﻿Ii8 BOTANICAL GAZETTE [February 



on the leaf stems and on the branches, forming somewhat swollen 

 places of 4-6"""" in diameter, chestnut-brown ; teleutospore heads 

 orbicular, smooth, light brown, 60-85 by 33-40/^ thick; 4-6 

 spores in cross section, each 16-22^ broad; cysts firm, persist- 

 ent, flask-shaped, hyaline, 15-18)^1 in diameter, hanging in a 

 cluster around the pedicel, beneath the entire head; pedicel 

 stout, persistent, compound, fulvous, 95-150 by 20-25 /i*. 



On Cassia absus : Tequila, Mexico, Sept. 29, 1893. Leg. Pringle, 



Ravenelia siliquae, n. sp. — Fig. 7. 



Sori breaking forth between the cuticle and the epidermal 

 cells. Uredosori orbicular, large, 1-4™''' in diameter, cinnamon- 

 brown, prominently surrounded by the ruptured cuticle, scattered 

 or more or less confluent; uredospores fulvous, epispore densely 

 verrucose, oblong-oval to ovate-fusiform, 13-17 by 20-3 3 /*, 

 usual size 16 by 30/^; germ pores 8, in two rows of 4 each, 

 one row on either side of the equatorial zone ; paraphyses 

 very rare, hyaline or slightly fulvous at the apex, clavate, 43 

 by 7/x. 



On pods of Acacia farnesiana : Etla, Oaxaca, Mexico, Oct. 25, i8gg, 

 no. 3841, Holway. Mr, Holway writes that this species was found only on 

 the pods, the leaves being free from the rust. The peculiar position of the 

 germ pores of the uredospores is such a marked character that the writer did 

 not hesitate to establish a new species, as no other known Ravenelia has this 

 character. No teleutospores were present in the material examined, 



Ravenelia versatilis (Peck) Dietel, Hedwigia 33:38-42, 

 64.368-369. 1894; Saccardo, Syll. Fung. II : 210-21 1. 1895. 



Fig^3^ 



Uromyces versatilis Peck, Box. Gaz. 7:56. 1882 ; Saccardo, Syll. Fung. 

 7:582-583. 1888. 



Ravenelia decidua (Pk.) Holway, Dietel in Hedwigia 33: 370. 1894 ; Sac- 

 cardo, Syll. Fung. 11:211. 1895. 



Uromyces deciduus Peck, Reg. Rept. 45 : 25. 1891. 



Sori breaking forth between the cuticle and the epidermal 

 cells, on both sides of the leaves. Uredosori small, ochreous, 

 thickly covering the leaves and often the leaf stems and brancfties ; 

 upper half of spores brown and somewhat thickened at apex, 

 with spinules less prominent than those of the lower part; lower 

 half fulvous to sub-hyaline, rugose-echinulate; elliptical to ellip- 



r 



