1918] 
ZELLER AND DODGE—RHIZOPOGON 9 
Туре: in Zeller Herb. and Dodge Herb. 
Fruetifieations subglobose to olive-shaped, 1-2 em. in diam- 
eter, shrinking to almost nothing on drying, color pale 
grayish vinaceous to vinaceous-brown, drying to dark vin- 
aceous-brown, mottled with dirty white patches due to the 
partial sloughing off of the outer peridial layer; fibrils few 
and conspicuous, rhizomorph-like below to innate-appressed 
over the sides, disappearing above, vinaceous-brown or 
darker; peridium thin, 20-60 y thick, duplex, the outer layer 
of loosely interwoven, hyaline hyphae, easily separable from 
the inner layer, which is darker, ochre-red, compact, about 
one-half the thickness of the outer layer; gleba white when 
fresh to grayish and bony hard when dry ; cavities narrow and 
irregular, empty; septa average about 40 д thick, hyaline, 
made up of much gelatinized hyphae, not scissile; basidia in- 
conspicuous, mostly 4-spored; sterigmata about 3 џ long; 
spores acrogenous, hyaline, subfusiform, 7-10»(3-4 y, 2-gut- 
tulate, smooth. 
n sand under conifers. California. Spring. 
R. maculatus is like R. Briardi and R. pannosus in that 
the peridium is duplex and the outer layer is partially 
sloughed off in patches, and it is also closely allied to R. di- 
plophloeus and R. angustisepta in that it has a duplex pe- 
ridium. 
Specimens examined: 
California: San Francisco, N. L. Gardner, type (in Zeller 
Herb., 1382, and Dodge Herb., 834). 
2. Rhizopogon viridis Zeller & Dodge, sp. nov.! 
Fructificationes oblatae-sphaeroideae, 1x2 em. metiens, post sic- 
candum non contractae, “citrine-drab” vel ‘“olivaceous black (1)” 
(Ridgway), siccatae saturatiores, superficie maculata, superne squar- 
rosa; funiculi pauci, innati- applicati, non prominentes, nigri; pe- 
ridium crassum, и crassitudine, duplex, stratum exterum 
100-200 y, crassitudine, “Vandyke brown” (Ridgway) sub lente, 
hyphis magnis septatis laxe M ori stratum interum stuposum, 
200-300 y сше, “Sayal brown” (Ridgway); gleba servata 
“olive?” vel “deep olive” (Ridgway), siccata saturatior; locelli sub- 
= vel алы Ген vacui; septa 30-35 y crassitudine inter hyme- 
e specimens of Rhizopogon viridis came to us after the paper was in press 
and thus too late to insert drawings. 
