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Photo W.R.Barker

Photo W.R.Barker

Photo W.R.Barker

Synonymy

Hakea ochroptera W.R.Barker, J. Adelaide Bot. Gard. 17: 187 (1996)

T: c. 1.2 km by road from and c. 250 m direct N of the summit of Mt Moombil, N.S.W., 10 Sept. 1988, W.R.Barker 5636 & I.R.Telford; holo: AD; iso: AD, to be distributed.

[Hakea macraeana auct. non F.Muell.: W.R.Barker in G.J.Harden (ed.), Fl. New South Wales 2: 61 (1991), p.p., as to northern populations]

Description

Tall shrub or small tree to 10 m tall; lignotuber apparently absent. Branchlets densely tomentose with persistent ferruginous hairs and some white-appressed hairs underneath. Leaves narrowly divergent, grooved below, 1.5–13.5 cm long, 0.75–1.1 mm wide, appressed-pubescent, quickly glabrescent; apex porrect, with mucro 1.1–2.2 mm long.

Inflorescence axillary umbel of 1–6 flowers; rachis simple, obscure, 0.5–1.2 mm long, densely and shortly woolly-tomentose with ferruginous hairs tardily glabrescent; pedicels 4.5–7.5 mm long, sparsely appressed-sericeous with hairs white. Perianth c. 4.2–5 mm long, white, glabrous, not glaucous. Pistil c. 9.5 mm long.

Fruit 3.2–4 cm long, 2.1–2.3 cm wide; pustules coarse, black or same colour as bark; beak small, transverse, ±smooth; horns obscure or absent; apiculum obscure or absent. Seed 23–27 mm long; wing extending 1/2–3/4 way down one side only, light brown to off-white.

Distribution and ecology

Occurs in the north-eastern highlands of N.S.W. in the Dorrigo area. Common on hillsides, in skeletal soil between rock sheets in light brush or depauperate warm-temperate rainforest.

To plot an up to date distribution map based on herbarium collections for this species see Australia's Virtual Herbarium. Localities outside the native range may represent cultivated or naturalised records.

Flowering time

Flowers Sept.–Oct.

Derivation of name

From ochro-, Greek for yellow and ptero-, greek for wing, a reference to the colour of the seed wing, an important diagnostic difference from the closely related H. macraeana .

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Relationships

Part of Section Hakea of Bentham (as Euhakea) and characterised by a non-conical pollen presenter, leaves without obvious venation, perianths with or without hairs and fruits with or without horns. Barker et al. (1999) recognised a number of informal morphological groups within the section.

H. ochroptera was treated as part of the Sericea group, a predominantly eastern states group characterised by their simple terete leaves, few-flowered inflorescences, hairy pedicels and solitary, prominently woody fruits, these often markedly verrucose or pusticulate and usually with horns.

Other members of the group are H. actites, H. constablei, H. decurrens, H. gibbosa, H. kippistiana, H. leucoptera, H. lissosperma, H. macraeana, H. macrorrhyncha, H. sericea and H. tephrosperma, predominantly from the eastern states of Australia.  

Notes

Distinguished from its closest ally, H. macraeana , by its glabrous perianth, its light-coloured seed and the arms of the hairs on the branches ascending to suberect, not ±appressed.

Representative specimens

N.S.W.: 1 km NW of Dibbs Head, Dorrigo Natl Park, A.G.Floyd 964 (NE, NSW); Mt Moonbill-Dorrigo Plateau, L.J.Webb & J.G.Tracey 13628 (BRI).

Weblinks

Link to PlantNET treatment.