324 University of California Publications in Botany [Vol. lo 



Radula plicata Mitten 



Plate 96 

 Flora N. Z., II, p. 154. 

 Stephani, Sp. Hep., vol. IV, p. 214, 1910. 



Habitat. — Mamaku, North Island, New Zealand ; coll. W. A. 

 Setchell, April 22, 1904, no. 8 and no. 28. 



Ohscrvations. — A very remarkable and distinct species. In addi- 

 tion to the perianth being plicate, a unique character in this genus 

 so far as I know, the leaves on their antical (upper) margin are 

 abruptly and acutely truncate, 



Stephani remarks under R. plicata (Sp. Hep., vol. IV, p. 214, 

 1910) "that the folding of the perianth is usually not noticeable, 

 and only in the old branches to be observed, evidently an indication 

 of their coming decay. ' ' This is not so, for in the numerous perianths 

 on Setchell 's specimens they are of different stages of growth and the 

 plication is always to be seen ; in fact the ridges are really narrow 

 wings, 1, 2 and 3 cells wide. 



Its nearest ally is B. physoloba Mont., a species which Stephani 

 does not think belongs to the New Zealand flora. The specimens he 

 received from there, collected by Beckett, are so poor that the ques- 

 tion is undecided. 



There are specimens (3074) in the Manchester Museum named 

 B. physoloba Mont. (I do not know by whom), collected by Sinclair 

 in New Zealand, which are B. plicata, but they are without perianths. 

 Also, there is a specimen named B. physoloba (Jung, flavifolia Tayl.) 

 from Cape Horn (20569) which represents a distinct species as recog- 

 nized by Taylor, Jour, of Bot., p. 476, 1844, the acute leaves at once 

 distinguishing it. 



Through the kindness of Professor Dismier I have had the 

 opportunity of examining the original specimen of B. physoloba of 

 Montague. It is a different species from that collected by Weymouth 

 in Tasmania and determined by Rodway, the lobes of the leaves being 

 rounder, with the lobules having an acute angle. 



The Badvla plicata listed by Rodway in his Hepaticae of Tas- 

 mania, with the mouth of the perianth fimbriate, must belong to 

 another species. 



T have the pleasure of being able to add drawings from the orig- 

 inal specimens of Badula physoloba ]\Iont. and Badula flavifolia 

 (Tayl.), (cf. plates 97 and 98). 



