1917] 
BURT—MERULIUS IN NORTH AMERICA 347 
Merulius lacrymans forma terrestris Ferry, Rev. Мус. 17: 72. 
1895. | 
thin, drying amber-brown, Ше subiculum and margin whitish; 
hymenial surface with slightly elevated, obtuse, gyrose folds 
between which are shallow, labyrinthiform de- 
pressions; in structure 600-1000 „ thick, D () 
2-layered, with (1) а layer 200 д thick next L) 
to substratum, of loosely interwoven, thick- Fig. 29 
walled, rigid hyphae 44-6 р in diameter, М. terrestris. 
Spores Х 870. 
nodose-septate, aniline-yellow under the micro- see pl. 21, f. 27. 
scope, and with (2) a broad layer of hya- 
line, thin-walled, often collapsed hyphae 3 и in diameter, 
which bear the basidia; no cystidia; spores aniline-yellow 
under the microscope and concolorous with the hyphae next 
to Ше substratum, even, 7-9»x(41-6 и. 
Fructification 3-10 em. in diameter. 
On earth walls of cellars and in greenhouses. Massachu- 
setts to Nebraska. October and November. 
Although originally published as a variety of M. lacrymans, 
M. terrestris has nothing in common with that species. The 
configuration of the hymenial surface of M. terrestris is daed- 
aloid, with very slightly elevated folds and shallow depres- 
sions; the color is bright ferruginous (amber-brown of Ridg- 
way) ; the fructification is thin and not fleshy; and the spores 
distinctly brighter-colored than those of M. lacrymans. The 
several collections of M. terrestris which are known agree 
well in the characters enumerated. 
Specimens examined: 
Vermont: Middlebury, C. G. Lloyd, 10619 (in Lloyd Herb.). 
Massachusetts: greenhouse of Botanic Garden, Cambridge, 
E. A. Burt. 
Michigan: Alma, C. A. Davis, type (in Coll. N. Y. 
State). 
Nebraska: Lincoln, V. B. Walker, 1 (in Mo. Bot. Gard. Herb., 
15861). 
