226 The Botanical Gazette. [August, 



species of the genus did not already bear his name. The 

 name Puccinia mednsseoides is therefore proposed for it, 

 from the resemblance of the branched pedicel of the teleut- 

 ospores to that of Spegazzini's P. Medusa. 



Uromyces pcrigynius has an error in the description as 'ori- 

 ginally published in Journal of Mycology, v. p. n, to which 

 my attention has been directed by Mr. E. W. D. Hohvay. 

 The measurements of the teleutospores, as there given, should 



be multiplied by three, making the true dimensions 12-18X 

 24-30//. 



The teleutospores found upon the leaves do not, as a rule, 

 have the apex long and pointed, but more or less rounded, 

 and the spore correspondingly shorter. 



Dietel 7 demonstrated that Uromyces Caricis Peck, is the 

 uredo of a Puccinia, which he called P. Caricis-strictce D., 

 and remarked that no true Uromyces upon Carex is known. 

 A month afterward U. pcrigynius Halst. was published, and 

 it appears to be a true Uromyces. No mention in the original 

 description is made of the uredo form, but I have received 

 from Mr. E. W. D. Holway excellent material collected in 

 August, 1887, upon the leaves of Carcx pubescens, bearing 

 both uredo- and teleutosori. The uredospores are globose, 

 epispor.e thin and echinulate, 15-18/* in diameter, with occa- 

 sionally a spore measuring 22-28//. The uredospores possess 

 two or three lateral germ-pores, while the teleutospores have 

 a single terminal germ-pore. This pore is not easily demon- 

 strated in most cases, even with the use of sulphuric acid. 

 Any doubt of its presence, however, is put to rest by a speci- 

 men collected by the writer, in Indiana, upon a Carex that is 

 probably C. pubescens. It was found in May upon the leaves 

 of the preceding season's growth. Most of the teleutospores 

 in this specimen have the terminal pore distinctly open, from 

 having already germinated without dropping out of the sorus. 



Colcosporium Viburni was established upon the uredo form 

 alone. Teleutospores have since been gathered upon the 

 same host, V. Lent ago, at Racine, Wis., by J. J. Davis. The 

 son are hypophyllous. scattered, yellow; teleutospores cylin- 

 drical, or elongated clavate, three- or four-locular, smooth, 

 20-30x65-90//. 



Piu-cinia Cyperl n . sp. — Sori irregularly scattered upon 



effused brow n spots on the culms and under' surface of foliage 



Hed 



wigia, xxviii (1889), p. 22 



