Arthur and Kern : Peridermium 423 



patula 



M 



municated by E. W. D. Holway. 



On branches of Pinits oocarpa Schiede, hills near Guadalajara, 

 state of Jalisco, Mexico, June 22, 1893, C. G. Pringle. 



The type specimen consists of a lobulated, irregularly globose 

 gall, about 4 cm. in diameter, nearly surrounding a slender branch 

 only 8 mm. thick, and attached by a very narrow band of connect- 

 ing-tissue. The record on the packet says : u forming balls 2-3 

 inches in diam. on small branches ; very common/' 



14. Peridermium Cerebrum Peck, Bull. Buffalo 



Soc. 1 : 68. 1873 



deft 



1890. 



Aecidium gigantetim Mayr, Waldungen Nordam. 120. 1890. 



(Bot. Centr. 58: 149. 1894.) 

 Peridermium giganteum Tubeuf, Pflanzenkr. 429. 1895. 



deft 



1895. 



Aecidium Cerebrum Dietel, in Engler & Prantl, Pflanzenfam. 1 *** 

 79. 1897. 



0. Pycnia unknown. 



1. Aecia caulicolous, forming globoid swellings, 5-25 cm. 

 across, arranged in tortuous lines or cerebroid, at first orange- 

 yellow, bladdery, large ; peridia colorless, circumscissile, soon 

 falling away in flakes or sheets, about 2 cells thick, outer surface 

 smooth, inner verrucose, cells roundish, or irregularly compressed, 

 walls very thick, radially striate, lumen small ; aeciopores obovate, 

 17-23 by 25-32//, wall colorless, uniformly thick, 2.5-3.5//, 

 coarsely verrucose, with a smooth spot at base usually extending 

 up one side, tubercles somewhat deciduous. 



On branches of Pinus rigida Mill., Center, New York, May, 

 year?, /. A. Li 'nt tier (type specimen in herbarium N. Y. State Mu- 

 seum, Albany, N. Y.) ; Belleplain, New J 



(in Ellis, N. A. F. no. 1022). 



Jersey, May, 1882, /. 



Wash 



11, 1903, and April 24, 1905, C L. Shear; Glen Sligo, Maryland, 



May 5, 1905, P. L. Richer. 



On branches of Pinus divaricata (Ait.) Sudvv. {P. Banksiana 



