Some Notes on the South African Erysiphaceae. 
241 
catis ; ascis 8-12, ovatis 45-50 x 20-28 /x, basi breviter pedicellatis, cur- 
vulis, 4-sporis ; sporidiis ellipsoideis hyalinis, 13-18 x 12-13 /j.. 
Hah. in foliis vivis Pterocarpi cerisei, Duivelskloof, Zoutpansberg 
Dist., Transvaal, 9/8/11; leg. E. M. Doidge (1805). 
U. Tectonae affinis. 
Uncinula sp. 
On leaves of Comhretum sp. 
Ledzee, Zoutpansberg Dist., 7/8/11 ; leg. E. M. Doidge 
(1793). 
Perithecia immature. 
Erijsiphe Polycjoni D.C. (Plate XXX.) 
On Acalypha sp. : 
Garstfontein, Pretoria Dist., 25/3/11 ; leg. Miss J. Erasmus. 
(1266). 
On Jatropha Zeyheri : 
Near Pietersburg, Zoutpansberg Dist., 20/3/11 ; leg. E. 
Thomsen (1286). 
Ehlanzeni, Umvoti Dist., Natal, 29/4/14; leg. E. M. Doidge- 
(8248). 
On Jatropha natalensis : 
Ladysmith, Natal, 26/1/12 ; leg. I. B. Pole Evans (2030). 
On Triumfetta trichocarpa : 
Muckleneuk, Pretoria, 13/4/12 ; leg. E. M. Doidge (2291). 
On host undetermined : 
Barberton, 21/3/11 ; leg. C. P. Lounsbury (1279). 
Oidial stage only : — 
? On Pisum sativum : 
Pretoria, February, 1907 ; leg. I. B. Pole Evans (269). 
? On Medicago denticulata : 
Constantia, CP., 12/0/9 (Oidium medicagineum Thuem.)^ 
(736). 
? On Pisum sativum : 
Potchefstroom, 20/4/12 ; leg. (2259). 
? On Cassia occidentalis : 
Lourenco Marques, 25/4/09 ; leg. C. W. Howard (674). 
Erysiphe cichoracearum D.C. 
No perithecia seen. 
On Cucurhita Pepo : 
Pretoria, 8/1/06; leg. J. Burtt-Davy (100). 
Pretoria, 28/1/04; leg. J. Burtt-Davy (180). 
Pretoria, 2/2/07 ; leg. I. B. Pole Evans (268). 
