Classification
Class
Magnoliopsida Brongn.
Order
Apiales Nakai
Family
Araliaceae
Genus
Hydrocotyle L.
 Nomenclature
Scientific Name:
Hydrocotyle hydrophila Petrie, Trans. New Zealand Inst. 29: 425 (1896)
Synonymy:
  • ≡ Hydrocotyle tripartita var. hydrophila (Petrie) Cheeseman, Man. New Zealand Fl. 195 (1906)
 Description

Usually glabrous perennial, forming small to large patches; stems slender. Lvs 3-foliolate; leaflets sessile, dull or shiny green, obovate-cuneate to suborbicular, 1–4–(5) mm long, entire or with 2–3 shallow crenate lobes; petiole usually glabrous, very rarely with a few retrorse hairs near blade. Umbels simple, 1–2-flowered; peduncles ± = or < lvs. Fls usually sessile, rarely shortly pedicellate. Fr. glabrous, 1.2–1.8 × 1–1.2 mm, ± rounded on dorsal edge; ribs obscure or slightly raised.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Indigenous (Endemic)
 Bibliography
Cheeseman, T.F. 1906: Manual of the New Zealand Flora. Government Printer, Wellington.
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]
Petrie, D. 1896: Descriptions of New Native Plants. Transactions of the New Zealand Institute 29: 425–426.
Webb, C.J.; Johnson, P. N. 1982: Hydrocotyle (Umbelliferae) in New Zealand: the 3-foliate species. New Zealand Journal of Botany 20: 163–168.