150 



Mycologia 



established by further collections and study, the two groups of 

 rusts should be given independent generic rank. 



116. Uredo maculans Pat. & Gaill. (on Amaranthaceae) 

 Achyranthes sp., Alajuela, Jan. 7, 1916, 382. 



This is the first record of the species for North America. It 

 has recently been collected in Panama, however, on A. WilUamsii 

 Standley, March 6, 191 3, by E. Bethel. The species was 

 originally described from Venezuela (Bull. Soc. Myc. Fr. 4:98. 

 1888), and is also known from Ecuador. 



117. Uredo Hameliae Arth. (on Rubiaceae) 

 Hamelia erecta Jacq., San Jose, Jan. 8, 191 6, 390. 



Heretofore the species has only been known from two collec- 

 tions from Porto Rico (Mycol. 8:23. 1916; and 9:95. 1917)- 



118. Uredo suspecta Jackson & Holway sp. nov. (on Carduaceae) 

 Enpatorium daleoides (DC.) Hemsl. (?), Cartago, Jan. 20, 1916, 



448. 



Uredinia hypophyllous, few, gregarious or scattered, dark cin- 

 namon-brown, ruptured epidermis conspicuous ; urediniospores 

 ellipsoid or obovoid, 26-29 by 30-35 /x ; wall dark cinnamon- 

 brown, 2-2.5 F- thick, echinulate, the pores 2, equatorial. 



This uredinial form doubtless belongs to some species of Puc- 

 cinia. It is much like P. Clinopodii, but has much larger spores 

 with thicker walls. No telia on a smooth-leaved Eupatorium 

 similar to the host in hand, which could belong with such a form, 

 have yet been seen. 



Index to Uredinales 

 New or newly combined names are in bold-faced type 



Aecidiolum Hydrocotyles, 63 Aecidium solanitum, in 



Aecidium abscedens, 112 tenerius, 1 1 1 



albicans, 109 tubulosum, no 



ampliatum, 113 Alveolaria Cordiae, 15 



crotalariicola, 31 Argomyces Vernoniae, 87 



detritum, 109 Calliospora Diphysae, 20 



favaceum, 109 Cerotelium Fici, 7 



luzoniense, 109 Chrysocelis Lupini, 6 



Phyllamthi, 109 Cionothrix praelonga, 14 



phyllanthinum, 109 Coleosporium Elephantopodis, 3 



