Class
Order
Family
Genus
Classification
Nomenclature
Scientific Name:
Senecio dunedinensis Belcher, Ann. Missouri Bot. Gard. 43: 56 (1956)
Synonymy:
- = Erechtites diversifolius Petrie, Trans. & Proc. New Zealand Inst. 19: 324 (1887) – as diversifolia
- = Erechtites quadridentatus var. lanceolus Kirk, Stud. Fl. New Zealand 335 (1899) – as lanceola
Vernacular Name(s):
Fireweed
Description
Erect, annual or short-lived perennial herb. Mid cauline lvs usually almost glabrous on both surfaces when mature, sometimes sparsely white-lanate on upper surface and moderately white-lanate on lower, apetiolate, narrow-elliptic or narrowly elliptic-obovate to linear, usually remotely denticulate, rarely entire, usually revolute, not amplexicaul and without lobes at base, 40–100 × 3–9 mm. Uppermost lvs smaller, usually linear and often lanate, especially on lower surface. Supplementary bracts 3–5–(6), 1–2 mm long. Involucral bracts 12–13, glabrous to sparsely lanate, 4.5–5.5 mm long. Ray florets 0. Disc greenish yellow, 2–3 mm diam. Achenes subcylindric, narrowed to and slightly constricted below apex, usually with 2–3 rows of hairs mostly on the ribs, sometimes almost evenly hairy, c. 2.5 mm long.
[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]
Biostatus
Indigenous (Endemic)
Phenology
Flowering: Nov.–Feb.
Bibliography
Belcher, R.O. 1956: A Revision of the Genus Erechtites (Compositae) with Inquiries into Senecio and Arrhenechthites. Annals of the Missouri Botanical Garden 43: 1–85.
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [Naturally uncommon]
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76.
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. [Nationally Endangered]
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. [Nationally Vulnerable]
Kirk,T. 1899: The Students' Flora of New Zealand and the Outlying Islands. Government Printer, Wellington, N.Z.
Petrie, D. 1887 ("1886"): Descriptions of new Native Plants. Transactions and Proceedings of the New Zealand Institute 19: 323–324.
