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Photo W.R.Barker

Photo W.R.Barker

Photo W.R.Barker

Synonymy

Hakea macrorrhyncha W.R.Barker, J. Adelaide Bot. Gard. 17: 185 (1996)

T: c. 3 km E of Ranger Station at Castle Rock camping area, SW of Dr Roberts Waterhole, Girraween Natl Park, Darling Downs region, Qld, 7 Sept. 1988, W.R.Barker 5611 & I.R.Telford; holo: AD; iso: CANB, others to be distributed.

Hakea sp. A aff. propinqua, S.W.L.Jacobs & J.Pickard, Pl. New South Wales 180 (1981), p.p., as to northern tablelands N.S.W. and some Qld occurrences.

Hakea sp. aff. propinqua, N.C.W.Beadle, Stud. Fl. NE New South Wales 247 (1972), p.p., as to tablelands plants.

Description

Erect, single-stemmed or forked close to base, shrub or small tree, 1.8–6 m high; resprouting capacity unknown. Branchlets densely white-tomentose, with hairs persistent until flowering. Leaves terete, often grooved below, (3–) 4.5–9 cm long, 0.9–1.5 mm wide, initially white-tomentose, quickly glabrescent and smooth; apex porrect, with mucro 0.8–1.5 mm long.

Inflorescence axillary umbel of c. 3 or 4 flowers; rachis knob-like, 0.5–0.7 mm long, white woolly-pubescent; pedicels 4–5.5 mm long, moderately densely white short-tomentose. Perianth 3–3.8 mm long, cream-white, moderately to densely white short-tomentose. Pistil 6.5–8 mm long, recurved.

Fruit laterally broad ovate, 35–45 mm long, 21–25 (–30) mm wide, rugose-reticulate; beak long-triangular, smooth but for small dense round pusticules, decurrent down one side for much of length, very shortly down other; apiculum ±absent; horns obscure. Seed 30–34 mm long, 9–13 mm wide; wing decurrent 1/2–3/4 way down one side of body only, black throughout; seed body flanged on pale wood side.

Distribution and ecology

Restricted to the Torrington area of north-eastern N.S.W. and nearby Girraween Natl Park and environs in south-eastern Qld. Very localised in hilly granitic areas of layered open forest or low closed woodland.

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 (2 records) Aug.–Sept.

Derivation of name

From macro-, Greek for long and rhynch-, Greek for nose or beak, a reference to the long beak of the fruit of this species.

 There are four species epithets ending in  -rhyncha within Hakea and all are spelt -rrhyncha which is correct  Greek usage and the correct spelling for these species. However from Linnaeus on, not all authors have added the additional r when forming such epithets and species epithets will be found in which there is only a single r. Since the original spelling is considered the correct one by the international rules governing botanical nomenclature, both spellings will be found in the literature.

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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. macrorrhyncha 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. ochroptera, H. sericea and H. tephrosperma, predominantly from the eastern states of Australia.  

Notes

The bases of the leaves of H. macrorrhyncha are deep pink-red (Barker 5611 & Telford), and they lack the sharp flange found in H. propinqua ; the pollen presenter is also pink-red from bud stage. Hakea macrorrhyncha can be distinguished from its closest relatives, H. macraeana, H. ochroptera, H. decurrens and H. sericea , by its longer beak. Hakea lissosperma , which it superficially resembles, differs by the lack of a groove in the leaf, as well as by its smaller fruit and sparsely pubescent or glabrous perianth.

Conservation status

H. macrorrhyncha is classified as rare under Queensland’s Nature Conservation (Wildlife) Regulation 2006

Representative specimens

Qld: N side of Girraween Natl Park, W.J.F.McDonald 278 (BRI). N.S.W.: Torrington, Jan. 1916, J.L.Boorman s.n. (NSW 182514); Blatherarm Ck, 10 km NE of Torrington, 5 Nov. 1969, H.J.Wissmann s.n. (NE).

Weblinks

Link to PlantNET treatment in NSW.

 

More photographs of this species can be seen on the Australian National Botanic Gardens site.

 

 

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