i8o 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



Teliospore wall, 1-1.5 m or less. 



Teliospores small, less than 35 n long. 

 Apex rarely thickened up to 3 /x. 

 Apex 5-7 n thick. 

 Teliospores of medium size, averaging 35-45 fi long. 

 Apex less than 7 n thick, telia permanently 



covered. 

 Apex 6-10 M thick, telia tardily naked. 

 Apex 7-12 M thick, telia rather early naked. 

 Teliospores large, more than 45 ii long. 

 Apex 3-5 n thick. 

 Apex 5-8 n thick. 

 Apex 7-16 M thick. 

 Teliospore wall 1.5-2.5 fj. thick. 



Teliospores small, not usually more than 40 /z long. 

 Apex 5-7 n thick. 

 Apex 7-10 IX thick. 

 Teliospores of medium size, not over 60 /x long. 

 Apex not thickened. 



Telia rather long covered by epidermis. 

 Telia early naked. 

 Apex 7-12 /.I thick. 



Teliospores slender, 15-21 n in width. 

 Teliospores broader, up to 26 /i in width. 



Teliospore pedicel colorless or nearly so. 

 Teliospore pedicel chestnut-brown. 

 Teliospores large, 45-80 ;u long. 

 Teliospore wall 3-5 n thick. 



Teliospore wall not over 3.5 n thick (on Gramineae). 

 Teliospore wall up to 5 ^u thick. 



Teliospore pedicel persistent, stout (on Am- 



miaceae). 

 Teliospore pedicel fugaceous, fragile (on La- 

 biateae). 

 Teliospore wall 5-7 n thick. 



47. A. suhcircinata. 

 44. A. tenuis. 



10. A. opposita. 



40. A. ambigua. 



45. A. gnaphaliata. 



9. A. gigantispora. 



46. A. Desmanthodii. 

 43. A. Batesiana. 



19. A. microica. 

 13. A. consitnilis. 



24. A. melanconioides. 



25. A. Swertiae. 



15. A. Ludwigiae. 



41. A. commulala. 

 32. A. Douglasii. 

 II. A. areolata. 



I. A. graminclla. 



16. A. imperspicua. 



34. A. mellifera. 

 7. A. Dichelostemmae. 



I. Allodus graminella (Speg.) Arth. Result. Sci. Congr. Bot. 



Vienne 345. 1906 

 Aecidium graminellum Speg. Anal. Soc. Ci. Argent. 12: 77. 



1881. 

 Puccinia graminella D. & H. Erythea 3: 80. 1895. 



Aecia cpiphyllous, scattered, often along the veins; aeciospores 

 20-25 by 20-30 )Li; wall 3-4 n thick, 



Telia epiphyllous, scattered or crowded about the aecia, often 

 lineally confluent along the veins, early naked, ruptured epidermis 

 conspicuous, pulverulent; teliospores broadly ellii:)S()id, 22-28 by 

 35~55 M. rounded at both ends; wall dark chestnut-brown, 3-5/1 

 thick, the apex 7-9 m thick, smooth; pedicel colorless, rather stout, 

 up to 100 jj. long. 



