﻿ii6 BOTANICAL GAZETTE [February 



4. Cysts peripheral ; paraphyses many, clavate-capitate - - R.texana 

 Cysts beneath. entire head; paraphyses few, hypha-like - R, Loytgiana 

 Cysts beneath entire head ; paraphyses none ; pedicel stout, ' 



fulvous 



7?. indica ? 



5. Sori sub-epidermal germ pores 4 ; cysts pendent many "^. Holwayi, 



6, Uredospores brown, with a row of 4 germ pores on either side 



of equator 



R, siliquae 



Uredospores fulvous, base hyaline to semi-hyaline, 4 germ pores 



in equator and 4 in a row near base - - - ^. versatilis 



7. Sori sub-cuticular; heads chestnut brown - - 7?. Farlowiana 

 Sori sub-epidermal ; heads black, opaque - - - - 7?. opaca 



8. Uredospore germ pores many, scattered . • - - . 

 Uredospore germ pores 4, equatorial - - - - - 

 Uredospore germ pores 8, in two rows on either side of 



9 



12 



equator 



R, siliqtiae 



10 



g. Sori sub-cuticular; cysts peripheral ------ 



Sori sub-cuticular ; cysts not peripheral - - - - - - 11 



Sori sub-epidermal ; cysts coherent; III heads densely warty. 



R, verrucosa 



10. Cysts pendent ; heads minutely verrucosa - - - /?. expansa 



Cysts pendent ; heads several with long (5-8 iu)bro\vn papillae 



on each spore - - - - - - 7?. miniosae-sensiiivae 



1 1, Stipe long, persistent, fulvous ; papillae few, scattered - R, cassiaecola 

 Stipe short, hyaline ; papillae few, scattered - - - R. mesillana 

 Stipe short, hyaline ; III heads with several short papillae to 



each spore 



7?. fragrans 



Stipe short, hyaline ; III with one (2-7 /x) papilla to each spore. 



R. spintdosa 



12, Sori sub-epidermal ; each spore of III heads armed with a stout 



appendage which is branched at apex - - R, appendiculata 



Sori sub-epidermal; each spore of III heads armed with a 



curved hyaline spine (1-6 /i) - . . - - R,artzonicd 



Sori sub-cuticular ; cysts not pendent, peripheral ; uredospores 



18-20 by 22-25 /I 



R, mexicana 



Sori sub-cuticular; cysts pendent, peripheral; uredospores 



15-18 by 35-40 M 



R, leticaenae 



Ravenelia texana Ell. and Galw., Jour. Mycol. 6:2.83. 1 890 ; 

 Jennings, Bull. Tex. Agr. Exp. Sta. 9: 1890. — Fig. /. 



Ravenelia texensis Dietel, Hedwigia 34 : 42-43, 63-64. 1895; Saccardo 

 Syll. Fung. 11 : 210. 1895. 



Sori breaking forth between the cuticle and the epidermal 

 cells on both sides of the leaves, and sparingly on the leaf stems, 



s See Neoravenelia Holwayi, 



