Flora of Australia. 2'-\:> 



2. That evolution is evidently taking plaee in these related 

 groups, and that so many stages in the seale are represented that 

 it is difficult to limit the peculiarities, and to say that one type can 

 be definitely separated from another. 



3. That the arrangement of the vegetative leaves, the labella, and 

 the characters of the petals and sepals in the galea and tlie claw are 

 the surest guide to a clear distinction. 



Acting on these conclusions', we have arrived at the following 

 classification, which to us appears satisfactory. 



(i.) That taking the species we have mentioned, there is one group 

 having the two lateral petal* of the galea long and pointed. 



(ii.) And another group, having the two lateral petals of the- 

 galea broader and more rounded at the ends. 



Thus— 



Group (a) includes P. reflexa and /'. revoluta. 



Group (1)) includes /'. praecox, a larger form of P. praecox, men- 

 tioned above, and for which we have suggested the name P. praecox, 

 var. robusta, and P. constricta. 



Qrotip A. — Petals and sepals of galea elongated, and ending in fine- 

 points, even when flower small. 



1. P. reflexa, It Br., broad label I um, terminating in a tine- 



point, e.g., PI. Preiss, 2203, Bentham's type. 

 Localities— 



Victoria — 



Grampians. 



I'pper Murray, C. French, Junr. 



Bacchus Marsh, C. French, Junr. 



Upper Avoca, A. Purdie, May, 189o. 



Port Fairy, Rev. W. Whan, 1889. 



Lower Yarra, G. Coghill. April, 1885. 



Yarra, April, 1867. 



Tarangower. 

 New South Wales — 



Quildong, No. 442, W. Ba.mrlen. 



Near Sydney, Fitzgerald. 



Near Scone, N.8.W., Miss H. Gaiter, 1883. 

 South Australia — 



Near Mount Lofty, A. Tepper, 1882. 



2. P. revoluta, R. Br., long narrow, strap -like lahellutti. 



Localities — 



Victoria — 



Grampians. 



White Hills, Bendigo, A. Haggard, 1880. 



