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A SYNOPSIS OF THE SPECIES OF LOTONONIS, Eckl. and Zeyh., 
and PLEIOSPOBA, Harv. 
By K. a. Dummer. 
(Keceived November 13, 1912.) 
(Communicated by H. H. W. Pearson.) 
(Eead April, 1913.) 
(Plate XIX.) 
Since Harvey's excellent systematic account in the Flora (Flora 
Capensis, IE. pp. 47-66) of the genera here alluded to, a considerable 
bulk of undetermined material appertaining to these groups has accumu- 
lated, which has suggested the expediency of the following paper. This 
aims at a segregation of all known species and their identification by the 
aid of appended keys. The material examined has been particularly rich 
in type specimens, especially at Kew, which has considerably facilitated 
the work, while that of the British Museum and the Edinburgh Botanic 
Gardens, has augmented the list of collectors' numbers and incidentally 
assisted in clearing up several critical points. 
Dr. H. Schinz, of the University of Ziirich, has courteously forwarded 
the material relating to these genera for examination, among which I have 
to record several species new to science. Through the kindness of Dr. 
H. Dixon, of Trinity College, I was permitted to examine Harvey's type of 
L. Wrightii, which has confirmed my suspicions as to its correct status 
and suggested its transference to Hallia. Dr. O. Juel, of Upsala, with his 
customary courtesy, has forwarded information regarding Thunberg's 
types, and after a critical examination of a flower of Lebeckia densa, 
Thunberg, which species was referred by Harvey to Lotononis, I am unable 
to accept the latter author's view and follow Thunberg in his conception 
of that species. 
To the authorities of the institutions here alluded to, my thanks are 
due for access to specimens and the hterature thereto, nor can I fail 
