Eumycetes. 365 



Tatsache, dass sie in den nebenliegenden Ländern überall gefun- 

 den wurden. Und der Befund der letzten Monaten, T. aestivum, 

 bestätigt ebenfalls die Behauptungen der erwähnten Forscher. 



Jar. Stuchlik. 



Kunkel, O., The production of a promycelium by the 

 aecidiospores of Caeonia nitens Burrill. (Bull. Torrey Bot. 

 Club. XL. p. 361—366. 1 Fig. 1913,) 



The author gives the following summary of his results. 



The aecidiospores of Caeotna nitens on germination regularly 

 produce a promycelium. 



This promycelium normally consists of five cells. The stalk cell 

 contains no nucleus, but the other four cells contain one nucleus each. 



Fach uninucleated cell bears a sporidium on a sterigma. 



These sporidia germinate immediately by producing either a 

 secondary sporidium or a germ tube. 



The production of a promycelium by these aecidiospores suggests 

 that Caeonia nitens is a short-cycled rust and casts doubt on the 

 connection supposed to exist between this fungus and Puccinia 

 Pe Chiana. 



Caeonia nitens is the only rust of the ca^owrt-type, having aeci- 

 diospores that are known to produce a prom5^ce]ium. The other rusts 

 having aecidiospores that are known to function as teleutospores, 

 beiong" to the one genus Endophyllum. Jongmans. 



Levine, NJ., Studies in the cytology of the Hymenomyce- 

 tes, especially the Boleti. (Bull. Torrey Bot. Club. XL. p. 

 137—181. PI. 4— S. 1913.) 



The iirst part of this paper consists of a review of the literature 

 and the results obtained by other investigators. The writers own 

 results are summarized as follows: 



1. Spores of Pholiota praecox germinated in maltbeef extract at 

 room temperature produce multinucleated germ tubes. The mycelia 

 in cultures forty-eight hours old are still composed of long multi- 

 nucleated cells. In cultures three days old both uninucleated and 

 binucleated cells are found 



2. The mycelia of Collybia veliitipes, Polyporus adustus, P. betu- 

 linus, P. destructor , P. versicolor, and Coniophora cerebella propaga- 

 ted from old cultures are made up of long series of binucleated 

 cells. Clamp connections, hyphal anastomoses, and the so-called 

 protoplasmic connections are numerous in all the mycelia. 



3. The cells of the mature stipe of Boletus granulatus are all 

 multinucleated, while the cells of the ring are binucleated. The 

 cells of the flesh and trama of B. gyaniilatus are binucleated. The 

 cells of the subhymenium are binucleated in all the species of Bo- 

 letus studied. 



4. The cystidia of the Boleti occur either singly or in small 

 Clusters forming gelatinous granules. In B granulatus these cushion- 

 shaped granules are abundant at the mouths of the pores and scat- 

 tered over the hymenium. The individual cj^stidium is binucleated. 

 It is club-shaped and is deeply seated in the hymenium. The cystidia 

 of the Boleti appear to be in some sense glandulär in their functions. 



5. The nuclear phenomena in the basidium are t^^pical in all 

 the species of Boletus examined. Fusion of the two primary nuclei 



