June, 1920J MORPHOLOGY, ETC., OF FUNGI, ETC. 365 



2481. Anonymous [ B. (). Dodge]. Index to American mycological literature. Mycologia 

 11:227-230. 1919. 



2482. Brick, C. Die Schwarzfleckenkrankheiten der Tomatenfriichte durch Phoma de- 

 structive Plowr. [Black-spot disease of tomato fruits caused by Phoma destructiva.j Zeitschr. 

 Pflanzenkrh. 29: 20-26. 1 fig. 1919.— See Bot. Absts. 3, Entry 2578. 



2483. Doidge, E. M. The diagnostic characters of some superficial fungi. South African 

 Jour. Sci. 15: 364-368. 1919. — The group Hemisphaeriales as defined by Theisscn is divided 

 into 3 families, the Microtliyriaceae, H emisphaeriaceae and the Trichopeltaceae. The struc- 

 ture of the thyriothecia is the basis of division into families, and spore and mycelial characters 

 are used as generic distinction. Meliola peltata, a fungus occurring on Podocarpus sp., forms 

 a compact disc which recalls the vegetative structure of the Trichopeltaceae ; another form of 

 exceptional interest is the recently described genus Meliolaster, which resembles the genus 

 Meliola except in the form of the thyriothecium. — E. M. Doidge. 



2484. Doidge, E. M. South African Perisporiaceae. II. Revisional notes. Trans. Roy. 

 Soc. South Africa 7: 193-197. S fig. 1919.— The nomenclature of certain species described 

 in a previous paper (Trans. Roy. Soc. of South Africa 5: 713-750. Plates 57-66. 1917) is 

 revised on evidence obtained from examination of fresh collections. The fungus described 

 as Meliola manca Ell. & Mart, is Meliola puiggarii Speg. M. lorta is redescribed, and two new 

 species, M. scabra and Perisporina melioliicola are described. — E. M. Doidge. 



2485. Fitzpatrick, Harry Morton. Rostronitschkia, a new genus of Pyrenomycetes. 

 Mycologia 11: 163-167. 11 pi. 1919. — A fungus parasitic on the leaves of Gesneria albiflora 

 in Porto Rico and Jamaica is discussed. This fungus is a member of the family Cucurbi- 

 tariaceae of the Sphaeriales and possesses characters not found in related fungi of the genera 

 Nitschkia, Eutype and Coelosphaeria. It is considered as the type of a new genus, Rostro- 

 nitschkia, and as a new species R. nervincola. Nitschkia nervincola Rehm in litt. is cited as a 

 synonym. — H. R. Rosen. 



2486. Garrett, A. O. Smuts and rusts of Utah. III. Mycologia 11: 202-215. 1919.— 

 Five smuts and fifty-nine rusts are listed. — H. R. Rosen. 



2487. Grove, W. B. Mycological notes.— IV. Jour. Botany 57:206-210. 1919.— I. Phyllo- 

 sticta and Phleospora. The species assigned to the form genus Phleospora have long been the 

 subject of controversy as to whether there is a true pyenidium. The difficulty is. frequently 

 due to the presence of the pyenidium in early stages and its absence in later stages of the 

 same plants. Spores produced by the same hymenium may in certain cases differ as to the 

 pyenidia produced. Therefore the same little black dot on a leaf may be placed in Phyllo- 

 sticta, Phleospora, Septogloeum, or even in Leptothyrium or Septoria, depending on its age 

 at the moment of observation. Phleospora Oxyacanthae Wallr. when closely examined shows 

 intermixed with pyenidia which accord with the description of that species others indistin- 

 guishable from those of Phyllosticta monogyna Allesch. except in having slightly smaller spores. 

 It is as though the same pyenidium at first produced Phyllosticta spores and afterward began 

 to produce the larger Phleospora spores which burst the pyenidium open. All the steps be- 

 tween can be traced in sections. But the spores of the Phyllosticta stage vary continuously 

 in size, as for instance in P. monogyna, which therefore is very possibly a later stage of Phyllo- 

 sticta crataegicola Sacc. A great deal of the confusion in the Coelomycetes is due to the fail- 

 ure to recognize the variation in size, color and complexity of the spore in different stages of 

 the same fungus. For instance, all Diplodia spores pass through the stages (1) hyaline and 

 continuous (2) pale-brown and continuous (3) darker brown and septate, with often increase 

 in size. In the first stage they have been called Macrophoyna, in the second Sphaeropsis, and 

 in the third Diplodia. Thus Dr. Ellis' specimen of Macrophoma Fraxini gives also Sphaer- 

 opsis and Diplodia spores in the same pyenidia: and Phoma piriastri Lev., Sphaeropsis Ellisii 

 Sacc, and Diplodia Pinastri Grove are all growth states of the same plant. — The condition 



