ORTON: north AMERICAN SPECIES OF ALLODUS 203 



Telia chiefly epiphyllous, scattered, pulvinate, ruptured epi- 

 dermis not conspicuous; teliospores broadly ellipsoid, 26-29 by 

 35-45 /x; wall 3-4 M thick, chestnut-brown, finely verrucose, the 

 apex up to 7 M thick, with a hyaline umbo; pedicel colorless, up to 

 lOG ;u long, slightly roughened beLow. 



On Rubiaceae: 



Boiivardia triphylla Salisb. 

 Type locality: Santa Catalina Mts., Arizona, on Bouvardia 



triphylla. 

 Distribution: Known only from Arizona. 

 ExsicCATi : Griff. W. Am. Fungi jp^. 



40. Allodus ambigua (A. & S.) Arth. Result. Sci. Congr, Bot. 



Vienne 345. 1906 

 Aecidium Galii ambiguum A. & S. Consp. Fung. 116. 1805. 

 Piiccinia difformis Kunze, Myk. Hefte 1: 71. 1817. 

 Piiccinia ambigua Lagerh.; Bubak, Sitz.-ber. Bohm. Ges. Wiss. 



1898-^: 14. 1898. 



Aecia hypophyllous, grouped on reddish-brown spots; aecio- 

 spores 14-19 by 17-22 n; wall about i ^ thick, finely and distinctly 

 verrucose. 



Telia hypophyllous and caulicolous, arising from around the 

 secondary aecia or scattered, rather long covered by the epidermis, 

 cinereous; teliospores ellipsoid 14-22 by 31-43 /x; wall light 

 chestnut-brown, about i ix thick, smooth, the apex 6-10 /x thick; 

 pedicel slightly tinted, up to the length of spore. 



On Rubiaceae: 



Galium Aparine h. 

 Type locality: Germany, on Galium Aparine. 

 Distribution: Ohio to British Columbia and California; also in 



Europe. 

 ExsiccATi: Sydow, Ured. 22 jg; Brenckle, Fungi Dakot. 59; 



Barth. N. Am. Ured. 1426. 



41. Allodus commutata (Syd.) Arth. Result. Sci. Congr. Bot. 



Vienne 345. 1906 

 Puccinia commutata Sydow, Monog. Ured. 1: 201. 1902. 



Aecia hypophyllous, gregarious or scattered over leaf, often 

 on large yellow spots; aeciospores 12-19 by 16-21 /z; wall 1-1.5 /x 

 thick, finely verrucose. 



Telia amphigenous, caulicolous, around the secondary aecia, 



