270 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^. 
branch* s, consisting of a single basal cell, from which arises the stalk-cell of the perithecium on the inner, 
and that of the anthcridimn on the outer side. Stalk-cell of the perithecium narrowed at the base, the 
brown 
expanding above and hyaline. Perithecium somewhat asymmetrical or bent, 
deeper straw-colofedj tapering gradually to the blunt tip, which is hardly distinguished. Antheridium 
normal 
150-200 a. Perithecium 90-110 
Spores about 35 X 4 fi. 
( >n the abdomen of Howahta sp., infesting species of Lactarius, Kittery Point, Maine. 
This is a rather rare species, occurring near the tip of the abdomen of one of the larger mycophilous 
ll())IHll<)t(V. 
II 
and single primary appendage, which is distinguished at its base by a black septum. It is subject to 
some variation, the more normal form represented in the figures, being often modified through the pro- 
duction of only one perithecium or of more than two. The red brown suffusion at the base of the perithe- 
cial stalk-cells is also peculiar. 
Mon'oioomtcbs nigrescexs Thaxter. Plate XXXVI, figs. 1-4. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 10. June, 1902. 
Receptacle minute, its basal cell hardly distinguishable above the foot, bearing distally a simple 
appendage the basal cell of which is hyaline, the subbasal somewhat longer than those above and deeply 
tinged with blackish brown below. Fertile branches two or more, usually four, each consisting of a single 
cell which bears an antheridium terminally and a perithecium subterminally: the primary branches 
normally two, lateral and sym metrical, edged externally with blackish brown, the blackening contrasting 
and continuous with a similar coloration which extends to the tip of the primary antheridium : the second- 
ary fertile branches arising, when present, between the primarv and resembling the latter, except for the 
absence of the black discoloration; the whole group of branches forming, with their closelv crowded 
anth.ndia and penthecia, a compact, fan-like, usually symmetrical tuft. Antheridia relatively long, 
unused with smoky brown, more deeply blackish externally, the secondary ones with a more or less con- 
picuous foot-like blackened base; the stalk clearly two-celled, shorter than the main body; only two of 
the cells separated from distal cells growing upward to form two unequal terminal appendages, which are 
smoky brown darker about their blackened basal septa, the cells immediately below them projecting up- 
ward very s hghtly on either side. Peritheeia furnished with variably developed stalk-cells the bases of 
Z 7 7 P<™ecium. Penthecia 60-75 X 22-25 ju; the stalk-cell 12-55 p, Antheridia 
including stalk, 3o ft the appendages 35-50 (L Total length 100-160 t , 
Poini Ahin! P °Tl lK ' t 'JT ° f Cah(Irm SP - and ° f TaChyUm ** Intervale ' N - H -> No - 1357 ' Kittt ^ 
I omt, Maine. 1 he hosts frequenting fleshy fungi. 
funJbutr^iV 8 n °V mCOn ;T 7 mbute sta P h Minids inhabiting decaying Lactani and other fleshy 
^^^r^tttbt m r e r h T * k r " to ■* it is possib,e that 
some cases .. I,., , ,1 * • ?• A '"> chara: trom *c proliferation of the primary ones, but in 
LXd aiTn ' "n 1 *"* ***** '""" "* ****** «■ ot "■ »«l*«*- The speeies is 
v «"n«rked and recognizable from its marginal suffusions. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 24.' June MM ' 
.c™in*a;^d r a^tnnil° I r?; ber ; b r 11 -, i*"* t0 « e,h " with "» '«»' »«» ** basal ell of the 
guiAed fro,,, its br„a, b T ,, f Zrf'Z ° u he Primary appe " da 8 e •** is *">& distin ' 
wise, giving rise to two f 1 b r,n I , ' ° f "" rCCeptaclc Smal1 ' trian « ul » r »*« ™ wed side " 
k g u rt,le branches, the short small basal cells of which give rise at onee each to two 
