BY ALEX. G. HAMILTON. 867 



miles), and on one occasion I collected it on the eastern slope of 

 the Dividing Range there. But the purple-flowered plant I have 

 not seen away from the sandstone. Of the yellow variety, M r. 

 Fitzgerald says — " It may possibly be D. sqiui7natum, referred to 

 (in a note) by Bentham, in the Flora Australiensis, as from New 

 Caledonia." But the plants which T sent Mr. Fitzgerald must 

 have altered in colour, as he tells me they were greenish when he 

 got them, and were figured so, whereas when I packed them up, 

 they were yellow inclining to orange. Mr. F. M. Bailey, who 

 courteously sent me some dried flowers, described it as a variety of 

 D. punctatum under the name Hamiltonianum, inProc. Linn. Soc. of 

 New South Wales, Vol. YI, page 140. He informs me that he 

 collected it at Stanthoipe and on Moreton Island, but makes the 

 same remark as to the colour being yellow. 



The purple form flowers in December and January ; the yellow 

 from November to January. Judging from the few flowers that 

 mature seed, I think it depends on insects for fertilisation. 



5. Thelymitra longifolia, Forst. 



Common all over the district. It flowers from September to 

 October. As it seldom opens its flowers and yet invariably bears 

 seed, it must be self-fertilised. 



6. Thelymitra. megcalyptra, R. D. F. 



Aust. Orch. Yol. I., Pt. 5, 1871. 



There are many varieties of colour in this flower ranging from pure 

 white, through pink to dark lilac. It is generally distributed 

 over the district, and from its large size is worthy of cultivation. 

 It flowers from September to October, opening about noon, and 

 remaining open later each day till fertilised, or till it withers. As 

 it seeds freely, it must be much visited by insects, but I have 

 never been able to observe the process of fertilisation taking place. 



7. Thelymitra nuda, R. Br. 



This is one of the plants I have not found. It has been 



collected by Dr. Woolls in this district. 

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