184 DECADES OP MAINE FUNGI. 



Spores of two orders ; 



1. Spherical, \ ., , 



2. Wedge-shaped, compact J Mdampsora. 



Uredo, Lev. 



Stroma composed of little irregular cells forming a lentiform disc, whose sur- 

 face is covered with many layers of cells, each of which encloses a spore. 

 Spores simple, always without any appendage. 



Uredo Fotentillarum, D. C. Spots yellowish ; sori subrotund or oval, 

 bullate, aggregate, open, confluent ; spores sub-globose, sub-coherent, orange. 



On various Rosacea; (Westbrook E. C. B. New York, TV. W. D.) 

 (Schweinitz, Syn. Car. No. 461. Fung. Am.Bor. No. 2834. Lea, Plants of Cincinnati. 

 p. 71. Ravenel, Fung. Car. Exsic. ii. No. 97.) 



Uredo Filicum, Desm. Spots yellowish, sori subrotund, bullate, scattered 

 and agregate, on the under surface ; epidermis at length bursting ; spores sub- 

 globose, yellow. 



On Ferns. (Scarboro', E. C. B.) r 



(Schweinitz, Fung. Am. Bor. No. 2836. Ravenel, Fung. Car. Exsic. iv. No. 97.) 



I have received Uredo solidaginis Schw. from New York, and Newport, 

 Rhode Island, but not at present from Maine.* 



» Uromtces, Lev. 



Spores unilocular, attached permanently to a decided peduncle of greater or 

 less length. 



Uromyces apiculosa, Lev. Spots yellow or brown. Sori 

 sub-rotund, scattered, surrounded by the ruptured epider- 

 mis ; spores ovoid, brown, shortly pedunculate. 



On leaves of various plants, (Peak's Island, E. C. B.) 



( Uredo apiculosum. Schweinitz, Syn. Car. No. 478. Fung. Am. Bor. No. 2844.) 



Uromyces triquetra, Cooke. 



Spots claret-colored ; Sori small, scattered, hypogenous, sur- 

 rounded by the remains of the ruptured epidermis. Spores 

 angular, often three sided. 



On leaves of Hypericum, (Scarboro, Westbrook, E. C. BJ 



Whether this is the same as the species described by 

 Schweinitz under the name of Uredo Hyperici is somewhat un- 

 certain, since his specimens are recorded as occurring on the 

 stems, forming elevated bullate sori, and the present is confined to the leaves, 

 and the sori are not bullate. Neither of thdm are the yellow Uredo Hyperi- 

 corum, D. C, so common in Britain. 



Melamfsora, Cast. 



Spores of two orders. Summer spores globose or oval, yellow. Winter 

 spores crowded into a dense compact mass, with or without a covering, wedge- 

 shaped. 

 ♦Found by Mr. C. B. Fuller at Brunswick, Maine. 





