﻿128 BOTANICAL GAZETTE [FEBRUARY 



tered ; paraphyses large, clavate, many, uniformly brown ; heads 

 26-35 ^y 40/^; stipe 40-65 by lo-i 2 /i, hyaline. Teleutosori 

 black-brown, from punctate to i""" in diameter, abundant; teleu- 

 tospore heads irregularly orbicular, dark brown, opaque, smooth, 

 85-120/A in diameter ; 5-6 spores in cross section ; cysts cushion- 

 shaped, connate with the pedicel, peripheral ; pedicel compound, 

 short, hyaline. 



On Indigofera densifolia : Oaxaca, Mexico, Oct. 18, 1899, no. 3661, 



Holway. 



On Indigofera sp.: Esclava, near City of Mexico, Oct. 3, 1896, Holway. 



Differs from P, epiphylla and P, similis in having paraphyses, and in 

 the numerous germ pores (15 or more). 



Pleoravenelia similis, n. sp, — Fig, 21. 



Sori subepidermal, on effused yellow spots, from punctate 

 to 0.5°'°' in diameter, on both sides of the leaves but especially 

 abundant on the upper surface and more or less confluent over 

 large areas. Uredosori few, ochraceous, small ; uredospores 



+ 



brown, walls thick and dark brown, spinulose, oval to sub- 

 globose and often ovate, 20-28 by 17-23 im\ germ pores 8-12, 

 irregularly scattered in or near the equatorial zone ; paraphyses 

 none. Teleutosori black-brown ; teleutospore heads smooth, 

 irregularly orbicular to oval, chestnut-brown, 68-135 /a, usual 

 size 100 /t; 6-8 spores in cross section; cysts hyaline, periph- 

 eral and decurrent into the pedicel ; pedicel hyaline, compound, 

 short. 



Holway 



Holway 



The uredospores of this species blacken very much under continued 

 boiling in lactic acid and glycerine solution, and shrink somewhat, while the 

 uredospores of P. epiphylla do not blacken or shrink. It also differs from 

 P. epiphylla in the number of germ pores, and in the brown uredospores. 



Pleoravenelia epiphylla (Schw.). — Fig. 18 



Sphaeria epiphylla Schw., Syn. Fung. Carol no. 130 p. 40. 1822; Sac- 

 cardo, Syll. Fung. 2: 399. 1883; Farlow, Host Index 30. 1888; Ellis and 

 Everhart, N. A. Pyren. 745. 1892. 



Ravenelia glandiiliformis Berk, and Curt., Cooke in Jour. Roy. Micr. Soc. 

 3:385- 1880; Grevillea 3:56. 1874; Parker, Proc. Amer. Acad." 21 1205- 



