Classification
 Nomenclature
Scientific Name:
Hydrocotyle microphylla A.Cunn., Ann. Nat. Hist. 2: 211 (1839)
 Description

Perennial, forming large patches; stems slender. Lvs simple, usually dark glossy green, usually glabrous, rarely sparsely hairy above or below, 5–10–(15) mm diam., divided to ⅕-⅓-(⅔) of radius into usually 5 segments; segments broadly oblong to obovate, each usually with 3 crenate teeth; teeth with blunt cartilaginous points; margins flat; petiole glabrous or with a few retrorse hairs near apex. Umbels simple, (2)–5–10–(12)-flowered; peduncles ± = lvs. Fls subsessile or shortly pedicellate. Fr. glabrous, 1.3–1.7 × 1 mm, acute on dorsal edge; ribs slightly raised and slender, or inconspicuous.

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

 Biostatus
Indigenous (Endemic)
 Phenology

Flowering: Dec.–Feb.; Fruiting: Jan.–Mar.

 Bibliography
Cunningham, A. 1839: Florae insularum Novae Zelandiae precursor; or a specimen of the botany of the islands of New Zealand. Annals of Natural History 2: 205–214.
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]