[Vor. 4 
346 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
eystidia; spores even, 96 и, olive-yellow in lactic acid under 
the microscope, bone-brown in a spore collection. 
Fructifications 3-15 em. in diameter. 
Under side of coniferous logs and boards in moist places. 
Canada to Louisiana and westward to Montana. June to 
January. 
M. americanus has hymenial configuration and coloration 
like M. lacrymans, but is always resupinate, very thin, dry 
rather than fleshy, and in its structure is composed of two 
quite distinct hyphal layers not graduating into each other, 
of which the layer composed of intermixed colored and hya- 
line hyphae is loosely interwoven and next to the substratum. 
M. brassicaefolius has its hymenium with a broad marginal 
portion as even as that of Coniophora arida and with the 
hymenial dissepiments never grown out into teeth. 
Specimens examined: 
Exsiccati: Ravenel, Fungi Am., 134, type distribution. 
Canada: Ottawa, J. Macoun, 39 (in N. Y. Bot. Gard. Herb.). 
New York: Syracuse, L. М. Underwood (in Х. Ү. Bot. Gard. 
Herb.). 
Pennsylvania: Carbondale, Е. A. Burt. 
District of Columbia: Washington, С. L. Shear, 1284 (in Mo. 
Bot. Gard. Herb., 4079). 
South Carolina: Aiken, H. W. Ravenel, in Ravenel, Fungi 
Am., 134; Society Hill, М. A. Curtis (in Curtis Herb., under 
the name M. lacrymans). 
Louisiana: St. Martinville, 4. B. Langlois, an unnumbered 
specimen. 
Kentucky: Crittenden, C. G. Lloyd, 1408 (in Lloyd Herb.). 
Illinois: Chicago, L. H. Pammel (in Mo. Bot. Gard. Herb., 
4078). | 
Missouri: St. Louis (in Мо. Bot. Gard. Herb., 4061). 
Wyoming: A.Nelson (in N.Y. Bot. Gard. Herb.) ; Medicine Bow 
Mountains, 4. Nelson, 9673 (in Mo. Bot. Gard. Herb., 43754). 
31. M. terrestris (Peck) Burt, n. comb. 
Merulius lacrymans var. terrestris Peck, N. Y. State Mus. 
Rept. 49: 45. 1897. (Botanist’s edition p. 31, 1896). — Not 
