353 , 



peculiar winging of the column, but the flowers are larger 

 and the tentacles longer and unclubbed as in longicaiida. 



C. Cobata, Fitz. 



Western Australia : Upper Kalgan River, Rogers, 

 22/9/19. 



This magnificent orchid was just beginning to flower on 

 the banks of the Kalgan. Fitzgerald has not exaggerated its 

 beauty; it is undoubtedly an extremely handsome species. 



C. dilatata, Br. 



Western Australia: Albany, Rogers, September, 1919; 

 near Perth, Mrs. W. E. Cooke, 13/9/06; Cape Leeuwin, Mr. 

 W. E. Cooke; Cut Hill, near York, Mr. L. O. Sargent, 

 September, 1905; Greenbushes, Dr. Pulleine, December, 1917. 



It is curious that this, the most definite of all the caudate 

 Caladenias and also one of the most common, should be given 

 the status of a mere variety in the Flora Australiensis. The 

 influence of Baron von Mueller is apparent here. It is 

 probably the best known of the "spiders," and throughout 

 its wide range in the Commonwealth is subject to extra- 

 ordinarily few variations. The writer once collected specimens 

 at Monarto (in South Australia) in which the lateral, sepals 

 were non-clavate; and he on one occasion received specimens 

 from Western Australia (Mr. O. H. Sargent) in which the 

 combing of the lateral lobes .of the labellum was absent. 

 Apart from teratological changes, these are the only 

 morphological variations that have come under his notice. 

 Chromatic variations are, however, occasionally met with. 

 These seem to be due to the omission of one of the colours 

 from a three-colour scheme, in a flower in which the three 

 primary colours — green, yellow, and red — are much in 

 evidence. The red is most frequently omitted, causing stripes 

 to vanish from the perianth, and conspicuous markings from 

 the labellum. This gives to the flower a strangely unfamiliar 

 appearance. 



(7. clavigera, Cunng. 

 Western Australia: Beverley, Dr. Steward, September, 

 1913 ; Tukurua, near Albany, Miss Bryce Maclntyre, 

 15/10/11. 



South Australia: Bordertown, Mrs. R. S. Rogers, 

 16/10/09. 



In Dr. Steward's specimens the dark veining in the 

 labellum was unusually Drominent for this species. 

 l2 



