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Habit. Photo G.Watton

Photo G.Watton

Photo G.Watton

Synonymy

Hakea hastata Haegi, Fl. Australia 17B: 394 (1999)

T: Tuttanning Nature Reserve, Avon District, W.A., 5 Nov. 1971, Hj.Eichler 20971; holo: AD; iso: K, PERTH.

Description

Sparingly branched sprawling shrub, 1.5–3 m tall; resprouting capacity unknown. Branchlets densely tomentose with pale rust-brown hairs at flowering. Leaves narrowly to broadly ovate, ±flat, 2–4.7 cm long, 9–24 mm wide, cordate to rounded at base, crenate to ±entire, acute to acuminate, pale green; veins longitudinal, 1–3, in broad leaves also palmate, prominent above and below; secondary venation reticulate.

Inflorescences solitary with 18–22 flowers; pedicels glabrous. Perianth cream-white. Pistil 4.5–6 mm long; gland present.

Fruit obliquely ovate to broadly ovate, 1.6–2 cm long, 0.9–1.2 cm wide, not curved at apex, obscurely beaked. Seed obliquely ovate or elliptic, 11–14 mm long; wing extending fully or partly down one side of body only, sometimes notched near base, blackish brown throughout.

Distribution and ecology

Known from only a few locations between Pingelly, Kulin and Katanning in the Avon District of south-western W.A., in eucalypt woodland or mallee with heathy understorey, in sand or sandy loam over laterite. Rare.

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 hastatus, Latin for hastate or spear-like, refers to the spear-head shape of the leaves.

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Relationships

Part of the Conogynoides group recognised by Bentham and characterised by a conical pollen presenter, veined leaves, glabrous perianth and fruits without horns.

 

Within this section 12 species were assigned to the informal Undulata group by Barker et al. (1999). This group of Hakea species was combined morphologically because they all have simple flat leaves with 3-7 prominent longitudinal veins, 10-40 small flowers (with 3-10.5 mm long pistils) and decurved woody fruits.

Members of the group are H. ambigua, H. anadenia, H. dactyloides, H. elliptica, H. falcata, H. ferruginea, H. hastata, H. laevipes, H. loranthifolia , H. neurophylla, H. plurinervia and H. undulata , from the eastern states and from SW WA. The newly described H. oligoneura (Nuytsia 19: 254 (2009) from the SW coast of WA belongs with this group.

Notes

This taxon was previously not recognised as distinct from H. ferruginea , which differs in its larger flowers, relatively shorter pedicels, larger and more prominently beaked follicles and its more southerly distribution.

Representative specimens

W.A.: Tuttanning Reserve, E of Pingelly, G.Heinsohn 12 (PERTH); c. 10 km S of Toompup, K.Newbey 1436 (PERTH); 14 km N of Tarin Rock along road to Kulin, R.Purdie 5339 (CANB).

Weblinks

Link to FloraBase treatment of this species for WA.

Further illustrations

J.Young, Hakeas of W. Australia, Botanical District of Avon 15, 50 (1997), as H. ferruginea .

J.A..Young, Hakeas of Western Australia. A Field and Identification Guide 49 (2006)

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