ARTHUR AND JOHNSTON: UREDINALES OF CUBA 157 
Xanthium saccharatum Wallr., Santiago de las Vegas, Oct. 
1916, Johnston 2, 6, 9, 10, 12, 14. 
Xanthium intermediate between X. longirostre and X. 
saccharatum, Santiago de las Vegas, Oct. 1916, Johnston 
PE SCR 
The species has been detected on the first host also on a phan- 
erogamic specimen in the herbarium of the N. Y. Bot. Garden, 
collected at Paso Estancia (Prov. Oriente), Aug. 30, 1909, J. A. 
Shafer 1672. 
The species, which is short-cycled and without pycnia, is a com- 
mon American rust, but rather rare in the West Indian islands, 
the other stations being in Jamaica, Porto Rico, and Bermuda, 
and in each instance on X. longirostre. 
104. Puccinia fuscella sp. nov. 
ON CARDUACEAE: 
Vernonia menthaefolia Less., EI Yunque, Baracoa (Prov. 
Oriente), March 10, 1903, II, III, Holway (type), April 
18, 1916, II, III, Johnston 584. 
Uredinia hypophyllous, scattered, roundish, punctiform, mi- 
nute, 0.1-0.2 mm. across, early naked, pulverulent, light cinna- 
mon-brown, ruptured epidermis noticeable; urediniospores broadly 
ellipsoid or obovoid, 23-29 by 26-32 и; walllight cinnamon-brown, 
moderately thick, 2—3 и, echinulate, the pores indistinct, probably 
wall cinnamon-brown, 1.5-2 и, thicker above, 5-94 including а 
Closely related to Puccinia Vernoniae Schw., but differs in the 
uredinial pore-arrangement and other minute characters. The 
type collection was issued as no. 772 in Bartholomew's North 
American Uredinales, under the name P. Vernoniae. 
105. PUCCINIA EVADENS Harkn. Bull. Calif. Acad. Sci. 1: 34. 
1884. 
Eriosporangium evadens Arth. Résult. Sci. Congr. Bot. Vienne 
343. 1906. 
