344 



ACIANTHUS. 



A. exsertus, Br. 

 The usual colour of this orchid is a dusky purplish-red 

 or purplish-brown. The writer has collected specimens on 

 Kangaroo Island, South Australia, which were a bright 

 emerald green. 



Eeiochilus. 

 E. scaher, Lindl. 

 AVestern Australia: plentiful in the Albany district, in 

 sandy soil and swamps, Rogers, September, 1919; Bayswater 

 and Muresk, Mrs. W. E. Cooke, 11/8/07; Mundijong, Dr. 

 Stoward, July, 1913; Perth, Dr. J. B. Cleland, September, 

 1906; Diamond Tree School, near Jarnadup, Miss I. Knox- 

 Peden; York, O. H. Sargent, September, 1907. 



E. dilatatus, Lindl. 



Western Australia : Cut Hill, near York, O. H. Sargent, 

 27/5/06; Tukurua, near Albany, Miss Bryce Maclntyre, 

 3/4/12; Busselton, Dr. Stoward, November (?), 1912. 



This plant varies much in respect to its leaf which is 

 sometimes reduced to a small acute bract and in other 

 specimens is distinctly ovate (25 cm. x 1'5 cm.) or ovate- 

 oblong; also as to degree of hairiness, sometimes quite 

 glabrous, at others moderately hirsute. It varies also as to 

 the shape of labellum which is sometimes much shorter than 

 the claw, sometimes almost equal to it in length; sometimes 

 with the two diameters of the lamina nearly equal, and again 

 with the lamina relatively long when compared with its 

 breadth. Frequently it has only two or three flowers and 

 Sargent has recorded one in which he counted thirteen 

 flowers. 



All these variations are to be found in plants collected 

 from the same group, and even in flowers on the same raceme 

 variations in the labellum are to be observed. The writer 

 has never seen any specimens of Eriochilus which he could 

 definitely label E. mnltiflorus, Lindl. It is doubtful 

 whether this species should be separated from E . dildtatus on 

 the characters assigned to it by Lindley and Bentham. 



Lyperanthus. 

 L, nigricans, Br. 

 Western Australia: widely distributed throughout the 

 State. It blooms in September. 



A pure white specimen of this species was found at Mount 

 Barker, Western Australia. There were several flowers in 

 the raceme without the suggestion of another colour. It was 



