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Classification
Nomenclature
Scientific Name:
Olearia bullata H.D.Wilson & Garn.-Jones, New Zealand J. Bot. 30: 365-366 (1992)
Synonymy:
- ≡ Olearia virgata var. rugosa G.Simpson, Trans. Roy. Soc. New Zealand 75: 199 (1945)
- = Olearia virgata var. β Hook.f., Handb. New Zealand Fl. 128 (1864)
Description
Shrub up to c. 2 m tall. Bark light fawn, becoming moderately rough and furrowed on old branches and trunk. Branchlets diverging at a wide angle, slender, fawn-brown to orange-brown or dark brown, quadrangular, glabrous; internodes of long shoots (2-)3(-3.5) cm long. Short shoots opposite and decussate, each bearing up to about 12 leaves and/ or 1-3 capitula when young; older short shoots leafless, rough with closely ranked leaf scars. Leaves opposite or in opposite fascicles, linear-oblanceolate to narrowly oblanceolate, c. 8-12 × 1-2 mm; upper surface of lamina mid-green, somewhat shiny, with abundant fine appressed hairs when young, glabrescent with age, markedly bullate; margins strongly revolute almost to midrib at least when young, opening a little when mature to reveal lower surface clad in dense silvery white tomentum; midrib deeply sunken above, prominently raised throughout length beneath, greenish or brownish, hairy; apex obtuse, with a small brown to red-brown apiculus often nestled in a tuft of white hairs; base of lamina tapering gradually to petiole; petiole densely hairy with fine, white, mostly appressed hairs above and beneath. Capitula c. 6-9 mm long, scented. Peduncle c. 1-4 mm long, soft, flexible, hairy, with thin brown bracts at base c. 1-1.5 mm long, shorter peduncles ebracteate above; longer peduncles with 1(-2) pairs of leaf-like, opposite or single, oblanceolate bracts up to 5 or 6 mm long. Involucre cylindric to narrowly ovoid; involucral bracts spiralled, in three series, light green, hairy, with very hairy white margins and densely hairy apex bearing white crisped hairs. Florets c. 9-10 per capitulum, outer 5-7 florets pistillate, ligulate with deflexed white limb c. 2.5 mm long and white to cream stigma; inner few florets hermaphrodite, eligulate, with orange-yellow anthers and dark reddish purple papillose stigma. Achenes papillose-pubescent to nearly glabrous; pappus hairs greyish white, about 3.5 mm long.
[Reproduced from Wilson & Garnock-Jones (1992, New Zealand J. Bot. 30: 365–368) with permission from The Royal Society of New Zealand.]
Biostatus
Indigenous (Endemic)
Bibliography
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. [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]
Heads, M. 1998: Biodiversity in the New Zealand divaricating tree daisies: Olearia sect. nov. (Compositae). Botanical Journal of the Linnean Society 127(3): 239–285.
Hooker, J.D. 1864: Handbook of the New Zealand Flora: a systematic description of the native plants of New Zealand and the Chatham, Kermadec's, Lord Auckland's, Campbell's and Macquarie's Islands. Part I. Reeve, London.
Simpson, G. 1945: Notes on Some New Zealand Plants and Descriptions of New Species (No. 4). Transactions of the Royal Society of New Zealand 75: 187–202.
Wilson, H.D.; Garnock-Jones, P. J. 1992: Two new species names in Olearia (Asteracae) from New Zealand. New Zealand Journal of Botany 30(3): 365–368.
