List of endemic plants of Tonga

Tonga is an archipelago and island nation in the South Pacific. It is home to 30 endemic species and subspecies of vascular plants. ^{[1] [2]}

Plants are listed alphabetically by plant family. Extinct and presumed extinct species are indicated with †.

Annonaceae

• Meiogyne amicorum (A.C.Sm.) B.Xue & R.M.K.Saunders

Arecaceae

• Pritchardia pacifica Seem. & H.Wendl. – Vava'u

Aspleniaceae

• Thelypteris macroptera (Copel.) C.F.Reed – 'Eua

Dennstaedtiaceae

• Dennstaedtia parksii Copel. ex Morton – Tongatapu and 'Eua

Goodeniaceae

• Scaevola porrecta A.C.Sm.

Lamiaceae

• Phyllostegia tongaensis H.St.John – 'Ata I.

Malvaceae

• Grewia amicorum Steud.
• Grewia populoides Burret

Meliaceae

• Aglaia heterotricha A.C.Sm. – 'Eua
• Didymocheton tongensis (A.C.Sm.) Holzmeyer & Hauenschild – 'Eua

Monimiaceae

• Hedycarya alternifolia Hemsl. – 'Eua

Orchidaceae

• Robiquetia tongaensis P.J.Cribb & Ormerod – Tongatapu and 'Eua

Pandanaceae

• Pandanus amicalis H.St.John
• Pandanus tongatapuensis H.St.John
• Pandanus vavauensis H.St.John

Phyllanthaceae

• Phyllanthus amicorum G.L.Webster

Pittosporaceae

• Pittosporum yunckeri A.C.Sm.

Plantaginaceae

• Plantago euana Hürl. – 'Eua

Podocarpaceae

• Podocarpus pallidus N.E.Gray – 'Eua, Vava'u

Rhamnaceae

• Alphitonia franguloides var. obtusa A.Gray

Rubiaceae

• Atractocarpus crosbyi (Burkill) Puttock – Vava'u
• Ixora yunckeri A.C.Sm. – 'Eua
• Oldenlandia debilis G.Forst.
• Psychotria euaensis M.Hotta
• Psychotria kaoensis A.C.Sm. – Kao

Salicaceae

• Casearia buelowii Whistler – Vava'u
• Xylosma smithiana Fosberg – Tongatabu

Sapindaceae

• Arytera bifoliata Whistler
• Guioa lentiscifolia Cav.

Selaginellaceae

• Selaginella yunckeri Alston – Kao

References

1. Endemic plants of Tonga, World Checklist of Vascular Plants (WCVP) checklist builder. Royal Botanic Gardens, Kew. Retrieved 21 February 2025.
2. Brummitt, R. K. (2001). World Geographical Scheme for Recording Plant Distributions (PDF) (2nd ed.). International Working Group on Taxonomic Databases For Plant Sciences (TDWG). Archived from the original (PDF) on 2016-01-25. Retrieved 18 February 2025.