590 NORTH AMERICAN FLORA [VoLuME 7 
TYPE LocaLiIty: Sweetwater county, Wyoming, on Artemisia tridentata. 
DisTRIBUTION: Known only from the type locality. 
EXCLUDED SPECIES 
UROMYCES PLURIANNULATUS Berk. & Curt. Grevillea 3: 57. 1874., On Sanicula, from Ala- 
pee sin to the Chytridiaceae (see Farlow, Bot. Gaz. 10: 243. 1885, and Rhodora 
0: 12. 1908 
2. PUCCINIA. 
Telia and uredinia as in Uromyces, except that the teliospores are two-celled, with one 
pore in each cell. 
Genus based upon a concept, and not upon a type species. 
Host belonging to family Alliaceae. 1. P. pagana. 
Host belonging to family Dioscoreaceae. 2, P. valida. 
Host belonging to family Musaceae. 3. P. Heliconiae. 
Host belonging to family Orchidaceae. 4. P. cinnamomea. 
Host belonging to family Chenopodiaceae. 5. P. Dondiae. 
Host belonging to family Ranunculaceae. 
Teliospore-wall coarsely verrucose. 6. P. Viornae. 
‘Teliospore-wall smooth. 7. P. stromatica. 
Host belonging to family Dilleniaceae. 8. P. vergrandis, 
Host belonging to family Sapotaceae. 9. P. Johnstonii. 
Host belonging to family Asclepiadaceae. 10. P. Marsdeniae. 
Host belonging to family Heliotropiaceae. ll. P. gilva. 
Host belonging to family Verbenaceae. 12. P. senilis. 
Host belonging to family Scrophulariaceae. 
Urediniospore-pores 2, in occasional spores 3. 
Teliospores ellipsoid. 13. P. Collinsiae. 
Teliospores oblong. 14. P. Antirrhini. 
“Urediniospore-pores 3. 15. P. Castillejae. 
Host belonging to family Bignoniaceae. 16. P. aequinoctialis, 
Host belonging to family Plantaginaceae. 17. P. pacifica. 
Host belonging to family Rubiaceae. 18. P. falleciosa. 
Host belonging to family Carduaceae. 
Of the tribe Inuleae. 19. P. Gnaphalii. 
Of the tribe Heliantheae. 
Teliospore-wall smooth. 
Teliospore-wall evenly thick. 20. P. punctoidea. 
Teliospore-wall thicker above. 
Pedicel inflated. 21. P. turgidipes. 
Pedicel cylindric. 
Teliospores oblong, obovate, or clavate. 
Urediniospore-wall thin, 1-1.5 u. 
Urediniospore-wall minutely echinulate. 22. P. Tithoniae. 
Urediniospore-wall strongly echinulate. 23. P. Axiniphylli. 
Urediniospore-wall thick, 2-3 yp 
Urediniospore-wall minutely echinulate. 
Urediniospores 23~26 26-32 yu. 24. P. nuda. 
Urediniospores 16-23 X 24-26 yp. 25. P. Parthenices. 
Urediniospore-wall prominently echinulate. 26. P. Guardiolae. 
Teliospores usually ellipsoid. 
Teliospore-wall greatly thickened above, 10-12 mu. 27. P. Noccae. 
Teliospore-wall somewhat thickened above, 3-9 p. 
Teliospore-wall thick, 3-5 yu. 
Teliospores 28-32 wu broad. 
Urediniospore-wall strongly echinulate. 28. P. Otopappi. 
Urediniospore-wall minutely echinulate. 29. P. Parthenit. 
Teliospores 23-26 uw broad. 30. P. vaga. 
Teliospore-wall thin, 1.5-2.5 u. 31. P. Melantherae. 
Teliospore-wall roughened. 
Teliospore-wall evenly thick. 32. P. globulifera. 
Teliospore-wall thicker above. 
Teliospore-wall thin, 1.5-2.5 py. 33. P. Zaluzaniae. 
Teliospore-wall thick, 3-6 u. 
Teliospore-wall 3-4 » thick, 5-7 » above. 
Urediniospore-wall 1-1.5 uw, closely echinulate. 34, P. nanomitra. 
Urediniospore-wall 1.5—2.5 uw, sparsely echinulate. 35. P. Electrae. 
‘Teliospore-wall 4-6 « thick, 7-10 4 above. 36. P. Iostephanes. 
Of the tribe Helenieae. 
Teliospore-wall smooth. 
Urediniospore-wall finely verrucose. 37. P. Porophylli. 
Urediniospore-wall moderately echinulate. 38. P. tageticola. 
Teliospore-wall roughened. 
Teliospores large, 30-40 yu long. 39, P. jaliscana. 
Teliospores small, 26-30 » long. 40. P. Eriophylli. 
