834 RECORD OF CURRENT RESEARCHES RELATING TO 



niese there is no further division into sections. In the Hyphomycetese, 

 the largest of the three divisions, there are four sections, the Muce- 

 dincss, Dematiese, Didymosporfe, and Tubercularieas, with numerous sub- 

 divisions. 214 genera are described, among them the following new 

 to science : — 



Dendrophoma Sacc. Perithecia calva Phomce, sed basidia ramulosa 

 vel denticulata pleiospora. Dothiorella Sacc. Stroma basilare ; peri- 

 thecia botryose aggregata ; sporaj oblongse. SeptaglcBum Sacc. Conidia 

 oblonga, 2-pluriseptata, hyalina (est Gloeosporium conidiis plarisep- 

 tatis). Ovularia Sacc. Biophila ; hyphae subsimplices, erectfe, api- 

 cem versus conidia globosa vel ovoidea gerentes. Pyricularia Sacc. 

 Hyphas biogente subsimplices ; conidia obclavato-pyriformia, 2-pluri- 

 septata, solitarie acrogena. Cercosporella Sacc. Candida, biogena ; 

 hyphse simplices vel ramulosfe ; conidia vermicularia, pluriseptata 

 (est Cercospora mucedinea). Dactylaria ■ Sacc. Saprophila ; hyphee 

 fertiles erectee, simplices, apice capitulum conidiorum gerentes ; 

 conidia fusoidea vel clavulata, 2-pluriseptata. Heterobotrys Sacc. 

 Conidia catenulata vel simul glomerulata, sphaeroidea, in eodera 

 mycelio majora et minora, fuliginea et hyalina ; hyphse a conidiis vix 

 distinctfe. Ceratophorum Sacc. Conidia phyllogena fusoidea vel 

 cyliudracea, sursum incurvata et pallidiora. Stigmina Sacc. Conidia 

 ovoidea vel oblonga, 2-pluriseptata, in acervulos aggregata, phyllo- 

 gena, basidiis brevibus fulta. Gonatobotryum Sacc. Hyphse fuscfe, sim- 

 plices, erectfe, hinc inde noduloso-inflatae, ibique denticulato-sporigerse ; 

 conidia ovoidea. 3Iesohofrys Sacc. HyphaB Chcetopsidis ; conidia 

 ovoidea. Harpographiiim Sacc. Conidia falciformia, continua, hyalina. 

 Cosmariospora Sacc. Conidia constricto-didyma, verruculosa, hyphis 

 tenuissimis ramulosis varie inserta ; sporodochium verruciforme, super- 

 ficiale, botryoideo-lobatum. Tiiberculina Sacc. Conidia in basidiis 

 crassiusculis brevibus simplicibus vel parce ramulosis acrogena, glo- 

 bulosa; sporodochium plano-pulvinatum. Heliscus Sacc. Sporodo- 

 chium applanatum ; conidia cylindracea, apice clavi ad instar poly- 

 gono-capitata, mediocria, basidiis parce divisis nixa. Strumella Sacc. 

 Sporodochium verruciforme, ex hyphis varie ramosis conidiisque ex 

 ovoideo polymorphis varie adnatis compositum. 



Mode of Escape of the Spores from the Asci in Ascomycetes.* 

 — This point has been carefully investigated by W. Zopf, with 

 the following results: — In Sordaria the asci project through the 

 ostiolum of the pcrithecium, in consequence of elongating very consi- 

 derably, and then first buret. In all the Ascomycetes in which the 

 spores are forcibly ejected, they are connected together by various 

 contrivances, sometimes by appendages, sometimes by a gelatinous 

 envelope. These collections of spores are frequently attached to the 

 apex of the ascus in various ways, a point of importance in their ejec- 

 tion. Heliotropism j)lays its part not only in the entire perithecium, 

 but also in the separate asci. The Pyrenomycetos, which have no 

 ostiolum, often exhibit contriva,nces for facilitating the opening of the 



* 'SB. Ges. natuif. Freimde Berlin,' 1880, p. 29. See ' Bot. Ceutralbl.,' i. 

 (1880) p. 323. 



