878 LIST OF THE ORCHIDE^E OP THE MUDGEE DISTRICT. 



The Cumberland genera not represented here are Bolbophyllum, 

 Sarcochilus, Cy rubidium, Galeola, Gastrodia, Spiranthes, Orthoceras, 

 and Cryptostylis. I believe I collected Cymbidium canaliculatum 

 here some years ago, but at this length of time cannot be 

 certain, having unfortunately neglected to make drawings or 

 preserve specimens. The eight above-mentioned genera are mostly 

 epiphytal, or semi-epiphytal. The absence of these plants is 

 doubtless due to the dryness of the climate and soil. This is 

 rendered probable by the fact that in the gullies at Cooyal and 

 Mullamuddy, two species of Dendrobium and one of Sturmia 

 nourish. In these gullies, on account of the depth and shade, 

 there is much more moisture than is found in similar places among 

 lower hills. 



The plant which I suppose to have been Cymbidium was 

 collected in the same gully as the new species of Corysanthes, 

 which is also a moisture-loving form, and almost confined to the 

 coast district and mountains. T cannot understand why Orthoceras 

 strictum, Caleana major, and Cryptostylis do not extend to this 

 district, as they are capable of resisting a considerable amount of 

 drought. I fully expected to find them on the Dividing Range at 

 Cooyal, but was disappointed. 



We cannot be said to have any species — much less a genus 

 peculiar to the district, Diuris tricolor having been collected 

 elsewhere. Pterostylis clavigera and Corysanthes (n. s. ) may have 

 been overlooked on account of their being so small and incon- 

 spicuous. 



