246 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



somewhat comoact, black-shining, at length the spores loosened, 

 minute, fuscous black. Possibly it is P. Polygoni-amphibii De- 

 Candolle — but very certainly specifically distinct from the pre- 

 ceding. 



Represented by a packet containing about ten fragments of 

 leaves, some nearly complete, showing an abundance of telia, in part 

 circinating about single uredinia. The packet is labelled " Puccinia 

 Polygoni coccinei concentricum omnino differt a P. Polyg virginici 

 et aliis Bethl." 



The leaves are broadly lanceolate, about 4 by 10 cm., and agree 

 with those of a phanerogamic specimen at the Philadelphia Academy 

 of Sciences, collected by Schweinitz, locality not given, and labelled 

 by him Polygonum coccineuni, which is now determined to be P. 

 emersum (Michx.) Britt. The rust is Puccinia Polygoni-amphibii, 

 as thought likely by Schweinitz, and differs from the preceding 

 species only as influenced by the host. 



♦2919. 15. P. bullata, L.V.S., Syn. Car. 501, Lk. n. 8. In Pennsylvania, found 



very large, two to even three inches, especially on stems of 



Vernonia noveboracensis. 

 (501. 16. [Puccinia] bullata Sz. 



P. very large, oblong, pulvinate, chestnut brown, surrounded by 

 epidermis, spores very dense, oval, bilocular, long pedicelled. 



Abnormal, erumpent from dried stem of various plants, e. g., 

 Ambrosia, Chenopodium. Very large, usually an inch long and two 

 lines thick, surrounded and often covered by the epidermis of the 

 plant. The peduncles of the spores are five times as long, spores 

 oval, short, the two cells equal.) 



Represented by three packets. The principal packet contains 

 four sections of stem, 3.5-5 cm. long, the largest being 8 mm. in 

 diameter, and is labelled " Puccinia bullata LvS Salem & Bethl in 

 Caulibus variis." The two duplicate packets, one with three, the 

 other two, similar fragments of stem, are labelled, the first " 3 Puc- 

 cinia bullata LvS," and the second " 5 Puccinia bullata LvS." Part 

 of the same original collection is in the Fries Herbarium at Upsala, 

 according to Lagerheim (1. c, p. 64), who renamed the species P. 

 longipcs, because the specific name had been antedated by Link 

 (Obs., 1815). 



