200 BOTANICAL GAZETTE [march 



Teliospores reticulate. 



Spores 14-21 by 18-26 fi " 2. U. baiihiniicola 



Spores 12-17 by 16-23 fx 3. U. jamaicensis 



Teliospores smooth. 

 Wall thin, 1-1 . 5 /x. 



Spores narrow, n-17 /x wide. 



Spores 27-39 \x long 7. U. Myr sines 



Spores 19-32 /x long 10. U. Rudbeckiae 



Spores broad, 15-28 fx wide 11. U. Bidentis 



Wall thick, 1 . 5-3 /x. 



Apex thickened 6-12 /jl 8. U. Solidaginis 



Apex thickened 3-7 /x. 



Spores 27-40 ix long 4. U. abbreviatus 



Spores 19-30 fx long 9. U. amoenus 



1. Uromyces heterodermus Sydow, Ann. Myc. 4:29. 1906. 



O. Pycnia amphigenous, not uncommon, gregarious in loose 

 groups with the telia, 0.5-1.5 mm. across, inconspicuous, subepi- 

 dermal, dark golden-brown, flattened globoid, 100-185 \x in diameter 

 by 65-130 fx in height; ostiolar filaments few, loose, up to 65 /x long. 



III. Telia amphigenous, numerous, scattered or in small groups, 

 sometimes upon inconspicuous spots, roundish or oval, 0.3-2 mm. 

 across, rather early naked, pulverulent, dark cinnamon-brown, 

 surrounding epidermis noticeable; teliospores ellipsoid or broadly 

 ellipsoid, 19-26X26-43 /x, rounded above, rounded or slightly 

 narrowed below; wall dark golden-brown, 1.5 ju thick, thickened 

 at the apex with a distinct hyaline papilla, 3-6 ju, coarsely verrucose 

 above, with the markings often in longitudinal ridges, smoother 

 below; pedicel hyaline, fragile, short. 



le: Erythroninm grandifiorum Pursh, Colorado, Montana, 



Washingt 



iflorum (Wats 



florum parviflorum S. Wats.), Colorado, Montana, Oregon, Utah, Washington, 

 Wyoming. 



Type locality: Wasatch Mountains, Utah, on Erythroninm parviflorum. 



Distribution: Rocky Mountain region from Colorado and Utah north- 

 ward, and to the coast in Oregon. 



Exsiccati: Barth., Fungi Columb. 4694; Barth., N.Am. Ured. 789, I59 2 > 

 1692; Garrett, Fungi Utah. 118; Ellis and Ev., Fungi Columb. 750. 



Literature: Sydow. Monoer. Ured. 2:270. iqio: Saccardo, Syll. Fung. 



21:579. 1912 



