Classification
Class
Magnoliopsida Brongn.
Order
Myrtales Juss. ex Bercht. & J.Presl
Family
Onagraceae
Genus
Epilobium L.
 Nomenclature
Scientific Name:
Epilobium crassum Hook.f., Bot. Antarct. Voy. II (Fl. Nov.-Zel.) Part II, 328 (1855)
Synonymy:
  • = Epilobium antipodum Petrie, Trans. & Proc. Roy. Soc. New Zealand 46: 32 (1913 [1914])
Vernacular Name(s):
Thick-leaved willowherb
 Description

Robust, creeping, glabrous herb with stems to 10 cm long, occasionally branching and forming long, underground whitish rhizomes after flowering. Petioles winged. Lamina of lf oblanceolate to narrowly obovate, 1.2–4 × 0.5–1.4 cm. Floral tube 1.4–2.2 mm deep, glabrous. Petals white with pinkish veins, flushed pink after pollination, 5.1–7.5 × 2.7–5.2 mm. Capsule glabrous, 3.6–7.5 cm long; fruiting pedicel 3–8 cm long.

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

 Biostatus
Indigenous (Non-endemic)
 Phenology

Flowering: Dec.–Feb.

 Bibliography
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]
Hooker, J.D. 1854–1855: 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. II. Flora Novae-Zelandiae. Part II. Flowerless plants. Lovell Reeve, London.
Petrie, D. 1914 ("1913"): Descriptions of New Native Phanerogams. Transactions and Proceedings of the Royal Society of New Zealand 46: 32–39.
Raven, P.H.; Raven, T. E. 1976: The Genus Epilobium (Onagraceae) in Australasia: a Systematic and Evolutionary Study. New Zealand Department of Scientific and Industrial Research Bulletin 216: 1–321.