Class
Order
Family
Genus
Classification
Nomenclature
Scientific Name:
Euchiton ruahinicus (D.G.Drury) Breitw. & J.M.Ward, New Zealand J. Bot. 36: 303 (1998)
Synonymy:
- ≡ Gnaphalium audax subsp. ruahinicum D.G.Drury, New Zealand J. Bot. 10: 140 (1972)
- ≡ Gnaphalium ruahinicum (D.G.Drury) C.J.Webb, New Zealand J. Bot. 25: 147 (1987)
Etymology:
Vernacular Name(s):
Creeping cudweed
Description
Stoloniferous perennial; stems 1-few, usually ascending, sometimes erect, simple, 3–15–(30) cm tall. Lvs basal and cauline at flowering; basal lvs short-petiolate, densely white-tomentose on lower surface sometimes including mid-vein, sparsely to moderately tomentose on upper, plane, narrow-obovate to oblanceolate, long-cuneate, acute, mucronate, (8)–30–50–(100) × 4–10–(13) mm; cauline lvs scarcely reduced upwards, often oblanceolate or oblong, apetiolate and cuneate or broad-based. Capitula 1.5–2 mm diam., 10-numerous, in dense ± globular terminal clusters only; longest subtending lvs 1–2× diam. of cluster. Involucral bracts oblong to narrowly obovate-oblong, obtuse, 3.5–4.5 mm long; stereome green, often tinged reddish purple toward apex; lamina mid to dark brown; gap and margins clear or tinged pale reddish purple. Achenes minutely papillate, c. 0.7 mm long.
[From: Webb et al. (1985) Flora of New Zealand. Volume 4 as Gnaphalium ruahinicum (D.G.Drury) C.J.Webb]
Biostatus
Indigenous (Endemic)
Bibliography
Connor, H.E.; Edgar, E. 1987: Name changes in the indigenous New Zealand flora, 1960–1986 and Nomina Nova IV, 1983–1986. New Zealand Journal of Botany 25: 115–170.
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]
Drury, D. G. 1972: The Cluster and Solitary-headed Cudweeds Native to New Zealand: (Gnaphalium Section Euchiton-Compositae). New Zealand Journal of Botany 10: 112–179.
Drury, D.G. 1970: A Fresh Approach to the Classification of the Genus Gnaphalium with Particular Reference to the Species Present in New Zealand (Inuleae-Compositae). New Zealand Journal of Botany 8: 222–248. [as Gnaphalium audax subsp. ruahinicum D.G.Drury]
Ward, J.M.; Breitwieser, I. 1998: New combinations in Euchiton (Compositae - Gnaphalieae) from New Zealand. New Zealand Journal of Botany 36(2): 303–304.
