RLTS.T37370A185827757.en. Retrieved 12 November 2021.

[IUCN-1998-G.-reticulata-37371-28] Energy Development Corporation; et al. (EDC) (2021). "Guioa reticulata". IUCN Red List of Threatened Species. 2021: e.T37371A153536194. doi:10.2305/IUCN.UK.2021-2.RLTS.T37371A153536194.en. Retrieved 12 November 2021.

[IUCN-1998-G.-scalariformis-37372-29] Lamei, P.L. (2021). "Guioa scalariformis". IUCN Red List of Threatened Species. 2021: e.T37372A185827798. doi:10.2305/IUCN.UK.2021-1.RLTS.T37372A185827798.en. Retrieved 12 November 2021.

[IUCN-1998-G.-truncata-37373-30] van Welzen, P.C. (1998). "Guioa truncata". IUCN Red List of Threatened Species. 1998: e.T37373A10047149. doi:10.2305/IUCN.UK.1998.RLTS.T37373A10047149.en. Retrieved 12 November 2021.

[IUCN-1998-G.-unguiculata-37374-31] Lamei, P.L. (2021). "Guioa unguiculata". IUCN Red List of Threatened Species. 2021: e.T37374A185827832. doi:10.2305/IUCN.UK.2021-1.RLTS.T37374A185827832.en. Retrieved 12 November 2021.

[IUCN-1998-G.-venusta-37375-32] van Welzen, P.C. (1998). "Guioa venusta". IUCN Red List of Threatened Species. 1998: e.T37375A10047227. doi:10.2305/IUCN.UK.1998.RLTS.T37375A10047227.en. Retrieved 12 November 2021.

[IUCN-1998-G.-waigeoensis-37356-33] van Welzen, P.C. (1998). "Guioa waigeoensis". IUCN Red List of Threatened Species. 1998: e.T37356A10046255. doi:10.2305/IUCN.UK.1998.RLTS.T37356A10046255.en. Retrieved 12 November 2021.

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