No. 1, August, 1920] MORPHOLOGY AND TAXONOMY OF PI NGI, ETC. 93 



090. Tsuji, R. On the morphology and the systematic position of Cercosporella persica 

 Sacc. and Clasterosporium degenerans Syd. (Japanese.) Ann. Phytopath. Soc. Japan l 2 : 

 23-35. Fig. 1-2. 1919. — A fungus found on the leaves of a peach tree in Japan proved to be 

 identical with Cercosporella persica Sacc. collected on a similar host and determined by W. I r, 

 Farlow in the United States. This fungus is closely related to Clasterosporium degt torn*, 

 Syd. on the leaves of Primus Mumc and Armeniaca, in that its conidiophores arc produced 

 on creeping hyphae emerging from stomatal openings, and also in color, shape, and mode of 

 septation of their conidia, etc. He comes to the conclusion that these two species should 

 be included under the same genus, and the name Clasterosporium persicum (Sacc.) Tsuji is 

 proposed for the first-named species. — T. Matsumoto. 



691. Vuillemin, Paul. Remarques sur les mycetomes. Hommage a la memoire de R. 

 Jolly. [Remarks on mycetomas. Tribute to the memory of R. Jolly.] Arch. M6d. Exp. 

 Anat. Path. Paris 28: 446-451. 1919. — Gives a discussion of the different types of mycetomes 

 and of the fungi producing them, in particular Madurella mycetomi (Laveran) Brumpt. — E. A . 

 Bessey 



'&. 



692. Waksman, Selman A. Cultural studies of species of Actinomyces. Soil Sci. 8: 

 71-215. PI. 1-4. 1919— See Bot. Absts. 5, Entry 998. 



693. Watson, W. The bryophytes and lichens of calcareous soil. Jour. Ecol. 6: 189-19S. 

 1918. — Gives lists of calciphile and calcifuge species, arranged by habitats as they occur in 

 England; also a list of "indifferent" species. [See Bot. Absts. 4, Entry 309.] — L. W. Riddle. 



694. Weimer, J. L. Variations in Pleurage curvicolla (Wint.) Kuntze. Amer. Jour. Bot. 

 6: 406-409. 1919. — Variation in this species was studied to determine the taxonomic value 

 of certain characters. The number of spores in the ascus is apparently 128, 256, or 512. The 

 spore size in the strain studied is approximately the same as that recorded for other strains 

 of the species, but the size of the perithecia is somewhat more variable. Secondary spore 

 appendages, supposed to be a constant taxonomic character for the species, were not demon- 

 strated. — E. W. Sinnott. 



695. Weimer, J. L. Some observations on the spore discharge of Pleurage curvicolla 

 (Wint.) Kuntze. Amer. Jour. Bot. 7: 75-77. 1920. — Author reports that this species is able to 

 discharge its spores to a height of 45 cm. above the fruiting surface of the culture, probably higher 

 than can any other Ascomycete yet studied. This is due in part to the fact that the spore mass 

 discharged is rather large and heavy, comprising some 500 spores and a quantity of gelatinous 

 substance. Experiments show that the spore discharge is strongly and positively heliotropic, 

 but that reflected light seems to exert a stronger stimulus than does direct light. — E. W. 

 Sinnott. 



696. Weston, William H. Repeated zoospore emergence in Dictyuchus. Bot. Gaz. 

 68: 287-296. 1 pi., 1 fig. Oct., 1919. — The non-sexual reproduction of the fungus studied 

 shows it to be a species of Dictyuchus, but exact determination was impossible, because sexual 

 reproduction was not observed. Dictyuchxis differs from all other Saprolegniaceae, save per- 

 haps Aplanes, in that during spore formation the walls of adjacent spores unite with one 

 another and with the enveloping sporangium membrane to form a polygonally chambered 

 indehiscent structure. The zoospores which emerge from the sporangiospores come to rest 

 and encyst as usual, but from these encysted spores ("cystospores") in turn laterally biciliate 

 zoospores may emerge. This repeated emergence of laterally biciliate zoospores has not pre- 

 viously been reported in any of the Saprolegniaceae. — H. C. Couies. 



697. Wheldon, J. A. Llanberis lichens. Jour. Botany 58: 11-15. 1920. — A list of 

 lichens compiled in the district around Llanberis in August, 1919. Many lichens known to 

 occur in this district were not seen, while some rare species were observed. Few corticole 

 species were collected as most of the time was spent above tree line. The arrangement is 



