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G. R. BISBY 
SylL Fung. 7: 608. 1888, and by others, as the name for this species 
here considered as Puccinia Epilohii-tetragoni. The original Puccinia 
Epilobii of DeCandolle refers, however, to the short-cycled species 
still known under that name. Saccardo in Syll. Fung. 17: 245. 1905, 
corrects the earlier mistake. Kuntze has made the combination 
Dicaeoma Epilobii Rev. Gen. 3^: 469. 1898, which name may be con- 
sidered to be a synonym of the short-cycled Puccinia Epilobii DC. 
The names Uredo Epilobii DC. and Caeoma Epilobii Link, included 
in the synon3^my, have been particularly confused in the literature. 
Both these names have been used in the North American Flora as 
synonyms of Pucciniastrum pustulatum (Pers.) Dietel, and both have 
been used by the Sydows (Monog. Ured.) as synonyms both of 
Pucciniastrum pustulatum and Puccinia Epilobii-tetragoni. Uredo 
Epilobii is described by DeCandolle to take the place of his Uredo 
vagans var. Epilobii-tetragoni, which latter name he includes as a 
synonym. DeCandolle further says in his description that this 
Uredo is often found associated with Aecidium Epilobii, and he 
contrasts Uredo Epilobii with Uredo pustulata and Puccinia Epilobii. 
It is evident that this name in question refers to Puccinia Epilobii- 
tetragoni and not to a Pucciniastrum. Caeoma Epilobii is given by 
Link as having for synonyms Uredo Epilobii DC. and Uredo vagans 
Epilobii DC. (meaning Uredo vagans Epilobii-tetragoni, since he gives 
as reference Fl. Fr. 2: 228). Link briefly describes JCaeoma Epilobii 
as possessing ruptured epidermis surrounding, and as occurring upon 
Epilobium tetragonum. This name very evidently must be con- 
sidered to be a synonym of Puccinia Epilobii-tetragoni. 
Caeoma Epilobiatum is given by Link with Aeadium Epilobii DC, 
as a synonym. This Caeoma name has been used by the Sydows and 
others as a synonym of Puccinia Epilobii-tetragoni. It has also been 
used as a synonym of Aecidium Circaeae Cesati and Mont., as in- 
dicated previously in this paper. Link describes his species as 
''maculis oblitteratis," with a pseudoperidium, and orange or yellow 
spores, and as inhabiting leaves of Epilobium and Circaea in Europe. 
It would seem that, as Klebahn and others indicate, this name of 
Link may be used as a synonym of Aecidium Circaeae in part, and that 
it might refer also in part to Puccinia Epilobii-tetragoni. 
The majority of the synonyms refer to descriptions made when 
this rust, with apparent differences, was found upon a new host, and 
to combinations made from these names. It is only when a large 
