R.S. Cowan & B.R. Maslin, Acacia Miscellany — 3 
219 
Other specimens examined. WESTERN AUSTRALIA: Mt Singleton, J.S. Beard 6454 (PERTH), 
C.A. Gardner 12012 (PERTH), B.R. Maslin 4240 (CANB, K, MEL, PERTH), and 5 /7. Smith 614 
(BRI, MEL, PERTH). 
Distribution. South-west Western Australia in Austin Botanical District (1:250,000 map H50-7). 
Known only from Mt Singleton between Wubin and Paynes Find. 
Habitat. Rocky clay or loam in open scrub on upper slopes and summit of mountain. 
Flowering and fruiting periods. Flowering August — September; no mature legumes seen. 
Affinities. Related to A. multilineata but differing most obviously in its persistent, more or less 
recurved, spinescent stipules and very strongly salient nerves; its peduncles are also longer. The 
new species is restricted to Mt Singleton, W.A. 
Conservation status. 2V, using the criteria of Briggs & Leigh (1988). 
Etymology. The specific epithet, refers to the stipules as small claws (the diminutive of unguis, 
Latin for nail, claw or talon). 
Acknowledgements 
Suzanne Curry, technical assistant employed with ABRS grant funds, provided invaluable 
support in the preparation of this account, without which we would have been severely 
handicapped. The illustrations prepared by John Rainbird are especially helpful to complement the 
text. We are very grateful to both our collaborators. 
References 
Briggs, D. & J.H. Leigh (1988). "Rare or Ihreatencd Australian plants." Revised edn. (National Parks and Wildlife Service, 
Commonwealth of Australia: Canberra). 
Maslin, B.R. & L. Pedley (1988). Patterns of distribution of Acacia in Australia. Austral. J. Bol. 36: 385-393. 
