Eumycetes. 329 



Orton, C. R. and J. F. Adams. Notes on Peridermium from 

 Pennsylvania. (Phytopathology. IV. p. 23 — 26. 1914.) 



The writers have thorough studied the relations between Cro- 

 nartium Comptoniae Arthur, occurring on Comptonia peregrina (L.) 

 Coult. and its aecidial stage, supposed by Clinton and subsequent 

 workers to be Peridennium pyrifornie Peck. The aecidial stage was 

 originally described from Pinus rigida Mill. and P. sylvestris L., but 

 was also found on P. austriaca Höss., P. echinata Mill., P. maritima 

 Poir., P. montana Mill., P. ponderosa Dougl., P. taeda L., and P. 

 virginiana Mill. But this form of Peridermium is not at all P. pyri- 

 forme Peck, though resembling in one feature. ßecause there has 

 not yet been given a name to the true Peridermium-iorm, connected 

 with Cronartium Comptoniae Arthur, the writers make the new 

 combination : Peridermium Comptoniae (Arthur) nov. comb. The real 

 P. pyriforme Peck was found to occur on Pinus pungens Mill. at 

 Charter Oak, Huntington County, Pa.; the alternate stage 

 of this fungus, predicted by Arthur and Kern to be Cronartium 

 Comandrae Peck, occurring on Comandra umbellata, was indeed 

 detected to be related with this species of Cronartium. The recently 

 published new species Peridermium Betheli Hedgc. and Long, should 

 according to the writers, properl}^ be referred to Peridermium pyri- 

 forme Peck, though there are certain differences between these 

 two species, especially Variation in size of spores, perhaps only 

 physiological variations associated with the particular host upon 

 which this species occurs. The wellknown species Peridermium aci- 

 colum Underw. and Earle, the uredinial stage of which is the 

 Coleosporium on Aster and Solidago, has been reported only upon 

 Pinus rigida Mill., but has now been coUected by the writers upon 

 P. pungens Mill. There seems to be no doubt as to its identity, as 

 several species of Solidago were found, heavily rusted with the 

 uredinial stage, growing immediately under and around the infected 

 pines. M. J. Sirks (Haarlem). 



Seifert, M., Agaricineae ceskeho Posumavi. Pfispevek k 



mykologickemu vyzkumu Cech. [Die Agaricaceen des 

 böhmischen Anteiles des Böhmerwaldes. Ein Beitrag 

 zur mykologischen Erforschung Böhmens]. (V. Jahresb. 

 Stadt. Realg3^mnasiums ßeraun f. 1914/15. Beraun, Verl. d. An- 

 stalt. 1915. p. 3—13. 8». In tschechischer Sprache.) 



Das böhmische Mittelgebirge hält der Verf. für ein Gebiet 

 Böhmens in dem die artenreichste Pilzflora existiert. Ursache ist 

 wohl die Wärme dieses Gebietes. Im Böhmer wald giebt es an- 



y 



derseits Unmassen von Pilzen, z.B. hätte man unter dem Tristo- 

 licnik 1912 von den Weiden und Wiesen Wagen wegtransportie- 

 ren können. Der Verf. führt in seinem 1. Beitrage (hier vorlie- 

 gend) keine neue Arten und Formen an, da er alles Zweifelhafte 

 erst später untersuchen wird. Es werden von den Agavicineen 229 

 Arten (in 38 Gattungen) aufgezählt und mit kritischen Diagnosen 

 versehen. Mit Gillet's Werke hat Verf. unangenehme Erfahrun- 

 gen erlitten. Er bedauert, dass Ricken in seinem grossen Pilz- 

 werke nicht alle mitteleuropäischen Agaricineen aufgenommen hat 

 da das Werk für das beste seiner Art erachtet wird. 



Matouschek (Wien). 



