^^ NORTH AMERICAN FLORA [Volume 7 



Carex scirpoidea, Greenland ; Newfoundland, 



Carex siccata^ Vermont ; Canada. 



Carex siichensis California. 



Carex sterilis (C echinata microstachys), Vermont. 



Carex sterilis cephalantha {C. echinata cephalantha) y New Hampshire, New York. 



Carex slraminiformis , California. 



Carex striata, Nebraska, New York, Wisconsin. 



Carex tetanica, Massachusetts. 



Carex umbellaia, Delaware, New Hampshire, New York. 



Carex umbellata vicina, Maine. 



Carex utriculata. New York. 



Carex varia, Ohio. 



Carex variabilis, Washington. 



Carex spp., California, Colorado, Massachusetts, Michigan, Missouri, New Hampshire, 

 North Carolina, Rhode Island,(UtaJ>, Vermont, Washington, Wyoming. 



Elyna Bellardi {Kobresia .y^z>-^zwa)7"^eenland. 



Kobresia bipartita {K. caricina), . 



Scirpus caespitosus, Greenland. 

 Type locality ; Europe, on Carex montana. 



Distribution : Throughout the area containing species of Carex. 



Illustrations: Ann. Sci. Nat. III. 7: pi. 4, /. 7-10; Bull. Conn. Geol. Nat. Hist. Surv. 

 Z\f.8, 27 ; Brefeld, Unters. Gesammt. Myk. 12 : pi. 9, f. 4-5 ; Tubeuf, Diseases PI. /. 163 ; Bull. 

 -Soc. Nat. Mosc. 40i : pi. J, f. 8; Mem. Acad. Sci. Bologna V. 3 : 527. 



Exsiccati : S^dow, Ust. 173, 313, 314, 315 ; Griff. West Am. Fungi 209, 209a, 210, 211 ; EUis & 

 Ev. N. Am. Fungi 1090, 2259 ; Shear, N. Y. Fungi 81 ; Seym. & Earle, Econ. Fungi 55, C 3,C4, 

 C5, C 101 ; Ellis & Ev. Fungi Columb. 135, 1485. 



8. Cintractia externa (Griff.) Clinton, Jour. Myc. 8 : 142. 1902. 



Tilletia externa Griff. Bull. Torrey Club 29 : 290. 1902. 



Sori in the ovaries, subspherical, about 3 or 4 mm. in diameter, forming a firmly ag- 

 glutinated black spore-mass that on absorbing moisture becomes smeared over adjacent 

 parts, with evident small columella; spores bla^k-brown, opaque, ovoid to spherical, 

 smooth, provided with hyaline membranes of which the thin inner is formed by part of cell- 

 wall and the outer by the evident remains of the fertile hypha, 17-22 ," in diameter. 



On CypEraceae : 



Carex filifolia, Montana, Nebraska, Wyoming. 

 Type locality : Burnett's ranch, near Buffalo, Wyoming, on Carex Jihfolia. 

 Distribution : Montana, Wyoming,- and Nebraska. 

 Illustration : Bull. Torrey Club 29 : 291,/ 1. 

 ExsiccATi: Seym. & Earle, Econ. Eungi C2; Griff. West Am. Fungij'ft5. 



9. Cintractia Luzulae (Sacc.) Clinton, Jour. Myc. 8 : 143. 1902. 



Ustilago Luzulae Sacc. Myc. Ven. Spec. 73. 1873. 



Sori in the ovaries or occasionally extending to the base of the flowers, subspherical, 

 about 2 mm. in diameter, usually concealed by the perianth, forming at first a firmly ag- 

 glutinated but eventually a somewhat granular black spore-mass, with inconspicuous colu- 

 mella; spores dark-reddish to black-brown, subopaque or opaque, compressed somewhat 

 laterally and so appearing oblong to chiefly oval or circular according to view, usually more 

 or less angled, apparently smooth but under an immersion showing subreticulately pitted, 

 20-30 /i in length. 



On Juncaceae : 



Juncoides campestre {Luzula campestris), Indiana. 

 Type locality : Italy, on Luzula Forsteri. 

 Distribution: Indiana; also in Europe. 

 Illustration: Sacc. Myc. Ven. Spec. ^/. 17, f. 33,34. 



10. 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 



