324 



Mycologia 



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

 nal) 14 7 : 14-15. T. 8, vii, July, 1919. (Japanese.) 

 Pycnidia scattered, globose or depressed-globose, 100-150 p in 

 diam., wall parenchymatous, composed of dark brown polygonal 

 cells 4-8 ix in diam. ; ostiola even or warty, opening round, 

 15-20 /n across; pycnospores elongate-cylindrical or sub-clavate, 

 both ends rounded, 6-11-septate, hyaline, 18-35 x 4~5 f 1 5 pedicels 

 of pycnospores short, arising from the base of pycnidial chamber, 

 4-6 x 2-2.5 H- 



Saprophytic on the trunks of Thea sinensis. 

 Type locality: Shidzuoka-ken Iwara-gun Ejiri-cho, Nov. 24, 

 1918. (K. Hara.) 



Illustrations : One half-tone plate showing diseased spots, section 

 of a pycnidium, pycnospores and pedicels (Figs. 13-16). 



Leptosphaeria Hottai K. Hara sp. nov. in Chagyokai (Tea 

 Journal) 14 9 : 14-15. T. 8, ix, Sept., 1919. (Japanese.) 



Leptosphaeria Hottai K. Hara nom, subnud. in Byochu-gai 

 Zasshi (Journal Plant Prot.) 6 4 : 37. T. 8, iv, April, 1918. 

 (Japanese.) 



Spots orbicular or irregular, large, brown, with greasy luster, 

 later darker with minutely crowded dots of perithecia; perithecia 

 superficial, nearly always covered by epidermis, globose or de- 

 pressed-globose, 350-500 ix in diameter, wall carbonaceous, black, 

 thick, especially so at the place touching the host epidermis so as to 

 show more or less clipeus-form, ostiolate at the apex; opening of 

 ostiola round, 30-45 /x across ; asci clavate or cylindric, apex 

 round, base short pedicellate, 60-70 x 8-10 p, paraphysate, octo- 

 sporous ; paraphyses filiform, considerably longer than the asci, 

 usually simple, hyaline, 1— 1.5 p> across; ascospores biseriate or 

 obliquely tri-seriate, ellipsoid, oblong-ovoid or fusoid, at first uni- 

 cellular and 4-nucleate, later 3-septate with one-sided middle 

 septum, constricted, flavescent, 12-18 x 4.5-5.5 jx. 



Parasitic on the trunks of Thea sinensis. 



Type localities: Ejiri, Hikuma, Mitsuke and Takabe in Shi- 

 dzuoka Prefecture. 



The shape and size of the ascospores resemble Leptosphaeria 

 Coniothyrium forma Theae, but the shape of the perithecia differ 

 greatly from this species, so a different name is given. 



Japanese name: Kuroazabyo (black spot disease). 



