Classification
Class
Magnoliopsida Brongn.
Order
Caryophyllales Juss. ex Bercht. & J.Presl
Family
Aizoaceae
Genus
Tetragonia L.
 Nomenclature
Scientific Name:
Tetragonia implexicoma (Miq.) Hook.f., Bot. Antarct. Voy. III. (Fl. Tasman.) Part I, 148 (1857)
Synonymy:
  • ≡ Tetragonella implexicoma Miq. in Lehmann, Pl. Preiss.1, (1845) – as amplexicoma
Type collection: ‘Crescit in clivalis arenosis insulae Rotenest, 19 Aug. 1839, Herb. Preiss. No. 2393.’ Lectotype (fide Green 1994 as possible holotype): Rottnest Island, W. Australia, 19 Aug. 1839, J.A.L. Preiss 2393, U0000159. Syntypes: J.A.L. Preiss 2393, GOET 005649, HBG 525958, FI 014715, MEL 99838, MEL 99780.
 Description

Trailing or lianoid herb or subshrub with terete branching softly woody stems up to ± 3 m. long. Lvs on flattened petioles up to 1 cm. long; lamina fleshy, papillose, (1)–2–3–(5) × 1–3 cm., obtuse, deltoid to broad- ovate to ovate-rhomboid, rather abruptly narrowed to petiole. Fls on slender peduncles ± 5 mm. long, solitary or occ. paired, occ. unisexual; per. yellow. Calyx tube subglobose; stamens 10–20; ovary 2–(3)- celled; styles 2–(3). Fr. 5–7 mm. diam., subglobose, succulent, bright to dark red, not horned; seeds 1–3.

[From:  Allan  (1961) Flora of New Zealand. Volume 1 as Tetragonia trigyna Banks & Sol. ex Hook.f.]

 Biostatus
Exotic
 Bibliography
de Lange, P.J.; Cameron, E.K. 1999: The vascular flora of Aorangi Island, Poor Knights Islands, northern New Zealand. New Zealand Journal of Botany 37: 433–468.
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Not Threatened]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Not Threatened]
Green, P.S. 1994: Aizoaceae. In: Wilson, A.J.G. (ed.) Flora of Australia. Vol. 49. Australian Government Publishing Service, Canberra. 76–79.
Heenan, P.B. 2022: Taxonomy with an absence of evidence results in unnecessary nomenclatural change: the case of Tetragonia trigyna Banks & Sol. ex Hook.f. (Aizoaceae) from New Zealand. New Zealand Journal of Botany 60(2): 169–138. (Published online: 2021)
Hooker, J.D. 1855–1857 ("1860"): The Botany of the Antarctic Voyage of H.M. Discovery Ships Erebus and Terror in the Years 1839–1843, under the command of Captain Sir James Clark Ross. III. Flora Tasmaniae. Vol. I. Dicoteledones. Lovell Reeve, London.
Lehmann, J.G.C. 1844–1845: Plantae Preissianae sive Enumeratio plantarum quas in Australasia occidentali et meridionali-occidentali annis 1838-1841; collegit Ludovicus Preiss. Partim ab aliis partim a se ipso determinatas descriptas illustratas edidit Christianus Lehmann. Vol. 1. Meissner, Hamburg.