332 



Mycologia 



named in honor of Isaji Ikeda, President of the Prefectural Agri- 

 cultural Society, under whom the investigations were made. 



Meliola citricola K. Hara sp. nov. in Shidzuoka-ken Nokwaiho 

 (Journ. Agric. Soc, Shidzuoka Prefecture) No. 263: 8-9, 1 

 pi., T. 8, viii, Aug., 1919. (Japanese.) 



Young hyphae filiform, delicate, branching, septate, colorless 

 or light colored, 2.5-3 /* across, mature hyphae thick, branching, 

 septate, constricted at septa, often catenulate and easily detached, 

 dark-brown, sometimes nucleate, 4-7 fi thick, detached cells 

 (chlamydospores) ellipsoid or subglobose, 8-15x4-7^; conidia 

 of Triposporium type astellate with 3-4 arms, arms thick at the 

 base, tapering towards the apex and ending in a sharp point, 2-4 

 septate, 40-60 /x, perithecia globose or depressed globose, 200- 

 230 fx across, wall naked, f ungoid-parenchymatous, carbonaceous, 

 brittle, dark-brown, cells 6-12 ^ across; ostiola apical, not pro- 

 jecting, with orbicular opening of 15-20^ across, asci obvate 

 globose or ellipsoid, rounded at the apex, pedicellate at the base, 

 thick walled, octosporous, aparaphysate, 40-70 x 30-40 /a, asco- 

 spores ellipsoid ovoid or subfusoid, tapering towards rounded 

 ends, straight or curved, 6-7 transversely septate, often with 

 longitudinal septa, hyaline, 28-45x7-12^. 



Epiphytic on leaves, branches and fruits of Citrus spp. 



This species appears mostly on the upper surface of leaves pro- 

 ducing black or dark gray irregular patches which finally enlarge 

 forming a thick incrustation all over the leaf surface. When 

 fully matured the surface becomes velvety and spotted with 

 minute black bodies and at this stage the black mass begins to 

 peel off from the substratum. 



Type locality : Shidzuoka-ken Agricultural Experiment Sta- 

 tion, Apr. 25, 1919, K. Hara. ' 



Illustrations: 3 figures (figs. 12-14) i n 1 black and white half- 

 tone plate, showing perithecia, asci and ascospores. 



It differs from Limacinia theae P. & H. Sydow & Butl. (Ann. 

 Mycol. 9 : 346) in the tapering and curved ascospores, intertwin- 

 ing hyphae without bristles, and in the absence of a particular 

 pycnidial form. Meliola penzigi Sacc. resembles the present 

 species in having naked perithecia, but the former is characterized 

 by colored biseriate ascospores having 3 transverse and 1-2 

 longitudinal septa, while the latter is distinguished by heaping 



