Ustilago utriculosa (Nees) Tul. & C. Tul. 1847

Ustilago utriculosa (Nees) Tul. Ann. Sci. Nat. III. 7: 102. 1847
Caeoma uiriculosum Nees, Syst. Pilze 1 : 14. 1817.
Sori in ovaries and probably in stamens, protected by floral envelopes, ovate, about 3^ mm. in length, forming a dusty purplish spore-mass ; spores violet, chiefly subspherical or spherical, with prominent winged reticulations (2-4 fi wide by about 1.5 /* deep), chiefly 9-14 fin diameter.
On Polygonaceae :
Persicaria amphibia {Polygonumamphibium)^ Indiana, Pennsylvania. Persicaria Careyi {Polygonum Careyi), Maine.
Persicaria Hydropiper {Polygonum Hydropiper) , Alabama, Connecticut, Iowa. Persicaria hydropiperoides {Polygonum, hydropiperoides) , Connecticut, Mississippi, Vermont, Wisconsin. Persicaria incarnata {Polygonum incarnaiiim, P. lapathifolium, incarnatum)^ Illinois,
Iowa.
Persicaria lapathifolia {Polygonumlapathifolium)^ Connecticut, District of Columbia,
Illinois. Persicaria pennsylvanica {Polygonum pennsylvanicum) , Alabama, Connecticut, Delaware,
Illinois, Iowa, Kansas, Massachusetts, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, Ohio, Rhode Island, Vermont, West Virginia.
Persicaria punctata {Polygonum punctatum, P. acre), Illinois, Kansas, Mississippi.
Persicaria {Polygonum) sp., Illinois, Massachusetts, Michigan, Missouri, New Jersey, North Carolina, Rhode Island, Washington ; Mexico.
Polygonum aviculare, California.
Polygonum erectum, Mississippi.
? Tracaulon sagittatum {Polygonum sagittatum), New York. Type locality: Europe, on Polygonum sp. Distribution : New England to Alabama, Mexico, and Washington ; also in South America,