226 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



Wettst. (P. graminis Pers.), whose telia are very common on grains 

 and other grasses. The secia have never been taken in America 

 upon wild species of barberry, unless this record by Schweinitz is 

 such an instance. In the Carolina list they are said to occur on 

 Berberis vulgaris " covering the mountains of Wilkes County." 

 Evidently Schweinitz sometime after collecting his specimen some- 

 where in the vicinity of Salem learned that the native Berberis in 

 the mountains near Salem, N. C, is B. canadensis, and his collec- 

 tion was later so labelled and so recorded in his North American list. 



There is in the herbarium of the Academy of Natural Sciences 

 of Philadelphia an ample and characteristic phanerogamic specimen 

 of B. canadensis from Salem, N. C, collected by Schweinitz, and 

 another from Statesville, N. C, collected by Gray, Sargent, Red- 

 field and Canby, making it certain that B. canadensis did occur as 

 stated. But comparing the mounted cryptogamic specimen, which 

 must certainly have been the original collection, it is easy to see that 

 it does not agree well with the phanerogamic specimen by Schwei- 

 nitz or the same species by others, as it has the ash-gray bark of B. 

 vulgaris, instead of the dark reddish-brown bark of B. canadensis. 



The evidence goes to show that although Schweinitz may have 

 observed the native barberry " covering the mountains," yet the rust 

 was " rather rare," and on Berberis vulgaris, as it has generally 

 been found to occur during the years that have followed, not only 

 in the Carolinas but throughout the eastern United States. There 

 is no reason to think that the rust will not as readily infect any 

 Berberis in its native state as it does the cultivated species, but up 

 to the present time there is no such authentic record. 



*2882. 72. C. A. grossulariatum, Lk. 162. Very frequent on various species 

 of Grossularia in the mountains of Pennsylvania. 



Represented by twenty leaves mounted loose in a packet, the 

 largest about 2 cm. across, showing a number of small groups of 

 secia, and by an empty packet labelled on the outside "iEcidium 

 grossulariat Mauchunk in Gros oxya," with an evident emendation 

 written within " et Mauch Chunk Pensylva. in Rib oxyacanth Lv." 



Except one greenish fragment, the leaves are all of a dark 

 brownish tint and similar in appearance. They may well be Grossu- 

 laria oxyacanthoidcs (L.) Mill. (Ribes oxyacanthoidcs L.). 



