Eumycetes. — Myxomycetes. — Bryoph} T ten. 519 



Bondarzew, A., Pilze gesammelt auf Stämmen verschie- 

 dener ßaumgattun gen in d er Forstversuch s-Oberfor- 

 sterei Brjansk. (Mitt. forstl. Versuchsw. Russland. XXVII. 56 

 pp. 4 Taf. 20 fig. im Texte. 1912.) 



Mit lateinischen Diagnosen beschreibt Verf. folgende neue 

 Arten: Poria luteo-grisea Boud. (auf Holz), Polyporns Winogradowi 

 Boud. (auf Pinus silvestris, habituell dem Polystictus lutescens Pers. 

 ähnlich), Thelephora Bondarsewii Karst, (der Th. terrestris Ehrh. 

 nächst verwandt). Ausserdem sammelte Verf. noch 115 Arten (zumeist 

 Polyporeen) im Gebiete. Viele interessante Daten sind im Verzeich- 

 nisse eingeflochten. Fomes fulvus hält er mit F. igniarius identisch. 

 Es zeigte sich bei sorgfältigen Detailstudien, dass fast für jedes 

 Genus der Bäume eine eigne Form dieses Pilzes zu gelten hat, die 

 man an makroskopischen Merkmalen erkennt. Solche Formen sind: 

 Ahn, Betidae, Tvemulae, Quercus (mit den grössten Sporen), Pruni. 

 Letztere Form ist mit F. fidvus ganz identisch. Durch das Experi- 

 ment wurden allerdings diese Formen noch nicht nachgewiesen. 



Matouschek (Wien,. 



Hörne. A. S.. Preliminary Note on Spongospora solani, 

 Brunch. (Ann. Bot. XXV. p. 272. 1911.) 



The extension of the parasite into new tissue occurs by some 

 of the myxamoebae passing into the daughter cells arising from the 

 originally infected tissue cells. Previous to the formation of spore- 

 balls, the amoeboid bodies form colonies or pseudo-plasmodia 

 grouped about the nucleus of the host cell. 



E. M. Wakeneid (Kew). 



Osborn, T. G. B„ Spongospora siebter ranea (Wallroth) Johnson. 

 (Ann. Bot. XXV. p. 271. [Prelim. Note] and p. 327—340. 1 pl. 1911.) 



The earliest stage observed consists of uninucleate myxamoebae, 

 which pass into the daughter cells formed on division of the host- 

 cell. The nuclei of the myxamoebae divide amitotically. Previous to 

 the formation of spores the amoebae fuse to form a Plasmodium, 

 in which the nuclei disappear, the protoplasm becoming filled with 

 chromidia. New nuclei are developped in fresh situations, and 

 fusion in pairs takes place, the fusion being followed by a condition 

 suggestive of synapsis. Two karyokinetic divisions follow one ano- 

 ther rapidly, leading to the formation of uninucleate spores, which 

 remain attached in masses known as spore-balls. 



Spongospora is regarded as a member of the Plasmodiophoraceae. 



E. M. Wakeneid (Kew). 



Armitage, E., Some Madeira Hepaticae. (Journ. Bot. XLVIII. 



p. 156—158. London 1910. 



The author gives a list of Hepaticae gathered in Madeira by 

 her early in 1909, and determined by Mr. S. M. Macvicar. It com- 

 prises 37 species and varieties, 14 of which are additions to the 

 flora of the island. Previous lists have been published by Mitten, 

 Schiffner and Luisier. A. Gepp. 



Cavers, F., The Inter-relationships on the Brxophyta. (New 

 Phytologist. X. p. 1—46, 84—86. Figs. in text. London 1911.) 



Having completed his aecount of the Hepaticae the author treats 



