﻿1903] RAVEN ELT AS OF THE UNITED STATES 125 



The no. 252a of West American Fungi is very interesting, as the uredo- 

 spores are borne enlarge woody galls> which are densely covered with the 

 confluent sori ; the spores on these vary greatly in shape and size. The 

 galls, Mr. Griffiths writes me, are perennial, bearing successive crops of 

 uredospores year after year. The teleutospores are on the leaves of the same 

 trees that have the uredospore-bearing galls, but no teleutospores were found 

 on the galls. This gall-bearing stage is very similar to the aecidial stage of 

 Neoravenelia Holwayi, only in this case the spores are not in chains, but are 

 true uredospores and are intermixed with the characteristic paraphyses. The 

 galls also are larger and woody, while those of Neoravenelia Holwayi are 

 brittle, and shrink very much in drying, and are" annual. 



This species was originally reported as on Prosopis jtiliflora ; but this, Dr. 



David Griffiths writes me, was an error, as the host is Prosopis velutina 

 Wooton, 



Ravenflia APPENDicuLATA Lagerh. and Diet., Hedvvigia 33 ^ 

 47» 65. 1894 ; Saccardo, Syll. Fung. 11 : 210. 1895. — ^^S^ ^• 



Sori subepidermal, mainly on the under side of the leaves, 

 scattered. Uredosori cinnamon color, small; uredospores ful- 

 vous to hyaline, ovate, verrucose, 20-23 by 26-30 jU, germ pores 

 four, equatorial ; paraphyses clavate, stout ; heads evenl}^ brown, 

 17-24 by 29-30 /u. ; pedicel hyaline, short, 26-33 by 7/^- Teleuto- 

 sori small, black ; teleutospore heads irregularly orbicular, chest- 

 nut-brown, 65-90 /x in diameter, appendaged ; 4-5 spores in 

 cross section, 18-20 by 25-30/^, each with a long (8-12 by 5 /x) 

 fulvous appendage which is branched at the apex ; cysts 

 hyaline, peripheral, pendent ; pedicel compound, hyaline, short, 

 deciduous. 



On Phyllanthus galeottinus : Cuernavaca, Mexico, Sept. 15,1899; also 

 Guadalajara, Mexico, Oct. 12, 1896, Holway. 



On Phyllanthtis sp. : Ecuador, prov. Chimborazo, Puenti de Chimbo, Aug., 

 1 891, G,v. Lager heim, 



Ravenelia mexicana Transchel, Dietel in Hedwigia 33: 37^. 

 1894. — Fig, 25. 



Sori breaking forth between the cuticle and the epidermal 

 cells, scattered, on both sides of the leaves, very small, fulvous, 

 surrounded by the ruptured cuticle. Uredospores intermixed 

 with teleutospores (rare in specimens examined), ovate to 

 spheroid, fulvous, echinulate ; germ pores 4 (?), equatorial, 

 walls thin, 18-20 by 23-25 /i; paraphyses in separate sori, 



