44 The Phanerogamia of the Mitta Mitta Source Basin. 



Richea Gunnii (J. Hooker). — Common on beds of spagnum 

 on the Paw Paw and Bogong High Plains ; in basaltic 

 areas, from 4000 to 6000 feet height. 



APETALE^E GYMNOSPERME^. 



Conifers (Haller). 



]Nageia alpina (F. v. M.). — This is the only representative 

 of the Coniferse to be met with in this source- basin, and 

 it appears to be restricted, to the rocky alpine summits 

 of the highest peaks, as Mount Wills, Mount Cope, and 

 Mount Latrobe ; in granitic and metamorphic schistose 

 areas, of 5000 to 6500 feet. It extends easterly to the 

 porphyritic summits of the Cobboras at about 6000 

 feet. 



MONOCOTYLEDONEiE. 

 CALYCES PERIGYN^E. 



Orchldke (Haller). 



Dipodium punctatum (R. Brown). — This beautiful, leafless 

 orchid is sparsely distributed over the dry, stony 

 ridges within this area, being more abundant on the 

 crests of the Silurian riclges on the littoral slopes of the 

 Wentworth River, in the argillaceo-mica schist area, west 

 of Lake Omeo, and on the Silurian ranges west from the 

 Mitta Mitta River, toward Mount Wills ; at elevations 

 of 2000 to 4000 feet. 



Spiranthes Australis (Lindley). — Abundant on the rich grass 

 land at Mount Leinster Creek ; on alluvial flats over- 

 lying granite-porphyry formation, at elevations of 3000 

 to 4000 feet. 



Thelymitra aristata (Lindley). — Common on the open 

 pasture lands on Livingstone Creek, at elevations of 

 about 2500 feet, in metamorphic-schist formation ; 

 ascends to fully 4000 feet. 



Diuris maculata (Smith). — Very common along the Living- 

 stone Creek, Cobungra, Victoria, Bundara, and Big 

 River valleys ; on grass land ; up to 4000 feet. 



Diuris pedunculata (R. Brown). — Abundant along with the 

 preceding species, in similar localities, and ascending to 

 5000 feet. 



