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NORTH AMERICAN FLORA [VOLUME 7 
Host belonging to family Berberidaceae. 9, A. Podophylli. 
Host belonging to family Brassicaceae. 
Apex of teliospore-wall not thickened. 10. A. avabicola. 
Apex of teliospore-wall thickened, 7-10 yu. 11. A. consimilis. 
Host belonging to family Euphorbiaceae. 12, A. intumescens. 
Host belonging to family Violaceae. 13. A. effusa. 
Host belonging to family Onagraceae. 14, A. Jussiaeae. 
Host belonging to family Ammiaceae. 
Teliospore-wall smooth. 
Teliospore-wall 3-5 u thick. 15, A. imperspicua. 
Teliospore-wall about 2 u thick. 16. A. microica. 
Teliospore-wall verrucose. 
Teliospore-wall 1.5—2 u thick. 17. A. Erigeniae. 
Teliospore-wall 2.5~3.5 « thick. 18. A. asperior. 
‘Teliospore-wall striately verrucose. 
Teliospore-wall 1.5-2.5 « thick. 19, A. Jonesii. 
Teliospore-wall 3-3.5 u thick. 20. A. Lindrothii. 
Host belonging to family Primulaceae. 21. A. melanconioides. 
Host belonging to family Gentianaceae. 22. A. Swertiae. 
Host belonging to family Convolvulaceae. 
Teliospore umbonate at apex. 
Umbo pale; aeciospores 16-24 u & 19-30 pu. 
Aeciospore-wall 3-3.5 » thick. 23, A. opulenta. 
Aeciospore-wall 1-1.5 yw thick. 24, A. crassipes. 
Umbo nearly concolorous; aeciospores large, 19-28 X 23-34. 25. A. megalospora. 
Teliospore rostrate at apex. 
Teliospore with rostrum 12-23 » thick. 
Aeciospore-wall uniformly 1-1.5 « thick. 26. A. insignis. 
Aeciospore-wall 2-3 « thick; apex much thicker 5-8 yp. 27. A. nocticolor. 
Teliospore with rostrum 8-12 py thick; aeciospore-wall 2-2.5 u 
thick. ‘28. A. superflua. 
Teliospore-wall usually of uniform thickness; aeciospore-wall 2.5- 
3 pw thick. 29. A. rubicunda 
Host belonging to family Polemoniaceae. 
Teliospore-wall nearly uniform in thickness, finely verrucose. 30. A. Giliae. 
Teliospore-wall thickened at apex, smooth. 
Teliospore-wall medium, thick, 1.5-2 4 at sides, 7-10 uw above. 31. A. Douglasii. 
Teliospore -wall thin, 1 4 at sides, 2-4 4 above. 32. A. yosemiiana, 
Host belonging to family Lamiaceae. 
Teliospore-wall smooth, pedicel normally placed. 33. A. mellifera. 
Teliospore-wall verrucose, pedicel often attached near septum. 34. A. vertisepia. 
Host belonging to family Solanaceae. 
Teliospore-wall about 2 uw thick. 35. A. Chamaesarachae, 
Teliospore-wall 2.5-3 yu thick. 36. A. Acnisti. 
Host belonging to family Scrophulariaceae. 
Teliospores minutely verrucose. 37. A. complicata. 
Teliospores coarsely verrucose. 38. A. rufescens. 
Host belonging to family Rubiaceae. 
Teliospore-wall 34 » thick. 39, A. scaberistipes. 
Teliospore-wall 1-1.5 w thick. 40. A. ambigua. 
Host belonging to family Valerianaceae. 41. A. commutaia. 
Host belonging to family Ambrosiaceae. 42. A. intermixta. 
Host belonging to family Carduaceae. 
Teliospore conspicuously thickened at apex. 
Teliospore-wall smooth. 
Teliospores small, not more than 35 yw long. 43. A. tenuis. 
Teliospores moderately long, 35-60 pu. 
Teliospore-wall 1 4 thick, apex 7-16 » thick. 44, A. Batesiana. 
Teliospore-wall 1.5~2 thick. 
Teliospore 7-12 « thick at apex. 45. A. gnaphaliaia. 
Teliospore 5-8 » thick at apex. 46. A, Desmanthodii. 
Teliospores large, over 60 » long. 47, A. Ancizari. 
Teliospore-wall verrucose. 48. A. cornuta. 
Teliospore not conspicuously thickened at apex. 49. A. subcircinata. 
1. Allodus graminella (Speg.) Arth. Résult. Sci. 
Congr. Bot. Vienne 345. 1906. 
Aecidium graminellum Speg. Anal. Soc. Ci. Argent. 12:77. 1881. . 
Puccinia graminella Dietel & Holway; Dietel, Erythea 3:80. 1895. 
O. Pyenia unknown. 
J. Aecia epiphyllous, scattered, often extending lineally along the veins of the leaf 4-5 mm., 
oval or oblong, short-cylindric, small, 0.2-0.5 mm. long, sometimes confluent; peridium color- 
less, the margin erose, usually erect; peridial cells rhomboidal in longitudinal section, 12-15 
by 30-60 y, the outer wall thick, 5-7 u, transversely striate, the inner wall thin, 1.5-2 yu, very 
