JACKSON: UREDINALES OF OREGON 253 



120. Puccinia insperata sp. nov. 



0. Pycnia not seen. 



1. Aecia chiefly hypophyllous and petiolicolous ; in crowded 

 groups on yellowish spots 2-3 mm. across; cupulate, 0.2-.25 mm. 

 broad; peridium whitish, margin recurved, lacerate; peridial cells 

 rhombic, 19-27 by 35-45 M) overlapping, outer wall 1-1.5/x thick, 

 inner wall 3-4 m thick, verrucose; aeciospores globoid or broadly 

 ellipsoid, 15-19 by 19-23 /i, wall colorless, i-i.5;u thick, finely and 

 closely verrucose. 



II. Uredinia amphigenous, scattered, round, 0.2-0.5 rnm. across, 

 tardily naked, pulverulent, pulvinate, cinnamon brown, ruptured 

 epidermis conspicuous; urediniospores subglobose or broadly ellip- 

 soid, occasionally obovate, 19-21 by 23-29 /:; wall cinnamon brown, 

 1.5-2 IX thick, minutely and closely echinulate, pores 2-3, scattered. 



III. Telia amphigenous and petiolicolous, scattered, round, 0.2- 

 0.8 mm. across, tardily naked, pulvinate, becoming pulverulent, 

 blackish brown, ruptured epidermis conspicuous; teliospores ellipsoid 

 or broadly obovoid, occasionally somewhat irregular, 16-20 by 23-32 n, 

 rounded at both ends, scarcely or not at all constricted, wall chestnut 

 brown, 1.5-2 /x thick, uniform, smooth; pedicel colorless, deciduous. 

 On Cichoriaceae : 



Nabalus hastatus (Less) Heller — Hood River, May 16, 1915, 2662, 

 July 24, 1915, 3265, type. 



A very distinct species separable from the eastern P. orbicula 

 Pk. by the smooth teliospores and the presence of a definite peridium 

 in the aecidium. The two collections were made at the same spot. 

 The first shows aecia unaccompanied by pycnia, associated with 

 telia chiefly on the petioles, suggesting strongly an opsis-form. The 

 second collection, however, shows scattered uredinia and telia with a 

 few old aecia. 



121. Puccinia Iridis (DC.) Wallr. in Rabenh. Krypt. Fl. i: 23. 



1844. 



Uredo Iridis DC. Encycl. 8: 224. 1808. 

 On Iridaceae: 



Iris tenax Dougl. — Corvallis, June 24, 1914, F. D. Bailey, 1343; 

 Wren, Benton Co., July 22, 1914, 1413, Ashland, Jackson Co., Sept. 

 10, 1914, IQQ4. 



122. Puccinia Jonesii Pk. Bot. Gaz. 6: 226. 1881. 



Allodus Jonesii Arth. Result Sci. Congr. Bot. Vienne 345. 1906. 

 On Umbelliferae : 



Peucedannm triternata (Pursh) Nutt. — Austin, Grant Co., Aug. 

 191 5, J. R. Weir, 749, 151. • 



