PAPERS GIVING RUSTS OF NORTH AMERICA. 257 



ance of an upper cell separated from the lower by a transverse 

 septum. In reality the teliospores are one-celled, and the rust be- 

 longs under the genus Uromyces, as U. Lcspedescc-procimihentis 

 (.Schw.) M. A. Curt. 



2941. Z7. P. Lespedezse violacese, L.v.S., Sj'n. Car. 498, Lk. p. 83, much more 



frequent on L. violacea than on L. polystachya, also in New 



Jersey. 

 (498. 13. [Puccinia] Lespedezse polystachyae Sz. 



P. rather small, punctiform, surrounded by the epidermis, black 

 shining, spores oblong, attenuate at both ends, somewhat bilocular. 



Frequent on the lower surface of the leaves. — Surrounded by 

 the epidermis. Spores more elongate and attenuate into the pedicel, 

 septum scarcely visible, it appears vaguely now near the apex of 

 the spore, again lower. Color of the spores, under a lens, yellow.) 



Represented by neither specimen nor original packet. The rust 

 is an abundant one, and is considered b}^ all recent mycologists to be 

 identical with the preceding. Uromyces Lespedezce-procumhentis 

 (Schw.) Curt., and to be both on L. Jiirta (L.) Hornem. (L. poly- 

 stachya Michx.) and L. violacea ( L.) Pers. 



The elaborate but elusive description of this species, when taken 

 in connection with that of the preceding number, illustrates the im- 

 perfect equipment possessed by Schweinitz and others of his time 

 for the study of microfungi, and leaves us astonished at the large 

 measure of success attained. The present number also illustrates 

 the futility of long and cumbersome specific names for correctly 

 designacing a species. Before a decade had passed Schweinitz said 

 that the rust which he specifically limited to Lespedesa polystachya 

 was found by him "much more frequent on L. violacea." How 

 much better it would have been to have designated this rust as P. 

 affinis, or by some such simple appellation, and avoided bestowing a 

 name that would be burdensome to other mycologists. 



*2942. 38. P. Phaseoli trilobi, L.v.S., on leaves of P. trilobus sent from New 

 York. Appears related to P. fabse. 

 P. sori minute, hypophyllous, partly covered by the epidermis. 

 Spores black, spots none. 



Represented by an empty packet, w^hich is labelled " Puccinia 

 Phaseoli Newyk in Phaseolo trilobo." There appears to be no 



