Fabaceae tribe Bossiaeeae Ptychosema

 
Ptychosema Benth. 1839 
2 spp.
Australia, distribution very disjunct (1 sp. in south-western W Australia,
  the other in the SW corner of the N Territory and in the arid interior of N
  New South Wales) 
From ptycho (Gk.: a fold) and sema  (Gk.: a standard), apparently
  in reference to the deeply notched apex of the standard petal 
Shrubs; subtropical and mediterranean shrubland, favouring sandy soils 
Reference(s): Lee (1973); Crisp in Jessop (1981: 152); Weber (1986: 695 -
  696); James in Harden (2002: 517) 
Distinguished from other genera in Bossiaeeae by the imparipinnate leaves
  with opposite leaflets 
© J. H. Ross

Ptychosema anomalum,
Uluru, Central Australia

Link to a picture of Ptychosema pusillum