Waite: THE NIDULARIACEAE OF NortH AMERICA 271 
The following is extracted and translated from Tulasne’s more 
extended description of this species: The inner white evanescent 
pellicle is a remnant of the mucilaginous matter which fills the cup 
in its early stages. The sporangioles are accumulated in large 
numbers in a space apparently too small to contain them. They 
are covered with a thick fibrous coat which can be peeled off, and 
when deprived of this the sporangiole is black and of a horny con- 
sistency. It is composed of two parts, a thick and much inter- 
woven darker outer part, and an inner hyaline portion com- 
posed of irregularly shaped filaments taking the place of basidia 
and forming a hymenium of which the surface is nearly uniform. 
The rest of the inner substance is composed of the spores 
without any filaments, which fact distinguishes these sporangioles 
from some of those belonging to species of Cyathia. The funic- 
ulus of Crucibulum is much more simple than that of Cyathia 
hirsuta, being composed of a little bunch of elastic filaments 
gathered closely together in a very thin, transparent outer cover- 
ing, which is hardly noticeable, and of an equal filet, about 2-3 
mm. long, which expands itself at the base into the inner wall of 
the peridium. 
III. Nidula gen. nov. 
Peridium composed of a single homogeneous, but layered mem- 
brane which is at first. continuous over the mouth much as in 
ructbulum ; sporangioles very numerous, at first immersed in a 
glutinous substance, very closely packed, entirely filling the centr al 
Cavity and in no way attached to the peridium wall ; no filaments 
intermixed with the spores. 
Pp +4. . 
eridium shaggy-tomentose; sporangioles light-colored, 2 mm. wide. 
1. XV. candida. 
“ 
Peridiuns «mi ? 
— minutely tomentose ; sporangioles dark-colored, barely 1 mm. wide. . 
2. WV. microcarpa. / 
1. Nidula candida (Peck) 
Nidwaria candida Peck, Reg. Rep. 45: 24. 1891. 
Peridia 6-1 5 mm. high, 6-15 mm. wide at the top, 5-10 mm. 
Ethie base, cylindrically cup-shaped, somewhat truncate at the 
lik } outer surface white, becoming dingy with age, thick, felt- 
Z shaggy -tomentose ; inner surface smooth, at first snowy white, 
ming brownish with age, somewhat shiny ; mouth entire, firm, 
pew hat sp reading but-not recurved ; sporangioles I.5-2 mm. in 
por tet light grayish fawn-colored, very thin, flattened, both sur- 
