326 



Mycologia 



black spots round in shape. Such spots are solitary or run to- 

 gether to form warts of irregular outline. The dying out of the 

 diseased portion is rather slow, occurring two or three years after 

 the infection. The surrounding area of stromata often develops 

 a greenish color which looks attractive in comparison with pink 

 stromatic bodies. 



Suggestions for control: (i) Diseased branches should be re- 

 moved and destroyed by fire; (2) infected areas on trunks should 

 be peeled off and disinfected with grafting wax or a similar sub- 

 stance; (3) to prevent the disease the woody part of the tree 

 should be washed with Bordeaux mixture. 



Japanese name of the disease: Chaju no Samehada-byo (Shark- 

 skin disease of the tea-plant). 



Illustration (Fig. 7, on p. 16) : One half-tone text figure show- 

 ing asci, paraphyses and ascospores (one germinating). 



Ascochyta Theae K. Hara sp. nov. in Chagyokai (Tea Jour- 

 nal) 14 10 : 13-14. T. 8, x, October, 1919. (Japanese.) 

 Pycnidia punctiform, globose or depressed-globose, 80-120 /*, 

 wall membranaceous, consisting of dark-brown carbonaceous po- 

 lygonal cells 5-10 fx in diam. ; ostiola apical, even or papillate, open- 

 ing simple, 10-12 ^ across; pycnospores ellipsoid, cylindric or 

 subovoid, both ends rounded or truncate, uniseptate, dividing into 

 homogenous or slightly unequal locules, provided with a large oil 

 globule in each locule, not constricted at the septum, hyaline, 

 7~ 10 x 3-5-4-5 /*■• 



Parasitic on the leaves of Thea sinensis. 



Type locality: Shid/Aioka-ken Abe-gun Okawa-mura, October 

 24, 1918. (K. Hara.) 



Found occurring on tea leaves infected by Exobasidium reticn- 

 latum. * 



Illustration : One half-tone text figure showing pycnospores. 

 (Fig. 8, on p. 14.) 



Valsa Theae K. Hara sp. nov. in Chagyokai (Tea Journal) 

 14 11 : 15-16. T. 8, xi, November, 1919. (Japanese.) 

 Stromata scattered, at first immersed, later erumpent, black, 

 punctiform to the naked eye, conical, apex projecting, black, typi- 

 cally Valsa-like; perithecia annular, 5-10 or more on one stroma, 



