Synonymy

Hakea eneabba Haegi, Fl. Australia 17B: 396 (1999)

T: 2.8 km E of Brand Hwy on Tootbardi Rd, W.A., A.S.George 16817; holo: PERTH; iso: AD, CANB.

Description

Multi-stemmed densely branched shrub, 0.3–1.3 m tall, lignotuberous. Leaves alternate in lower parts, usually whorled in flowering parts, shallowly concave, narrowly obovate, very rigid, 4.5–12 cm long, 5–14 mm wide, entire, acuminate to rounded-mucronate, midgreen; longitudinal veins prominent at least on underside, 1 above (sometimes obscure) and 1–3 below; pinnate veins visible but obscure.

Inflorescence with 14–18 flowers; pedicels 2–3 mm long, glabrous. Perianth pale yellowish green proximally, deep yellow distally, split to base abaxially only. Pistil 28–31 mm long; gland obovoid.

Fruit 1 or 2 per axil, obliquely ovate to obovate in lateral view, 2.2–2.4 cm long, 1.1–1.4 cm wide, shortly beaked and apiculate, not corky. Seed obliquely ovate, 15–17 mm long, 8–10 mm wide; wing extending down both sides of body, blackish brown, sometimes with paler streaks.

Distribution and ecology

Occurs in the sand heaths north of Perth, W.A., from Jurien Bay north to Three Springs, with a distribution centred on Eneabba, and an isolated record from south of Gingin. Generally found on deep sand in open heath to low open heath, apparently infrequent.

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 July–Sept.

Derivation of name

Named after the locality on which the distribution of the species is centred. Eneabba is an aboriginal place name.

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Relationships

Part of Sect. Conogynoides recognised by Bentham (1870) and characterised by a conical pollen presenter, veined leaves, glabrous perianth and fruits without horns.

Within this section 5 species were assigned to the informal Corymbosa group by Barker et al. (1999). This group has yet to be tested for monophyly but can be recognised morphologically by whorled, rigid leaves in the flowering branches and erect fruits.

Members of the group are H. acuminata, H. cinerea, H. corymbosa, H. eneabba and H. victoria , all from SW WA.

Notes

In the past this newly recognised species was confused with H. corymbosa and H. cinerea . It is distinct from the former mainly in being lignotuberous, in its more conspicuously ciliate involucral bracts and in its bright yellow flowers, and from the latter mainly in the whorled arrangement of its branchlets, its bright green foliage and its broader fruits and seeds.

Reportedly widely planted on tailings after sandmining at Eneabba (B.Lamont, pers. comm.).

Representative specimens

W.A.: intersection of Green Head Rd and Brand Hwy, B.Barnsley 853 (CANB); Mt Lesueur Reserve, 1 km W on track which intersects Banovich Rd at 6 km N of Jurien Rd, J.D'Alonzo 76 (PERTH); 59 km W of Coorow, C.H.Gittins 1689 (NSW).

Weblinks

Link to FloraBase treatment of this species for WA.

Further illustrations

J.A..Young, Hakeas of Western Australia. A Field and Identification Guide 40 (2006)

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