402 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Earle, Econ. Fungi, 55, on Carex sp., Ell. & Ev., Fungi Col., 135 ; TJstilago 
caricis douglasii Shear, on Carex douglasii, Ell. & Ev., Fungi Col., 1485. 
Sori in ovaries, about 3-4 mm. in diameter, at first hidden by the 
perigynium, then exposed as subspherical bodies protected by a 
false white membrane which soon wears away disclosing black 
firmly agglutinated mass of spores, with distinct columella; sterile 
cells of membrane usually not very distinct because semigelatinized ; 
spores subopaque, chiefly irregular polyhedral, occasionally subspher¬ 
ical, or more elongated in lateral view, granular to papillate or 
sometimes indistinctly pitted, often with signs of hyaline envelope, 
16-27 fx, chiefly 18-22 in length. 
Hosts: Carex arctata, N. H.; C. caiiescens , Can.; C. crinita , 
R. Y.; ? C. dioica, Can.; C. Douglasii , Colo., Nev., Ore., Wash.; 
C. echinata var. cephalantha, N. H., N. Y.; C. echinata var. mi¬ 
cro stachys, Vt. ; C. elynoides , Colo.; C. exilis , Mass.; C. jilifolia , 
Calif.; C. folliculata, Miss.; C.fusca, Penn.; C. glareosa, Green¬ 
land ; C. incurva, Greenland; C. lagopina, Isl. Bering Sea; C. 
limosa, Mich., Wise.; C. livida , Labrador; C. luzidaefolia , Calif.; 
C. Magellanica , N. Y. ; C. marcida , Mont.; C. monile, Yt.; C. 
nardina, Greenland; C. obnupta, Calif.; (J. occidentalism Wyo.; C. 
oligosperma , N. Y.; C. pedunculata, Me.; C. Pennsylvanica , 
Conn., Ia., Ill., Mass., Me., Minn., Mont., N. H., N. Y., Penn., R. I.; 
C. pseudoscirpoidea, Wyo.; C. rigida, Greenland, Labrador; C. 
rupestris , Can., Greenland; C. salina , Labrador; C. scirpoidea , 
Greenland, N. F.; C. siccata, Vt., Can.; C. ( Sitchensis , Calif.); C. 
straminiformis , Calif.; C. stricta , 1ST. Y., Wise.; C. tetaniea , Mass.; 
C. turfosa , Greenland ; C. umbellata , Del., N. H., N. Y.; C. um- 
bellata var. vicina , Me.; C. utriculata , N. Y.; C. vaginata , Me., 
Labrador; C. varia , Ohio; C. variabilis, Wash.; C. vulgaris var. 
hyperborea , Greenland; Carex sps., Calif., Mass., Mich., Mo., N. 
Car., H. H., R. I., Utah, Yt., Wash., Wyo.; ICobresia caricina, —; 
K. scirpina , Greenland; Scirpas caespitosus , Greenland. 
It is questionable whether the germination of this fungus is suffi¬ 
ciently distinct to admit a new genus being founded on it, as in case 
of Brefeld’s Anthracoidea. The writer prefers to place it in the 
genus Cintractia, where many of the species are closely related to it. 
The species is variable, but while the extreme variations are quite 
different they are so closely connected by intermediate forms that 
it does not seem wise even to distinguish varieties. The sori with 
