Synonymy

Hakea newbeyana R.M.Barker, J. Adelaide Bot. Gard. 13: 103 (1990)

T: c. 21 km NW of Holt Rock P.O. on track to Hyden, Coolgardie District, W.A., 5 Oct. 1976, L.Haegi 1202; holo: AD; iso: HO, NSW, PERTH.

Hakea oldfieldii Benth., Fl. Austral. 5: 530 (1870), p.p. (only with respect to Roe syntype, see note under H. oldfieldii).

Description

Spreading rounded shrub, 1–3 m tall, non-lignotuberous. Branchlets and young leaves appressed-sericeous, ferruginous. Leaves simple, 2.5–7.5 cm long, 1–2.2 mm wide; mucro 1–3 mm long.

Inflorescence axillary with 6–8 flowers; involucre 4–4.5 mm long; rachis 1–4 mm long, hirsute; pedicels 2.5–3.5 mm long, glabrous; buds straight. Perianth 2–3 mm long, yellow, glabrous. Pistil 3.8–4.5 mm long; pollen presenter a ±porrect cone.

Fruit obliquely broadly elliptic or elliptic, 2.5–3.5 cm long, 1.5–2.5 cm wide, smooth, not beaked, black- or brown-pusticulate; apiculum 1–3 mm long; horns 1.5–2 mm long. Seed 14–20 mm long; wing broadly down one side of seed body, narrowly down other, black.

Distribution and ecology

Occurs in sandy loam, in mallee or Salmon Gum woodland, in the Nyabing to Newdegate area of southern W.A., and a single collection from Neridup, east of Esperance.

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 (June–) Sept.–Oct.

Derivation of name

Named in honour of Kenneth R. Newbey (1936-1988), Western Australian collector and plant ecologist.

Kenneally, K.F. (1988). Obituary: Ken Newbey (1936-1988). Western Australian Naturalist 17, pp. 127-128.

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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. newbeyana is part of the Strumosa group, a group close to the Sericea and Nodosa groups and held together by the sharing of simple terete leaves, terminal or axillary inflorescences (if the latter these resprouting in subsequent seasons), glabrous pedicel and perianth and woody, smooth or verrucose, fruits with horns. Other species in the group include H. bicornata, H. circumalata, H. commutata, H. cycloptera, H. preissii, H. strumosa and H. vittata.

Notes

A species previously confused with H. oldfieldii of the Lissocarpha Group.

Both species have the straight buds of that group, but they can be distinguished by the pubescent branchlets and rachis of H. newbeyana compared with the glabrous branchlets and rachis of H. oldfieldii . The fruit of H. newbeyana is much larger (2.5–3.5 cm long, 1.5–2.5 cm wide) than the fruit of H. oldfieldii (1.6–2.3 cm long, 0.8–1 cm wide).

Representative specimens

W.A.: Parker Ra., J.S.Beard 5934 (PERTH); c. 16 km S of Kulin, R.H.Kuchel 2035 (PERTH); 5 km N of Nyabing, K.Newbey 981 (PERTH); 115 km E of Lake King on road to Daniell, P.G.Wilson 5736 (PERTH).

Weblinks

Link to FloraBase treatment of this species for WA.

Further illustrations

J.Young, Hakeas of W. Australia, Botanical District of Avon 18, 74 (1997).

I. Holliday, Hakeas. A Field and Garden Guide 140-1 (2005)

J.A..Young, Hakeas of Western Australia. A Field and Identification Guide 76 (2006)

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