Acacia subsessilis A.R.Chapm. & Maslin, Nuytsia 12: 490 (1999)
Rounded or infundibular, straggly shrub 1–2 m high. Branchlets with raised stem-projections where phyllodes have fallen, lenticellular, glabrous. Phyllodes sessile to subsessile, mostly narrowly linear, flat to terete, 1–3 cm long, 1–1.5 mm wide, pungent, rigid, with 8 nerves in all, 3 nerves per face when phyllodes flat; gland to 0–2 mm above base. Inflorescences simple, 1 per axil; peduncles 2–6 mm long, glabrous or sparsely puberulous; heads obloid to short-cylindrical, 7–15 mm long, 4–6 mm diam., subdense. Flowers 5-merous; sepals united for 3/4–4/5 their length. Pods submoniliform, to 8 cm long, 5–6 mm wide, thinly coriaceous to thinly crustaceous, glabrous. Seeds (few seen) longitudinal, elliptic, 3.5–4 mm long, shiny, black; aril cream.
Occurs in disjunct localities from Mount Farmer HS to Yalgoo and Fields Find, W.A. Grows in shallow red sand and stony gravel, often on rocky slopes in open shrubland.
One collection with flat phyllodes has been seen, i.e. P.J.Curry 1052 from the northernmost extent of the range.
Superficially resembles A. colletioides and A. chapmanii subsp. chapmanii but these two are readily distinguished by their globular to subglobular heads, consistently terete phyllodes and strongly curved to coiled pods.
Type of accepted name
0.5 km N of Fields Find roadsign at Fields Find, W.A., 21–23 July 1982, R.J.Cumming 2018 ; holo: PERTH; iso: CANB, G, K, MEL.
Representative collections
W.A.: 4.2 km E of Yalgoo, R.J.Cumming 1978 (CANB, NSW, PERTH); Mount Farmer Stn, P.J.Curry 1052 (CANB, MEL, PERTH); between Ningham Stn and Fields Find, B.R.Maslin 4246 (CANB, PERTH).
(ARC & 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.
