78 PROCEEDINGS OP THE AMERICAN ACADEMY 



threads which may be paraphyses, although they are possibly merely 

 the long stalks which have already borue uredo spores. 



The Uromyces on Brizopyrum occurs from New Jersey to Glouces- 

 ter, Mass., and is apparently common. It has been considered a form 

 of U. Dactylidis Otth., a species with regard to the limits of which I 

 can form no very clear idea, as the descriptions given by European 

 writers do not entirely accord with authentic specimens. In its typical 

 condition U. Dactylidis has sori which are long covered by the epider- 

 mis, and there are numerous capitate paraphyses. Gapitularia Gra- 

 minis Niessl in Rabh. Fung. Eur. no. 1191 is regarded as merely a 

 form of U. Dactylidis, but in this form the sori are naked and promi- 

 nent, and the paraphyses not plain. Our form on Brizopyrum ap- 

 proaches closely to the 1191 of Fung. Europ., and it is perhaps not 

 very plain why, if U. Dactylidis includes the specimen in Rabenhorst, 

 it should not be extended so as also to include our form. Such, 

 however, is not the opinion of European botanists who have examined 

 American specimens, and on that account the fungus was distributed 

 as U. Pechianus Farlow, as it was first detected by Peck, by whom it 

 was considered to be identical with U. Graminis Cooke. As it is, the 

 distinction between U. Peckianus and U. Dactylidis lies in the fact 

 that in the former the sori are naked, the teleutospores are longer- 

 stalked, have a thicker wall, which is of nearly uniform thickness 

 throughout, not being denser at the apex, which is always obtuse, and 

 not pointed. The paraphyses are filiform and mixed with the teleuto- 

 spores, and not arranged in a ring around the sorus. 



U. Peckianus Farlow. Sori oblong or linear, naked and becoming 

 convex. Uredo spores short-stalked, yellowish brown, echinulate, 

 globose, 18-21 a in diameter. Teleutospores mixed with filiform para- 

 physes, dark brown, long-stalked, oval or elliptic, smooth, 22-34/a by 

 19-23/A, narrowed at base, apex obtuse, cell wall scarcely if at all 

 thickened at apex. 



On Brizopyrum spicatum. New Jersey to Gloucester, Mass. 

 Autumn. 



Nos. 1067 and lOGS. Uromyces Martinii Farlow. With regard 

 to the a-cidium, no. 1098, I at first supposed that it immediately pre- 

 ceded or accompanied the Uromyces; but that not being the case, it 

 is hasty to assume a connection between the two, and, without wish- 

 ing to irive a name, it is distributed for further study by mycologists. 

 The name U. Martinii is given to 10G7 because, although there is a 

 Uromyces Melardherce Cooke on Melanthera Brownii from Natal 

 described in Grevillea, June, 1882, the description there given of the 



