Stegocintractia junci (Schwein.) M. Piepenbr. 2000

Cintractia junci (Schw.) Trel. Bull. Torrey Club 12 : 70. 1885
Caeomajunci Schw. Trans. Am. Phil. Soc. II. 4 : 290. 1832. Ustilago Jtinci Curt. Cat. Pi. N. Car. 123. 1867.
Ustilago Liebmanni P. Henn. Hedwigia 33 : 229. 1894. (Type from Mexico, on Juncus sp., not Luzula sp., as stated.)
Sori usually linear, surrounding peduncles and pedicels for more or less of their length, sometimes in basal parts of the flowers and even occasionally filling the ovaries, forming an agglutinated black spore-mass ; sterile cells usually not evident since inconspicuous and early evanescent ; spores black-brown, subopaque, more or less agglutinated, somewhat compressed laterally and so appearing oblong to irregularly polygonal or subcircular according to view, minutely pitted, 14-22 fi in length.
On Juncaceae :
Jiincus acuminatus^ Mississippi. Juncus effusus, New Jersey.
Juncus tenuis, Connecticut, Illinois, Iowa, Massachusetts, New Jersey, New York, Ohio,
Pennsylvania, Vermont, Wisconsin. Juncus sp., Massachusetts, North Carolina ; Mexico. Type locality : Bethlehem, Pennsylvania, on Juncus tenuis.
Distribution: New England to Wisconsin, North Carolina, and Mexico ; also in South America.