[Vor. 1 
358 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
slender, minutely downy, pale mouse-gray; hymenium colored 
like the pileus, remotely ribbed, with the ribs radiating from 
the stem, thin, branching; spores colorless, even, 5-7 x 4-53 и. 
Fructification 2 cm. high; pileus 1 em. broad, 13 mm. long; 
stem 7 mm. long, 3 mm. thick, enlarging to 1 mm. where joining 
the pileus. 
In moss. Labrador. August 8, 1908. 
The above description is based on the single dried specimen 
collected by the Bryant Labrador Expedition. Тһе small size, 
regular obconie form, and very pale color of the membranaceous 
pileus and the slender stem are characters making C. borealis 
clearly distinct from other species of Craterellus. 
Specimens examined: 
Labrador: Gready Harbor, Gready Island, Owen Bryant, type 
(in Farlow Herb.). 
CYPHELLA 
Cyphella Fries, Syst. Myc. 2: 201. 1823. 
Fructifications somewhat membranaceous, cup-shaped, rarely 
plane, adnate behind, commonly extended in stem-like form, 
pendulous; hymenium typically concave or disk-shaped, defi- 
nitely inferior in the pendulous species, even or at length rugu- 
lose; basidia typically four-spored; spores subovate or globose, 
hyaline, rarely colored. 
C. digitalis Fries is the type species of this genus. 
The fructifications of all our North American species are com- 
paratively small, ranging in diameter from a fraction of a milli- 
meter for some species to five to fifteen millimeters for those 
of the largest species. Тһе fructifications are produced оп 
the bark of small rotting twigs on the ground and on dead herb- 
age, and can only be distinguished from small Pezize by dem- 
onstrating basidia rather than asci in the hymenium. This 
demonstration is simply made by crushing under a cover glass 
& portion of a fructifieation in water containing a little seven 
per cent solution of potassium hydrate, and then examining 
the preparation with the compound microscope. Тһе basidia 
are usually four-spored; in a few species I have as yet been able 
to detect only two-spored basidia. 
Cyphella is closely related to Solenia by such species as C. 
fasciculata and C. mellea, but is separated from it in such cases 
