196 Rhodora [OCTOBER 
eter. The fibrils at that time were inconspicuous. While drying, 
the plant emitted a faint odor, resembling that of the Phalloids. 
Now that the specimen is dry, the peridium is chamois to honey 
yellow? in color and the fibrils have become conspicuous as mummy 
brown filaments adhering to the peridium and ascending from the 
base to near the summit. The peridium is composed of more or 
less loosely interwoven hyphae and is 120 ü, thick; the gleba is cin- 
namon buff and broken up into irregular rounded cavities; septa 
narrow, 16-27 u broad, compact; basidia inconspicuous, borne at 
an acute angle to the septa, hyaline, 13-15 X 7 w; sterigmata 3-4.5 y. 
long; spores acrogenous, cream colored, broadly ellipsoidal, with 
truncate base, 6.8-7.2 X 3-4.5 u, smooth. 
This species, while externally resembling very closely R. occidentalis 
Z. & D., differs in many respects. It has a thinner peridium, made up 
of more loosely and irregularly interwoven hyphae, and has not the 
dense and more deeply colored surface layer; the septa are narrower 
and have not the specialized and deeply staining hyphae found in R. 
occidentalis; the basidia are broader, more inconspicuous, and are 
borne at an acute angle to the septa, while those of R. occidentalis 
are perpendicular to the septa; the spores are broader, in proportion 
to their length, than in the previously mentioned species and have a 
truncate base. For these reasons, the New Hampshire fungus is 
made a new species, as follows: 
Rhizopogon truncatus sp. nov.—Fructificationes subglobosae et 
irregulares, diametro 3 cm. metientes, citrinae recens lectae, odor 
languidus, Phallo duplicato similis siccus, “chamois” vel “honey 
yellow” (Ridgway); funiculi applicati, “mummy brown” (Ridgway) 
siccati; peridium tenue, 120 üu crassitudine, simplex, byssoideum, 
hyphis tenuibus contextum, “maize yellow” (Ridgway); gleba siccata 
“cinnamon buff" (Ridgway); locelli globosi aut irregulares vacui; 
septa 16-27 y crassitudine, hyphis hyalinis contexta; basidia late 
clavata, 13-15 X 7 u, hyalina, sterigmatibus longis, 34.5 w; sporae 
truncatae, late ellipsoidae, cremeae, 6.8-7.2 X 3-4.4 u, leves. 
Habitat sub foliis. New Hampshire. Aestate. 
Type in Farlow Herbarium. 
The writer wishes to acknowledge his indebtedness to Dr. C. W. 
Dodge whose collection was placed at his disposal for purposes of 
comparison. 
HARVARD UNIVERSITY. 
? Ridgway, R.—Color Standards and Nomenclature. Washington, D. C., 1912, 
used throughout for comparison. 
