252 NORTH AMERICAN FLORA [Voi^UMB 7 



55. Nigredo Lupini (Berk. & Curt.) Arth. R6sult. Sci. Congr. 



Bot. Vienne 344. 1906. 



Uredo Lupini Berk. & Curt. Proc. Am. Acad. 4 : 126. 1858. 

 Uromyces Lupini Berk. & Curt. Proc. Am. Acad. 4 : 126. 1858. 

 Uromyces tomentellus Cooke, Grevillea 6 : 138. 1878. 

 Uromyces Astragali Lupini De-Toni, in Sacc. Syll. Fung. 7 : 550. 1888. 



O. Pycnia chiefly epiphyllous, gregarious, in small groups, inconspicuous, yellowish 

 becoming brownish, depressed-globose, 128-160 ju in diameter by 91-112 ju high; ostiolar 

 filaments rather short. 



Ii Aecia hypophyllous, gregarious, in crowded or annular groups 1.5-5 mm. across on 

 discolored spots, short, cupulate, 0.2-0.3 mm. in diameter ; peridium colorless, the margin 

 recurved, erose ; peridial cells rhomboidal, 23-34 ju long, the outer wall rather thick, 4-7 /x, 

 transversely striate, the inner wall thinner, 2-3 ju, partially striate, moderately verrucose ; 

 aeciospores globoid, 18-24 by 21-29 ju; wall light-yellow or colorless, 1.5-2 /* thick, moder- 

 ately verrucose. 



II. Uredinia amphigenous, somewhat gregarious, in loose, sometimes annular groups 

 2-5 mm. across, roundish, 0.5-1 mm. in diameter, rather soon naked, cinnamon-brown, 

 pulverulent, ruptured epidermis conspicuous ; urediniospores subgloboid or broadly ellip- 

 soid, 19-24 by 24-32 jLt; wall dark-yellow, moderately thick, about 2-3 /x, evenly and rather 

 closely echinulate with blunt conical points, the pores 6-8, scattered. 



III. Telia amphigenous, solitary or somewhat gregarious, in loose, sometimes annular 

 groups, 0.5-1 mm. or more in diameter, rather soon naked, compact, pulvinate, dark 

 chocolate-brown or blackish, ruptured epidermis conspicuous ; teliospores subglobose or 

 ellipsoid, 18-26 by 26-39 jUi rounded or somewhat narrowed at the apex; wall chestnut- 

 brown, 2-3 JU thick, thicker above, 7-12 ju, smooth ; pedicel tinted, once to twice length of 

 spore or more. 



On Fabaceae : 



Lupinus albifrons Benth., California. 



LupinurS argenteus Pursh, Colorado. 



Lupinus campesiris Cham. & Schlecht., Hidalgo. 



Lupinus Ckamissonis 'Bschsch., California. 



Lupinus decumbens Torr., Colorado, Nebraska. 



Lupinus Douglasii 1 . Ag., California. 



Lupinus elegans 'H.'B.'K., Mexico (state). 



Lupinus formosus Greene, California. 



Lupinus holosericeus Nutt., Montana. 



Lupinus latifolius J. Ag., California. 



Lupinus laxijiorus Dough, Wyoming. 



Lupinus Losani Rose, Jalisco. 



Lupinus me xicanus H.B.K., Mexico (state). 



Lupinus monianus H.B.K., Hidalgo. 



Lupinus parvijiorus Nutt. , Wyoming. 



Lupinus polyp hyllus lyindl., Washington. 



Lupinus rivularis Dougl. {L. cytisoides J. Ag.)., California. 



Lupinus sericeus Pursh, Idaho. 



Lupinus uncinatus Schlecht., Hidalgo. 



Lupinus sp., Arizona, Oregon. 

 Type locality : California, on leaves of Lupinus. 



Distribution : Montana and Nebraska westward to the Pacific coast, and southward through 

 Mexico. 



ExsicCATi : D. Griff. W. Am. Fungi 377 ; Sydow, Ured. 857, 1761, 1856, 1961; EUis, N. Am. 

 Fungi 1441; Rav. Fungi Am. 52; Earth. Fungi Columb. 2290. 



56. Nigredo occidentalis (Dietel) Arthur. 



Urom,yces occidentalis Dietel, Hedwigia Beibl. 42 : 98. 1903. 

 Uromyces rugosus Arth. Bot. Gaz. 39 : 386. 1905. 



O and I. Pycnia and aecia not seen. 



II. Uredinia chiefly hypophyllous, solitary or often in annular groups 2-4 mm. or more 

 across, roundish, 0.4-0.8 mm. in diameter, rather early naked, pulverulent, cinnamon- 

 brown, ruptured epidermis noticeable ; urediniospores broadly ellipsoid or subglobose, 

 16-23 by 19-29 m; wall golden-brown, 1.5-2 m thick, closely and bluntly echinulate, the 

 pores 6-8, scattered, 



III. Telia chiefly hypophyllous, solitary or in annular groups 3-6 mm. across, roundish 



