Fhra of Australia : 



2:;:. 



South Australii — 



Encounter Buy, Miss Hussey, 1S9*1. 



Mount Lofty Range. 

 Western Australia — 



Vassey River, Oldtield. 



Hampden, W. Clarke. 

 Tasmania — 



Cordon River, Miss Warburton, 1(S96. 

 3. P. cunstricta. — O. H. Sargent. 

 Localities — 



Western Australia — 



1. Cut Hill, York, No. 472, O. H. Sargent, 



July, 1907. 



2. Cowcowing, No. 1073, M. Koch, 1904. 



3. Creenough Flat, Ch. Cray, No. 9. 



P. lvvoluta 



tiexa. 



P. praecox, 

 P. praecox. var. robusta. P. comtrieta. 



group a. 



group h 



common ancestor. 



This din grain suggests a very interesting phylogenetic change. 



Group A — Has long pointed petals and sepals in the galea, but the two 

 species hi to which it divides have broad and strap-like labella indicated 1>\ the 

 single and double lines respectively. 



Group B — Has characteristic short, broad pettils in the galea ; and the two 

 main species into which it is divided have broad and strap-like labella re- 

 spectively. 



It is quite possible in the evolution of the group that there could thus be 

 divergence of external features of the flower, and likewise that both types of 

 Jabella should be represented in the subsequent divergences 



P. TOVEYANA, n. sp. 



Leaves alternate, under 1 inch long, ovate or broadly oblong 

 Scape 1 flowered. Petals and sepals of galea short and broad. 

 Labellum much longer than column, broad at the base, and slightly 

 tapering towards anterior end. Slightly but very distinctly bifid. 

 Appendage hairs very pronounced. 



Locality. -^Vic, Mentone. J. R. Tovey, 1907. 1908. 1909, 1910, 

 1911, 1912, 1913, 1914. 1915. Mentone. A. Tadgell, July. 1909. 



