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Acacia porcata

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Acacia porcata P.I.Forst., Austrobaileya 3: 261, fig. 1 (1990)

Decumbent shrub to 0.5 m high. Stems terete, velvety with white hairs, viscid. Stipules to c. 1 mm long. Phyllodes 13–19 per whorl, straight or slightly incurved in upper part, terete, 5–30 mm long, tapered at base, abruptly mucronate with mucro 0.2–0.5 mm long, sparsely hairy, viscid, with obscure venation. Peduncles 10–20 mm long, viscid. Heads 35–40-flowered. Flowers 5-merous; calyx 1.7–2.2 mm long, the lobes strongly incurved, lanceolate-ovate, obtuse, sparsely hairy; corolla lobes smooth, sparsely hairy. Pods sessile, flat, 11–27 mm long, 5–6 mm wide, viscid. Seeds longitudinal, c. 5 mm long, shiny, black, slightly viscid, ridged along middle; pleurogram obscure.

Restricted to a small area in Mundubbera Shire, c. 45 km SSE of Mundubbera, Qld. Grows on a granite rock outcrop at c. 440 m among Triodia sp. with a scattered overstorey of Eucalyptus , Grevillea , Acacia and Xanthorrhoea . Flowers Aug. and probably Sept.; fruiting in Nov.

Acacia porcata appears to be most closely related to A. longipedunculata but differs in having smooth corolla lobes and a pod with a longitudinal ridge. The calyx is also smooth and thinner. Acacia porcata has sepals more similar to those of A. galioides , A. chippendalei and A. orthotricha , but in other characters is not particularly close to these taxa. The pod of A. porcata is unlike that of any other species of the section and is also notable for the small number of septa and seeds, single-seeded pods being quite common. Although several species of Acacia have viscid foliage, no other has been recorded with viscid seeds.

Type of accepted name

5.5 km W of Toondahra Stn, Qld, Aug. 1988, P.I.Forster 4673 & C.G.Wilkinson ; holo: BRI; iso PERTH.

Illustration

P.I.Forster, loc. cit .

Representative collection

Qld: 5.5 km W of Toondahra Stn, P.I.Forster 4827 (BRI).

(ASG)

WATTLE Acacias of Australia CD-ROM graphic

The information presented here originally appeared on the WATTLE CD-ROM which was jointly published by the Australian Biological Resources Study, Canberra, and the Department of Parks and Wildlife, Perth; it was produced by CSIRO Publishing from where it is available for purchase. The WATTLE custodians are thanked for allowing us to post this information here.

Page last updated: Tuesday 11 September 2018