DECADES OP MAINE FUNGI. 



183 



Puccinia Pyrolae, Cooke. 

 Uredo-form — Unknown . 



h 



Septate-form — Spots large, pallid, orbicular ; sori round, often 

 / confluent and then elongated, concentric, bullate and compact, 

 nearly black, surrounded by the epidermis ; spores ovate or el- 

 liptic, scarcely constricted, peduncles elongated, clear umber 

 brown, upper cell darkest. 



On leaves and petioles of Pyrola, (Cape Elizabeth, E. C. B.) 



This is a most distinct and unmistakable species, and apparent- 

 ly undescribed. The external appearance, habit and color, is 

 very much that of Puccinia Umbilici, Guep. 



Puccinia Xanthii, Schw. 

 Uredo-form. — Uncertain. 



Septate form — Spots orbicular, pallid, on the opposite surface yellowish 

 brown with a pallid margin. Sori compact, large, concentric, confluent, or- 

 bicular, forming a blackish brown, convex mass. Spores elliptic, slightly 

 constricted, brownish; peduncles elongated. 



On leaves of lister. (WestbrookE. C. B.) On leaves of Xanthium strumarium. 

 (Schweinitz.) 

 (Schweinitz Syn. Car. 500. Fung. Am. Bor. No. 2927.) 



Podisoma, Link. 



Peduncles extremely long, agglutinated by gelatine into a common stem, 

 spreading out above into a clavariaeform mass. Spores mostly uniseptate. 



Gymnosporangium is represented in South Carolina, and besides Podisoma'- 

 Juniperi a distinct form which has been named Podisoma macropus is known 

 from the same State. Only the true Podisoma Juniperi has yet been found in 

 Maine. 



Podisoma Juniperi, Er. 



Orange, clavariaeform, somewhat branched ; stroma simple ; 

 spores very long, lanceolate, filled with elliptic granules. 



On living branches of Juniper, (Cape Elizabeth, E. C. B.) 

 (Schwz. Fung. Am. No. 3095.) 



The spores are veiy much longer than in the form named 

 Podisoma macropus, Schw., which has been referred to this species. 

 They are longer than in British specimens, which again are longer 

 than in P. macropus. The figure in this, as in all the species fig- 

 ured, are from American specimens. 



C^OMACEI. 



Spores of one order; 



Simple and free ; 



Produced in separate cells, 



Superficial, yellow or brown — Uredo. 

 Not inclosed in separate cells — Lecythea. 

 Stipitate ; 



With permanent peduncles, — Uromyces. 



