Oct. 1902] 
North American Ustilagineae 
139 
*** Spores lilac to purple. (Ustilago.) 
USTILAGO KOENIGIAE Rostr. — Host: Koenigia is- 
landica, Greenland (type). 
USTILAGO VINOSA (Berk.) Tul.— Host: Oxyria 
digyna, Calif., Greer.I. 
USTILAGO VIOLACEA (Pers.) Fckl.—Hosts: Arenaria 
groenlandica, Me., N. H., N. Y.; A. lateiiflora var. glabrescens, 
Wash.; Cerastium maximum, Alaska; Lychnis sp., Minn.; Silene 
acaulis, N. H.; S. douglasii var. macounii, Mont.; S. multicaulis, 
Wash.; S. tetonensis, Wyo.; S. watsoni, Calif., Wash; Stellaria 
borealis, Greenl. 
USTILAGO VIOLACEA var. MAJOR Clint, n. var.— Sori 
inconspicuous, filling swollen anthers, soon rupturing and dis¬ 
closing violet colored dusty mass of spores; spores pale lilac to 
violet, ovoid to spherical, occasionally somewhat irregular, with 
rather conspicuous spore wall covered ‘with numerous minute 
reticulations (i m or less in diameter), chiefly 7-12 ix in length. 
Host: Silene watsoni, Wash. (type). 
European botanists seem inclined to keep Schroeter’s species 
of Ustilago major on Silene otites distinct from Ustilago violacea. 
The spores of the variety described here are much like those of the 
former species and if the two are the same it seems doubtful if the 
European form on Silene otites deserves specific rank. This vari¬ 
ety represents the extreme variation from the species as found in 
this country. Silene watsoni is also a host for the species. 
USTILAGO GAYOPHYTI Hark.—Host: Gayophytum 
ramosissimum Calif, (type), Ore. 
USTILAGO ANOMALA Kze.—Hosts: Polygonum cili- 
node, Me., N. H., N. Y., Verm.; P. convolvulus, Ill.; P. dume- 
torum var. scandens, Ind., Mo., Verm., W. Virg. 
USTILAKO UTRICULOSA (Nees.) Tul.— Hosts: Polyg¬ 
onum acre, Ill., Kans., Miss.; P. amphibium, Ind., Penn.; P. 
aviculare, Calif.; P. erectum, Miss.; P. hydropiper, Ala., Conn., 
Ia.; P. hydropiperoides, Conn., Miss., Verm.; P. lapathifolium, 
Ill.; P. lapathifolium var. incarnatum, la., Ill.; P. pennsylvani- 
cum, Ala., Ia., Ill., Kans., Mass., Miss., Mo., Neb., N. H., N. J., 
N. Y., Ohio, R. I., Verm., W. Virg.; P. sagittatum, N. Y. ; 
Polygonum sp., Ill., Mass., Mich., Mo., N. Car., N. J., R. I., Mex. 
On some of these hosts, especially those growing in moist 
situations, as Polygonum acre and Polygonum hydropiperoides, 
the smut approaches very closely to Ustilago anomala. 
USTILAGO KUEHNEANA Wolff. — Host: Rumex 
acetosella, S. Car. 
