PAPERS GIVING RUSTS OF NORTH AMERICA. 241 



urecHnia and tclia, the spores being those of Uromyccs Jufici-effiisi 

 Syd. The packet is labelled " 2 Puccinia Slriola Beth," the " 2 " in- 

 dicating^ that the original collection had been divided into numbered 

 portions, of which no. _' only had been retained. 



2907. 3. P. AruiidinaricX, L.v.S., Syn. Car. 4S7, Lk. p. 68 in a note. Very 



good species, also on Miegia ( Arundinaria) cultivated in the 



Bartram Gardens, Pliiladelphia. 

 (487. 2. [Puccinia] Arundinarire Sz. 



P. rather large, elevated, pulvinate (not surrounded by the epi- 

 dermis), blackish-brown, spores oblong, bilocular, pedicel long. 



Rather rare on leaves of Arundinaria. Of the size of a mouse 

 dropping, beautifully scattered over the leaves. Cells of the spores 

 equal to each other, color under a lens yellow, pedicels longer than 

 the spore, radiately divergent, white, pellucid.) 



Represented by an original packet containing a part of a leaf, i 

 by 5 cm., which bears three telial sori in a row, two being empty of 

 spores. The single sorus with spores is prominent, oblong, and dark 

 brown or blackish. The packet is labelled " Puccinia Arundinaria; 

 LvS Salem." 



The rust still bears the name given it by Schweinitz. Its aecial 

 form has not yet been discovered. 



*29o8. 4. P. punctum, Lk. n. 3, on Carex and Scirpus, Bethlehem. 



Represented by two packets, one containing Carcx and the other 

 Scirpus, both rusted, together with a duplicate packet of the latter. 

 One packet has a dozen or more, rather soft, crumpled leaves with 

 a few stems, all heavily rusted, labelled " Puccinia graminis var. 

 hortensis Beth," and afterward graminis crossed out and ** Punc- 

 tum " substituted. The rust proves to be the telial stage of Puc- 

 cinia Grossidarice (Schum.) Lagerh., and on some species of Carex. 



Another packet contains twenty-five or more pieces of leaves, 

 3-9 cm. long, of what appears to be Scirpus cypcrinus (L.) Kunth, 

 abundantly rusted, labelled on the inside " Puccinia Caricicola LvS 

 Beth," with " Puccinia punctum Lk " added later, and on the out- 

 side " Puccinia punctum Beth in Caricibus." The rust is that of 

 Puccinia angustata Peck, being the telial stage, only a few uredinio- 

 spores with their two supereqnatorial pores being found. 



