[Vor. 4, 1917] 
236 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
collapsed, tapering upward to a sharp point, 144-3 и in diam- 
eter, protruding 8-18 и, about 1-3 to a granule at the apex; 
basidia simple, cylindric-clavate, with 4 sterigmata reduced to 
mere points; basidiospores hyaline, even, 5% X 215 и, flat- 
tened on one side. 
Fructifications 3-5 em. broad, extending from the ground 
upward on sugar cane, in some cases 20 em. or more and some- 
times wholly surrounding the canes. 
On living stalks of Saccharum officinarum and Paspalum. 
Porto Rieo. December to February, May, June, and Octo- 
ber—spore-bearing basidia found only in October and Febru- 
ary collections. 
This species is thinner than O. Sacchari and is composed of 
shorter-celled hyphae which are not suberect, not nodose-sep- 
tate, and do not bear spores in the interior of the fructifica- 
tion. The stellate crystals are present abundantly in all speci- 
mens which have been received and appear to be of aid for the 
recognition of this species, especially so if the specimen is 
young. 
Specimens examined: 
Porto Rico: Rio Piedras, J. A. Stevenson, 3176, type, 564, 
2657, 2657а, 3617, 6213 (іп Mo. Bot. Gard. Herb., 10232, 
9896, 6565, 8371, 10247, 54789 respectively); Canovanas, 
J. А. Stevenson, 5502 (in Mo. Bot. Gard. Herb., 9502). 
