Synonymy
Hakea teretifolia (Salisb.) Britten, J. Bot. 54: 60 (1916) subsp. teretifolia
Banksia teretifolia Salisb., Prodr. Stirp. Chap. Allerton 51 (1796). Lambertia teretifolia (Salisb.) C.F.Gaertn., Suppl. Carp. 213, t. 217, fig. 7 (1807). T: 'Ex Port Jackson auct. Jac. Lee'. holo: n.v., apparently lost.
Hakea glabra Schrad. & J.C.Wendl., Sert. Hannov. 27, t. XVII (1797). T: without locality [in Novae Hollandiae sinu Botany-bay, N.S.W.], without date, [? Schrader] Herb. Willdenow 2470; ?syn: B; without locality, without date, Anon. s.n.; ?syn: B, M.
Conchium longifolium Donn, Hortus Cantabrig. 2nd edn, 14 (1800), nom. nud.; C. longifolium Donn ex Sm., in A.Rees, Cycl. 9 (1807), pages unnumbered, nom. illeg. (Banksia teretifolia in synonymy).
?Hakea longifolia Dum.Cours., Bot. Cult. 5: 106 (1805). T: no specimen cited and Dumont de Courset's herbarium not located.
Hakea pugioniformis Cav., Anales Hist. Nat. 1: 213, t. 11 (1800), nom. illeg. (H. glabra in synonymy); Conchium pugioniforme (Cav.) Sm., in A.Rees, Cycl. 9 (1807), pages unnumbered, nom. illeg.; Banksia pugioniformis (Cav.) J.Parm., Cat. Arbr. Parm. 12 (1818), nom. illeg. T: Port Jackson, [N.S.W.], without date [Mar. 1793], L. Née (Malaspina expedition); syn: MA (photo seen).
Hakea pugioniformis Cav. R.Br., Trans. Linn. Soc. London 10: 179 (1810); Hakea pugioniformis sericea Endl., Gen. Pl. Suppl. 4(2): 85 (1848), nom. illeg. (type variety).
Hakea glauca Salisb., in J.Knight, Cult. Prot. 106 (1809), nom. illeg. (number of earlier names in synonymy).
Conchium corniculatum Sm. ex Willd., Enum. Pl. 141 (1809). T: without locality, without date, [?Schrader] Herb. Willd. 2470; syn: B.
Description
Low spreading shrub, 0.3–2.6 m tall. Branchlets moderately to densely appressed-sericeous. Leaves rigid, terete, sometimes flattened when young, 0.5–7.7 cm long, 0.8–1.7 mm wide.
Inflorescence with 4, 6 or 8 flowers; involucre 4.5–6.5 mm long; pedicels 2.5–4 mm long, densely white-appressed-sericeous, with some hairs suberect; hairs extending onto perianth.. Perianth 3.7–5.5 mm long, white or cream-white. Pistil 7.5–11 mm long, deflexed; pollen presenter 0.5–0.7 mm long.
Fruit narrowly ovate to lanceolate with an obliquely transverse, irregularly-toothed crest c. 1/3 distance from base, 1.6–2.7 cm long, 0.5–0.9 cm wide, finely black-pusticulate or smooth, dark brown-streaked, long-apiculate (often broken); apiculum 6–9 mm long. Seed narrowly elliptic, 11–15 mm long; wing light or dark brown.
Distribution and ecology
Found in sandy heath plains or sandstone formations from Coffs Harbour to the Sydney region, N.S.W.
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.–Feb. (rarely June–July).
Derivation of name
From tereti-, Latin for terete or circular in cross section and folia, Latin for leaf, a reference to the shape of the leaves of this species.
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. teretifolia was treated as as a single member of its own named group, next to the Rostrata group, by Barker et al. (1999). While it lacks the sigmoid fruits of the Rostrata group, the straight fruits that is does possess have characteristics suggesting a relationship to the Rostrata group fruits; H. teretifolia shares the mostly needle leaves, pubescent perianths and oblique pollen presenters of that group.
Notes
T.D.Auld & D.A.Morrison, Austral. J. Bot. 40: 1–11 (1992), record that some, but not all, populations in the Sydney region produce lignotubers. Whether this correlates with the two taxa recognised here is not known.
Representative specimens
New South Wales: Budawang Ra., c. 6 km S of Sassafras, M.P.Austin & J.Duggan 6 (CANB, NSW); 12.9 km ESE of Nerriga, J.Pickard 1314 (NSW); North Curl Curl headland, M.J.Taylor 160 (NSW).
Weblinks
Link to PlantNET treatment.
Further illustrations
I. Holliday, Hakeas. A Field and Garden Guide 204-5 (2005)