XII, c, 6 Yates: Fungi of Southern China . 315 
UR EDO Persoon 
UREDO CANTONENSIS sp. nov. 
Soris uredosporiferis hypophyllus, punctiformibus, mox nudis, 
brunneis, 0.25-0.33 mm diam. ; uredosporis globosis vel subglo- 
bosis, echinulatis, brunneis, 22-26 x 16-20p,, episporio ca. l-2p, 
crasso, poris germinationis 1-3 ; pedicellis hyalinis, 20-50/a longis, 
5-6/1 latis. 
Kwangtung Province, Canton (Honam Island), Merrill 10386, November 
3, 1916, on leaves of Melothria indica. 
This species is one of the few belonging to this genus occuring upon the 
Cucurbitaceae. It appears to be very close to the uredo form of Uromyces 
Hellerianus Arth., described from material from Porto Rico on Cayaponia 
racemosa. No teleutospores have however been found in our material and 
so it must be described as a Uredo. 
Uromyces melothriae P. Henn., which according to Sydow is merely a 
uredo form, differ^ from our species chiefly in its much larger spore 
measurements. It was originally described from Abyssinia on Melothria 
tomentosa. 
UREDO PHILIPPINENSIS Syd. in Ann. Myc. 4 (1906) 32. 
Kwangtung Province, Canton (Honam Island), Merrill lOJfOJf, October 25, 
1916, on leaves of Cyperus sp. 
UROMYCES Link 
UROMYCES LINEARIS B. et Br. in Journ. Linn. Soc. Bot. 14 (1875) 92. 
Kwangtung Province, Canton (Honam Island), Merrill lOiOl, October 
25, 1916, on leaves of Panicum repens. 
USTILAGINACEAE 
USTILAGO Persoon 
USTILAGO CYNODONTIS P. Henn. in Engl. Bot. Jahr. 14 (1891) 369. 
Kwangtung Province, Canton (Honam Island), Merrill 101-03, October 
23, 1916, on inflorescences of Cynodon dactylon. Also Levine 761, May 5, 
1917, on the same host. 
USTILAGO KOORDERSIANA Bref. Untersuchung. 12 (1895) 132. 
Kwangtung Province, Canton (Honam Island), Merrill 10103, October 
21, 1916, on inflorescences of Polygonum sp. 
DEMATIACEAE 
CERCOSPORA Fresen 
CERCOSPORA PERSONATA (B. et C.) Ellis in Journ. Myc. 1 (1885) 63. 
Cladosporium personatum B. et C. in Grev. 3 (1875) 106. 
Kwangtung Province, Canton (Honam Island), Merrill 10387, October 
20, 1916, on leaves of Arachis hypogaea. 
