﻿124 BOTANICAL GAZETTE [February 



cells, on both sides of the leaves. Uredosori ochre color, often 

 confluent in effused patches, 0.5-1'°'" in diameter; uredospores 

 oval to spheroid, densely echinulate, light brown, 17-20 by 20- 

 30/A, usual size 18 by 25 /i; germ pores many, scattered; paraphy- 

 ses rare, capitate-clavate, much attenuated toward base, hyaline, 



10-15 by 30-50 /i. Teleutosori black-brown, small, scattered; 



teleutospore heads chestnut-brown, papillate, irregularly orbic- 



ular, 50-120 by 30-40 /x thick; 5-7 spores in cross section, 



each with a single hyaline \2-"j 11) papilla; cysts hyaline, 

 globose, 13-15/^ in diameter, pendent, beneath the entire head; 

 pedicel short, hyaline, deciduous, compound. 



On Cassia Lindkebneriana : San Marcos, Texas, Nov. iq, 1901 ; Marble 

 Falls, Texas, March 30, 1901 ; Austin, Texas, Aug. 24, T901, no. 1026; 

 Austin, Texas, Oct. 5, 1901, leg. A. M, Ferguson, 



On Cassia multiflora\ Oaxaca, Mexico, Oct. 18, 1899, no. 3675 (type) 

 Holway. 



Ravenelia arizonica Ell. and Ev., Bull. Torr. Bot. Club 22: 

 363-364. 1895 ; Saccardo Syll. Fung. 14:367. 1899. — Fig. 16, 



Sori subepidermal, on both sides of the leaves but mainly on 

 the under side. Uredosori chestnut-brown, firm, scattered, 0-5"' 

 J mm bfoatj^ oval to orbicular ; uredospores obovate to oblong- 

 ovate, spinulose, light brown, apex often darker, 17-20 by 28- 

 36/i; germ pores 4, equatorial; paraphyses of two kinds, nor- 

 mal form capitate, heads dark brown, walls thick : pedicel usually 

 hyaline, somewhat attenuated toward base; heads 20-23/1 in 

 diameter, pedicels 30-60 by 7/1; the other form cystoid, walls 

 thin, clavate-fusiform with apex nipple-shaped, slightly fulvous, 

 rare. Teleutosori dark brown, orbicular, 80-100/1 in diameter, 

 spinous ; 6-8 spores in cross section, tips intensely brown for 

 6/1, 10-15 by 25-33/1, each crowned with a curved hyaline spine 

 4-6 /t long; cysts hyaline, spheroid in a dense cluster beneath 

 the head, pendent, swelling and bursting In water; pedicel 

 compound, hyaline, short, deciduous. 



On Prosopis jtiliflora : Abilene, Texas, 1900, no. 1481, Ell. and Ev. Fung. 

 Col. continued (issued as R. decidua (Pk) Holw.). 



W. 



w. 



\ 



J 



Fung. 



