CLINTON: NORTH AMERICAN USTILAGINEAE. 
429 
a conspicuous agglutinated spore mass , provided with an evident 
false membrane; spore balls composed of an external layer of fer¬ 
tile cells within which is a central mass of sterile parenchymatous 
cells , of large size; spores dark colored, apparently dehiscing in 
time, of medium size ; germination unknown. 
This genus has only one species, with a variety, the second spe¬ 
cies placed under it by Cornu apparently not belonging here. The 
spores and sorus are much like those of Cintractia, and so the genus 
is placed under the Ustilaginaceae, though its germination is not 
known. At first the spore balls are firmly agglutinated by inter¬ 
vening fungous threads, but later by further gelatinization of these 
the sorus may become granular. 
Testicularia Cyperi Klotz. 
Testicularia Cyperi Ivlotz., Linnaea, 7 : 202. 1832. 
Milleria herbatica Pk., Ann. Rep. N. Y. St. Mus. Nat. Hist., 31 : 40. 1879. 
Exsiccati: Milleria herbatica Pk., on Rhynchospora macrostachya, Ell., 
N. A. Fungi, 805. 
Sori at the base of the spikelets of the inflorescence, apparently in 
the ovaries, one to several, forming conspicuous ovoid to subspheri- 
cal tumors about 5-15 mm. in length, covered with a thick whitish 
false membrane that ruptures irregularly at apex and discloses a 
usually firmly agglutinated black granular spore mass; false mem¬ 
brane composed of hyaline chiefly subspherical sterile cells rather 
firmly bound together, about 11-17 /x in diameter, often semigelatin- 
ized; spore balls black, chiefly ovoid to subspherical, composed of a 
superficial layer of numerous spores and an internal mass of thin 
walled semihyaline or brownish sterile cells averaging slightly 
smaller than the spores, 160-375 p in length; spores with very 
thick opaque wall having lighter colored reddish brown central part, 
chiefly ovoid to spherical, smooth or slightly granular, 13-16 p in 
length. 
Hosts : Rhynchospora macrostachya , N. Y. (type M. herbatica) ; 
Cyperaceae , N. Amer. (type). 
This is one of the most interesting of the Ustilagineae both on 
account of its spore structure and because of its rarity. It was 
originally described by Klotzsch in 1832 from material in the 
Hooker herbarium collected in North America and was made by 
