Scientific Name:
Gunnera tinctoria (Molina) Mirb. (1805)
Vernacular Name(s):
Chilean gunnera; Chilean rhubarb

Giant, clump-forming, gynomonoecious, summergreen herb, with short, stout, horizontal rhizomes. Winter resting buds massive, to c. 25 cm long; scales pinnatisect with pinkish laciniate lobes extending to the broad green midrib. Lvs to c. 2.5 m high, rhubarb-like. Petiole to 100 × 2.5–4.5 cm, studded with conic, short, often reddish, prickles. Lamina to c. 80 × 100 cm, suborbicular, palmately 5–7-lobed to nearly ⅓ radius, somewhat rugose and scabrid above; veins sparingly hairy beneath, prominently raised, the main veins with soft prickles. Infl. paniculate, to 1 m long at fruiting; main axis 3–4.5 cm diam.; infl. branches 4–7 cm × 5–7 mm in central part of panicle. Fls dense, sessile, apetalous; ♀ c. 1 mm long. Sepals minute. Styles slightly < ovary. Drupes 1.5–2 mm long, subglobose or broad-oblong, orange. Seed 1–1.3 mm diam., acutely angled.

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


Flowering: Oct.–Nov.

Biosecurity New Zealand 2012: Regional Pest Management Strategies Database.
Biosecurity New Zealand 4 Aug 2011: Unwanted Organisms Register.
Biosecurity New Zealand 2008: National Plant Pest Accord. MAF Biosecurity New Zealand, Wellington.
Howell, C. 2008: Consolidated list of environmental weeds in New Zealand. DOC Research & Development Series 292: 42.
Ministry for Primary Industries 23 Feb 2017: Unwanted Organisms Register. Version 02.01.02.
Shaw, J.M.H.; Edwards, D.; David, J. 2022: A new spontaneous hybrid in Gunnera subgenus Panke (Gunneraceae) widespread in the British Isles, with notes on the typification of G. manicata. British & Irish Botany 4(3): 364–384.