1918] 
ZELLER AND DODGE—RHIZOPOGON 7 
funiculi inconspicui, superne fere desunt, aut innati-applicati sunt, 
inferne breves sed magni, leves, fere politi, “light seal-brown" (Ri 
way); peridium crassum, 440-1000 д, duplex, strato extero facile 
ab intero separante, pannis relictis, 200—500 д crassitudine, hyphis 
laxe implexis, ‘‘vinaceous-russet” (Ridgway) sub lente, strato intero 
240-600 , crassitudine, compactiore dilutioreque extero, hyphis 
granulosis contexto, “Corinthian red" (Ridgway) extus, vel cremeo 
intus; gleba “light buff" (Ridgway) siccata, coriacea; locelli sub- 
globosi vel irregulares, vacui; septa 100 д crassitudine, hyalina, 
hyphis septatis laxe implexis, subscissilia; basidia hyalina, 7-816 
и, mono- vel pluri-sporifera, oblonga, sterigmatibus 3-5 д longi- 
tudine; sporae acrogenae, hyalinae vel cremeae acervatae, ellip- 
soideae, 7-93-5 д, 1-2-guttulatae, leves. 
Habitat in viis. America occidentale. Aestate. 
Type: in Zeller Herb. and in Dodge Herb. 
Fructifications cespitose, subpyriform to depressed globose 
and irregular, 1.5-3 cm. in diameter, from russet-vinaceous 
to sorghum-brown and light seal-brown where bruised, the 
sorghum-brown patches of the outer peridial layer being iso- 
lated as this layer cracks; fibrils inconspicuous, almost en- 
tirely wanting above to innate-appressed below, where they 
are short but large, appearing as large, smooth, almost shiny 
ridges, light seal-brown; peridium thick, 440-1000 y, duplex, 
thick sections more or less claret-brown under the microscope, 
the outer layer easily separable from the inner, sloughing off, 
leaving patches 200-500 д thick, of loosely woven hyphae, 
vinaceous-russet under the microscope, inner layer 240-600 y 
thick, more compact and lighter than the outer layer, made up 
of granular hyphae, from Corinthian red in the outer part 
to creamy within; gleba light buff when dry, coriaceous; 
cavities averaging 5-6 per mm., subglobose to irregular, 
empty; septa average about 100 џ broad, hyaline, composed 
of loosely woven, septate hyphae, more or less scissile; 
basidia hyaline, 7-8 16 и, 1-several-spored, oblong; sterig- 
mata one-half as long as spores; spores acrogenous, hya- 
line to cream-colored in mass, ellipsoid, 7-93-5 и, 1-2-gut- 
tulate, smooth. 
In trampled roadways. Pacific Coast. Early summer. 
В. pannosus, although quite closely related to В. Briardi, 
is a distinct species. The isolated patches of the outer pe- 
ridial layer are much more conspicuous than in R. Briardi 
