Acacia lateriticola Maslin, Nuytsia 1: 433; 435, fig. 14 & 488, map 7 (1975)
Shrub 0.5- 1.5 m high. Branchlets usually pilose and hirsutellous admixed, the latter type of hairs sometimes sparse. Pinnae mostly 2 pairs, 2- 6 mm long (proximal pinnae), 6- 20 mm long (distal pinnae); rachis 3- 5 mm long; pinnules 1- 3 pairs (proximal pinnae), 2- 6 pairs (distal pinnae), narrowly oblong to lanceolate, 4- 8 (- 15) mm long, 1.5- 3 mm wide, flat or recurved to revolute, green, usually sparsely hirsute at least near margins; gland on rachis at base of pinnae, sessile. Inflorescences simple, 1 or 2 per axil; peduncles 15- 30 mm long, glabrous; heads globular, 7- 10 mm diam., 24- 36-flowered, light golden, rarely cream. Flowers 5-merous; sepals 2/3- 3/4-united. Pods narrowly oblong, 3- 5 cm long, 7- 11 mm wide, crustaceous, pilose, sometimes glabrous; margins thickened. Seeds transverse to oblique, 2.5- 4.5 mm long; aril once-folded.
Occurs from Chittering S to Manjimup, also Dunsborough, south-western W.A. Grows in lateritic sand in Jarrah ( Eucalyptus marginata ) and Marri ( Corymbia calophylla ) forest and woodland.
Closely related to A. browniana but distinguished by its larger heads with more flowers and generally longer peduncles and pinnules. Their distributions overlap in the Manjimup district where sterile specimens can be confused with A. browniana var. obscura . Also similar to A. empelioclada . A variant with glabrous branchlets and pinnules occurs at Dunsborough (e.g. B.R.Maslin 6765 , PERTH).
Type of accepted name
13 km S of Donnybrook on South Western Hwy, W.A., 18 Sept. 1972, B.R.Maslin 2841 ; holo: PERTH; iso: CANB, K, MEL, NY.
Synonymy
Acacia strigosa f. genuina Meisn., in J.G.C.Lehmann, Pl. Preiss. 2: 205 (1848), nom. inval.
Acacia strigosa var. borealis E.Pritz., Bot. Jahrb. Syst. 35: 312 (1904). Type: Serpentine, W.A., 21 June 1901, L.Diels 3159 ; iso: PERTH (Fragment ex B).
[ Acacia cycnorum auct. non Benth.: W.J.Hooker, Bot. Mag. 78: t. 4653 (1852)]
[ Acacia obscura auct. non A.DC.: G.Bentham, Fl. Austral. 2: 418 (1864) p.p. , as to J.Drummond 2: 153 (CGE, E, K, MEL, NSW, OXF, P) & Gordon R., A.Oldfield (MEL)]
Illustrations
B.R.Maslin, loc. cit .; R.Erickson et al. , Fl. & Pl. W. Australia 2nd edn, 46 (1979); M.Simmons, Acacias Australia 2: 295 (1988).
Representative collections
W.A.: 2.4 km W of Manjimup towards Nannup, B.R.Maslin 2861 (PERTH); 9.7 km E of Muchea, R.D.Royce 7823 (BRI, CANB, MEL, NSW, PERTH).
(BRM)
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.
