68 PROCEEDINGS OF THE [April, 1869. 



Donations to the Collection. 



Uredo Candida, Peksoon, Botrytis epiphylla. Link, and Aecidium 

 luminatum, Scmv. Presented hy W. Wragg Smith, Esq. 



Prof. J. McCrady exhibited a specimen of Bidhics sps. ? from 

 Florida. 



Mr. Smith made the following remarks on the Fungi presented 

 by him : 



Uredo Candida, Persoon. 



The specimens she-v\Ti at a previous meeting were upon Nasturtium tanace- 

 tifoUum, these appear upon CapseUa bursa-pastctjis, the ' ' Shepherd's Purse, " 

 chiefly iipon the rachis, continuously and completely enveloping it, sometimes 

 to the extent of three inches or more, and on the inferior surface, more espe- 

 cially, of the leaves, sparingly on the pods, which, however, shrivel up and 

 wither from its effects. The epidermis in this fungus is remarkable for its 

 white, shining, porcelain-like appearance. Upon the slightest contact, it dis- 

 charges a cloud of white dust which adheres, like wheat flour, to whatever it 

 touches. Collected April 18th, during a drought. 



Botrytis epiphylla, Link. {Schw. Syn. N. A. Fungi, No. 2645.) 



Collected Apiil 18th, during drought ; covering partially or totally the in- 

 ferior surfaces of leaves of Geranium CaroUnianum * with a cinereous-white 

 bloom, as it were. The opposite portions of the leaf exhibit, at the same time, 

 first, pale, yellowish, convex spots, which soon become reddish brown and pur- 

 ple, and the leaf begins to wither. Fertile flocci pellucid, septate, strangu- 

 late, short-branched towards their summits with heaps of spores at the apices 

 of the branches, which fly off at the slightest concussion and leave the flocci 

 naked. Spores of the same color as the flocci, irregular in shape and size, 

 ovoid, sub-cylindric-truncate, or angular, large, as if containing sporidia. 



-fficidium luminatum, Schw. {Syn. N. A. Fungi, No. 2887.) 



Common and prevalent, towards the close of April, upon the inferior surface 

 of leaves of Rubus trivialis, the ' ' low-bush blackberry, " ( always on leaves of 

 the same year. ) It covers the entire surface except the midrib and primary'' 

 veins, cm-ling up the leaves and attracting notice by its bright, tierj^ red ap- 

 pearance, as though the leaves were scorched by flames. Pseudo peridia at 

 first suboval, elongating, then confusedly coalescing, soon breaking up length- 



* Also on G. m-aculatwn. 



