CLINTON: NORTH AMERICAN USTILAGINEAE. 
379 
Sori in ovaries or essential organs, the infected parts often 
remaining distinct, 2-3 mm. in length, protected by the perianth, 
forming a dusty purplish spore mass ; spores light violet, chiefly 
ovoid to spherical or occasionally somewhat irregular, with rather 
fine reticulations (chiefly 1-3 p wide by 1 /x deep), 10-15 /x, rarely 
17 /jl, in length. 
Hosts: Polygonum cili?iode, Me., N. H., N. Y.,Vt.; P. Convol¬ 
vulus , Ill.; P. dumetorum var. scandens, Conn., Ind., Mo., Vt., 
W. Va. 
This species is quite distinct from Ustilago utriculosci on Poly¬ 
gonum lapathifolium and P. Permsylvanicum but the smut on 
P. acre and some of the other hosts seems to form a somewhat 
intermediate link between the two species. In general U. anomala 
differs from XT. utriculosa in having lighter colored more irregular 
spores with finer reticulations. Its germination has been described 
by Schroter and Brefeld. Literature : 23. 
Ustilago utriculosa (Nees) Tub 
Caeoma utriculosum Nees, Syst. Pilze, 1: 14. 1817. 
Uredo utriculosa Duby, Bot. Gall., 2 : 901. 1830. p. p. 
Ustilago utricolorum Fr., Syst. Myc., 3 : 519. 1832. p. p. 
Erysibe utriculosa Wallr., FI. Crypt. Germ., 2 : 216. 1833. p. p. 
Ustilago utriculosum Fr., Sum. Veg. Scand., 516. 1846. [Name merely.] 
Ustilago utriculosa Tul., Ann. Sci. Nat.. Bot., in, 7: 102. 1847. 
Sporisorium muricatum Ces., Klotz-Rab. Herb. Yiv. Myc. Fungi, 1693. 
1852. 
Exsiccati : Ustilago utriculosa (Nees) Tul., on Polygonum Pennsylvani- 
cum, Ell., N. A. Fungi, 288, Shear, N. Y. Fungi, 84, Seym. & Earle, Econ. 
Fungi, 376 a-b, Seym. & Earle, Econ. Fungi Clinton Ust. Supp., C 96 ; on 
Polygonum acre , Seym. & Earle, Econ. Fungi Clinton Ust. Supp., C 94 ; 
on Polygonum lapathifolium, Fungi Col., 1798, Seym. & Earle, Econ. Fungi 
Clinton Ust. Supp., C 95; on Polygonum sp., Rab.-Wint.-Paz., Fungi Eur., 
3905, Seym. & Earle, Econ. Fungi, 376 x, Ell. & Ev., Fungi Col., 42, Syd., 
Ust., 258. 
Sori in ovaries and probably in stamens, protected by floral 
envelopes, ovate, about 3-4 mm. in length, forming a dusty purplish 
spore mass; spores violet, chiefly subsplierical or spherical, with 
prominent winged reticulations (2-4 p wide by about 1.5 /x deep), 
chiefly 9-14 p in diameter. 
Hosts : Polygonum acre , Ill., Ivans., Miss.; P. amphibium , Ind., 
