108 R. S. Rogers: 



Dandenong Creek, near Oakleigh (C. French, jun.). 



Near Dandenong Ranges (C. French, jun., 1890). 



In addition to these localities, Mr. C. French, jun., has recorded 

 the following : — 



Sandringham, Cheltenham, Mordialloc, Frankston, Beaconsfield. 



It has not been recorded in South Australia, but it is said to occur 

 in Tasmania. 



Pterostylis alpina, sp. nov. 



Plant glabrous, slender, often very tall, varying in height from 

 7 to 19 inches. No radical rosette ; leaves, leaf-like bracts or bracts 

 generally 5, more rarely 4, of varying size and shape, usually 

 lanceolate, ovate-lanceolate or oblong-lanceolate, clasping at the 

 base, the larger ones sometimes attaining a length of 3 inches, the 

 lowest often represented by a mere scale-like bract, but sometimes 

 leaf-like and large, though not exceeding the one immediately above 

 it in size, the second and third from the base of the stem usually 

 the largest, occasionally nearly all equal. Flower single, erect, 

 glabrous, green, large, 1-1| inch (not including the ovary); galea 

 gradually curved forward above the anther, not produced into a 

 fine point, but rather blunt; conjoined sepals narrowly cuneate at 

 the base, including a sinus of about 100 deg., lobes produced into 

 filiform points embracing the galea, and about as long or slightly 

 longer than dorsal sepal. Labellum linear-lanceolate, curved for- 

 ward at the tip, rather blunt; lamina of nearly equal breadth until 

 the bend, tapering towards the tip, under surface of lamina convex 

 in transverse section, traversed throughout its length by a well- 

 marked mesial raised line, concave below with groove correspond- 

 ing to raised line; appendage rather densely penicillate. Column 

 rather shorter than labellum, anther oblique ; upper lobes of wings 

 toothed ; lower lobes rather narrow, blunt, ciliated. Stigma promi- 

 nent, wide, ovate-lanceolate with the point upwards. 



The shape of the fknver is very similar to that of /'. carta, Br., 

 but in no other respects does it resemble that species. The differen- 

 tial diagnosis between P. alpina, P. falcata and P. furcata, Lindl., 

 is shown in the following table: — 



