68 ,2-27 



Mycologia 



Spores from Type Collections of Puccinia albiperidia and P. uniporula 



EACH SORUS GIVEN SEPARATELY. 



Taking first the two columns of teliospores in the above table, 

 it may be assumed that when a few only of either one- or two- 

 celled teliospores occur in a sorus they are to be considered as in- 

 cidental, possibly mesosporic. We may exclude from our present 

 consideration four sori (8 to 11 incl.) from the type of P. albi- 

 peridia, as belonging to another species, Uromyces iiniporulus, in 

 termixed on the same leaf blades. 



Of the remaining seven sori taken from the type of P. albiper- 

 idia, two of them (numbers 4 and 5) show a few urediniospores 

 with one basal pore, and one sorus (number 6) shows one uredin- 

 iospore with apparently three equatorial pores, while all others 

 give no urediniospores whose pores could be made out with cer- 

 tainty. 



Of the five sori (12 to 16 incl.) taken from the type of P. uni- 

 porula all show a number of urediniospores with one basal pore, 

 and in addition three of the sori. (numbers 12, 13, and 16) show 

 urediniospores with three equatorial pores, as well as a number 

 of spores whose pores could not be located. It is curious to note 

 that in this type material of P. uniporula about one tenth of the 

 urediniospores possess equatorial pores, and that these spores are 

 intermixed in the same sori with the one-pored spores. 



So far as the morphological evidence goes, there appears to be 



