536 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Pleurotus ostreatus with a black stalk, found on a dead trunk of Ricinus 

 communis. 



Cryptogamic Flora of Presburg.* — This district of Hungary has 

 been well worked by J. A. Baumler as regards fungi. A feature of 

 the present contribution is the local geographical distribution of certain 

 parasites. 479 genera and 1641 species are recorded, a few of which 

 are new. 



Polyporaceae of North America.! — W. A. Murril creates a new 

 genus Pyropolyporus to replace the genus Phellinus established by 

 Quelet, and including Polyporus igniarius, P. fulvus, P. conchatus, 

 and P. salicinus. Murril follows on Quelet's lines and gives a list of 

 eighteen Pyropolyporei, a number of which are new. He gives detailed 

 descriptions and critical notes on the various plants, specimens of which 

 he has examined from different national herbaria. He finds that P. 

 salicinus is but a different form of P. conchatus. Both are found 

 growing together on the same hosts. 



American Mycology .% — Francis Bubak describes Stamnaria herjeda- 

 lensis, hitherto considered a variety of S. Eauiseti, and Cercospora Keller- 

 mani, both from Ohio. 



A new species,§ Cephalosporium dendroides E. and K., also from 

 Ohio, is described by Kellerman, with figures of the fungus. 



The sixth fascicle || of Ohio fungi has been issued, and critical 

 notes and descriptions of many of the species included are given by 

 Kellerman. 



Geo. F. Atkinson 1 has been examining species of Colostoma. He 

 gives a series of notes on the plants and records one new to science, 

 G. microsporum, from Tennessee. 



Frederic E. Clements** describes a considerable number of new 

 genera and species of Pyrenomycetes and Discomycetes from various 

 localities in the United States. The new genera are Psilothecium, akin 

 to Patinella, but varying in the form of the paraphyses and the bright 

 coloration ; Ophioglcca, also one of the PatellariaceEe, with filiform 

 septate spores ; Scytopczis, similar to Urnula, but without a stalk ; and 

 Heteroplegma with a sessile fleshy apothecium, differing from allied 

 genera in the form of the hypothecium. 



Charles H. Peck ft describes eighteen new species, Basidiomycetes and 

 Ascomycetes. He describes one new genus Mitruliopsis related to 

 Mitrula, but with filiform spores. 



A. P. Morgan$| gives a list of 128 species of Discomycetes from the 

 Miami Yalley, Ohio. There are a number of new forms, some of which 

 have been determined by the author, some by Massee, and others by 

 Massee and Morgan. These are fully described. When the plant is 

 already known the names and synonyms alone are given. 



* Beitr. Kryptogamen flora Presburg. Kom. iv. Pilze. Presburg, 1902. See also 

 Centralbl. Bakt., x. (1903) pp. 220-1. 



f Bull. Torrey Bot. Club, xxx. (1903) pp. 109-20. 



j Journ. Mycbl., lxv. (1903) pp. 1-3. § Tom. cit., p. 5. 



|| Tom. cit., pp. 17-24. 1 Tom. cit., pp. 14-7. 



** Bull. Torrey Bot. Club, xxx. (1903) pp. 83-94. 

 tt Tom. cit., pp. 95-101. Xt Journ. Mycol., viii. (1902) pp. 179-92. 



