Scientific Name:
Heracleum L., Sp. Pl. 249-250 (1753)

Biennial or perennial herbs, usually hairy and often rhizomatous, sometimes of great size.  Lvs 1–3-pinnate or ternate, or simple and digitately lobed; segments usually broad.  Umbels compound, pedunculate;  bracts and bracteoles present or 0, entire.  Petals white, greenish or pink, usually irregular; petals of inner fls entire and inflexed, those of outer fls often 2-lobed; calyx teeth minute.  Fr. ellipsoid to globose, strongly flattened dorsally, not beaked, spineless, but sometimes hairy;  commissure broad;  ribs 5 per mericarp, the dorsal slender, the lateral with a thickened wing;  lateral wings of opposing mericarps appressed;  vittae broad, club-shaped, solitary in furrows and < fr.

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

Number of species in New Zealand within Heracleum L.
Exotic: Fully Naturalised2
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.