14 FETCH : 



Sydow ; though Berkeley and Broome's spore measurement, 

 10 (x, was evidently taken from it, as they state that the 

 specimen on Ixora parvifolia, No. 464, differed in the shortly 

 fusiform, granulated sporidia, 12*5-15 ^ long. The corre- 

 sponding specimen in Herb. Peradeniya is chiefly immature, 

 but contains a few ripe asci, 75 X 10 [l, with eUiptic, hyaUne 

 spores, 8-12 X 5-7 [k. The spores are rounded at the ends, 

 not acute, as stated by Berkeley and Broome. This species 

 on Croton appears to agree with Phyllachora Tragix (B. & C.) 

 Sacc. 



It is to be noted that the Croton species was also included by 

 Berkeley and Broome under Dothidea rhytismoides Corda in 

 Fungi of Ceylon, No. 1153. The Thwaites's numbers, host 

 names, and herbarium specimens of the Ceylon Dothideales 

 have been confused, in a most bewildering fashion. 



232. — Dothidea rhytismoides Corda. 



Under this name Berkeley and Broome cited. Thwaites 520, 

 and 423 in part, stating that the host plant was Hugonia 

 Mystax (Jour. Linn. Soc, XIV., p. 134). In the Supplement 

 {loc. cit., XV., p. 86) they again recorded D. rhytismoides Cda., 

 citing Thwaites 1141. The latter specimen was subsequently 

 transferred to Phyllachora by Cooke, in Grevillea, XIII., p. 63, 

 as Phyllachora infectoria, on leaves of Ficus infectoria. 



Thwaites 520 was on Croton Klotzschianus Thw. It had 

 already been attributed to Dothidea demersa Cda. in Fungi of 

 Ceylon, No. 1152 (see above). Thwaites 423 is on Ficus 

 parasitica, and is Dothidea microcenta B. & Br. The specimen 

 on Hugonia Mystax is Thwaites 521, a number which Berkeley 

 and Broome did not cite. Probably 520 is an error for 521. 

 This latter specimen has been named Phyllachora Hugonise 

 by Theissen and Sydow (Aim. Myc, XIII., p. 512). Thwaites 

 1141, named Phyllachora infectoria by Cooke, has been trans- 

 ferred by Theissen and Sydow to their new genus Catacauma, 

 as Catacauma infectorium (Cooke) Theiss. & Syd. ; part of the 

 leaf which constitutes Cooke's type specimen is included in 

 Herb. Kew under Phyllachora rhytismoides. 



Dothidea rhytismoides must consequently be deleted from 

 the Ceylon list. 



