192 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



19. AUodus microica (Ell.) comb. nov. 

 Piiccinia microica Ellis, Jour. Myc. 7: 274. 1893. 

 Dicaeoma microicum Kuntze, Rev. Gen. 3'\- 469. 1898. 



Aecia hypophyllous, gregarious, in roundish or oval groups; 

 aeciospores globoid, 14-19^1 in diameter; wall i-i.5ju thick, 

 minutely vcrrucose. 



Telia chiefly hypophyllous, caulicolous, crowded in and about 

 the aecia or arising independently, rupturing by an apical pore, 

 frequently in circular groups, cinnamon-brown; teliospores terete, 

 13-19 by 27-42/1; wall light cinnamon-brown, about 2 jx thick, 

 smooth, the apical pores covered with hyaline papillae, making 

 the wall 5-7 IX thick; pedicel colorless, rarely as long as the spore. 



On Ammiaceae: 



Derijiga canadensis (L.) Kuntze {Cryptotaenia canadensis 



(L.) DC). 

 Type locality: Garrett Park, Maryland, on Sanictda (?) error 



for Deri?tga canadensis {Southworth, May 1890). 

 Distribution: Maryland to Iowa. 



Note. — Puccinia Cryptotaeniae Peck is probably a correlated 

 Dasyspora form. It has teliospores very similar to this species. 



20. AUodus Lindrothii (Syd.) comb. nov. 

 Puccinia Lindrothii Sydow; Lindr. Acta. Soc. Faun, et Fl. Fenn. 



22: 62. 1902. 

 Puccinia sphalerocondra Lindr. Acta. Soc. Faun, et Fl. Fenn. 



22: 63. 1902. 



Aecia chiefly hypophyllous, caulicolous, gregarious, in roundish 

 or oblong groups; aeciospores 18-24 by 23-32 n; wall 1.5-2 n 

 thick, finely vcrrucose. 



Telia chiefly hypophyllous, caulicolous, scattered, rarely con- 

 fluent, rather early naked, ruptured epidermis conspicuous, 

 chocolate-brown; teliospores broadly ellipsoid to oblong, 18-26 

 by 29-42 /i; wall chestnut-brown, 3-3.5 m thick, the apex rarely 

 thickened up to 5 ju, evenly covered with longitudinal rows of 

 small tubercles; pedicel colorless, rarely as long as the spore. 



On Ammiaceae: 



Drudeophytiini Ilartwegii (A. Gray) C. & R. ( Velaea Hart- 



wegii C. & R., Arracacia Hartwegii S. Wats.), and Velaea arguta 



(T. & G.) C. & R. (Deweya arguta T. & G.). 

 Type locality: Berkeley, California on Arracacia Hartwegii 



{Blasdale, April 23 and May 3, 1894). 



