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Flora of Australia Online

Grevillea agrifolia A.Cunn. ex R.Br., Suppl. Prodr. Fl. Nov. Holl. 24 (1830)

T: northern Australia [W.A. or N.T.], 1819, A.Cunningham 411 (2nd Voyage of Mermaid ); lecto: BM, fide D.J.McGillivray, Telopea 1: 24 (1975).

Shrub or tree, 1–4.5 m high. Leaves obovate to obovate-cuneate or obtrullate or rarely elliptic or almost round, 5–16 cm long, (10–) 20–55 mm wide, usually with 2–5 (–8) marginal teeth or shallow broadly triangular lobes mostly in apical half or occasionally entire; surfaces similar with an inconspicuous dense to open indumentum of appressed biramous hairs. Conflorescence terminal or axillary, decurved, simple or basally 2- or 3-branched; unit conflorescence dense, ovoid to shortly subcylindrical; ultimate floral rachis 20–50 mm long. Perianth glabrous outside or occasionally subsericeous with biramous hairs only, white-villous inside; tepals everting after anthesis with beard displayed. Pistil 13.5–20 mm long; ovary glabrous or with scattered erect hairs towards apex; style glabrous or with a sparse to open indumentum of minute biramous and/or erect simple glandular hairs over some or all of its length. Follicle obliquely ellipsoidal to obloid-ellipsoidal or subglobose, 11–24 mm long, glabrous. 

Occurs in the Kimberley region of W.A. and adjacent offshore islands, and extends to the Victoria R. district of N.T. 

Some populations in the northern Kimberley have smaller fruits and generally narrower leaves, and have been distinguished as a separate species, G. microcarpa Olde & Marriott (Telopea 5: 415–416 (1993)). The nominated differences in leaves, fruits, and stylar indumentum are however not absolute, and at various locations there is considerable intergradation, as well as (at others) apparent sympatry with no intergradation. Influences of microhabitat in these populations should be considered. In view of the relatively high frequency of intergrades, separate species are hard to maintain and two subspecies are recognised here.

(R.O.Makinson)

Mature fruit (15–) 18–23 mm long; pericarp 2.8–3.1 (–4.6?) mm thick at centre-face; most leaves > 40 mm wide

subsp. agrifolia

Mature fruit usually 11–15 mm long; pericarp ≤ 1.5 mm thick at centre-face; most leaves usually < 40 mm wide

subsp. microcarpa

 

Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999), products of ABRS, ©Commonwealth of Australia