Classification
 Nomenclature
Scientific Name:
Olearia arborescens (G.Forst.) Cockayne & Laing, Trans. & Proc. New Zealand Inst. 43: 367 (1911)
Vernacular Name(s):
Common tree daisy; Forest tree daisy; Glossy tree daisy
 Description

Shrub or tree up to 4 m. tall; branchlets angular. Lvs ± 4–8 × ± 2–4 cm. including petiole up to 2 cm. long, broad- to elliptic-ovate, acute, subcoriac.; glab. above when mature, clad in thin appressed satiny tomentum below; margins distantly sinuate-dentate to subentire. Corymbs large, effuse; pedicels slender, pubescent. Capitula up to 7 mm. long, 1·5 cm. diam.; phyll. imbricate, oblong-elliptic, obtuse to subacute, outer pilose on back, inner glab. except at tips and on margins. Florets 15–20; ray-florets 7–10 with a short broad ray. Achenes narrow-linear, c. 2 mm. long, compressed, pilose, striate; pappus-hairs up to 5 mm. long.

[From: Allan (1961) Flora of New Zealand. Volume 1.]

 Biostatus
Indigenous (Endemic)
 Phenology

Flowering: Oct.–Jan.; Fruiting: Dec.–Mar.

 Bibliography
Cockayne, L.; Laing, R. M. 1911 ("1910"): The Mount Arrowsmith district: A Study in Physiography and Plant Ecology. Part II: Plant Ecology. Transactions and Proceedings of the New Zealand Institute 43: 342–378.
de Lange, P.J.; Gosden, J.; Courtney, S.P.; Fergus, A.J.; Barkla, J.W.; Beadel, S.M.; Champion, P.D., Hindmarsh-Walls, R.; Makan, T.; Michel, P. 2024: Conservation status of vascular plants in Aotearoa New Zealand, 2023. New Zealand Threat Classification Series. No. 43. [Not threatened]
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]
Saldivia, P.; Nicol, D.A. 2025: Reinstatement, broader circumscription, and infrageneric classification of Shawia (Astereae, Celmisiinae), a large woody genus endemic to Australasia. Phytoneuron 2025-49: 1–43 (online). (Published online: 11 September 2025)