are slightly more slender, averaging abeat 
i917] SAWYER—PHOLIOTA 209 
in the hymenophore are slender and somewhat pointed; they show 
a tendency to aggregate themselves at the tips into groups or tufts, 
with the ends of several hyphae in each tuft, and the different tufts 
separated by narrow interstices, so that the primordium often 
presents a rough and jagged appearance in this stage of its develop- 
ment. 
BLEMATOGEN.—In the youngest fruit body sectioned (fig. 1) 
the universal veil consists of hyphae which push up at the apex and 
turn downward in all directions. There is little doubt that if 
younger stages had been available for study, a condition would 
have been found similar to that in the very young fruit bodies of 
P. flammans, where the hyphae in the beginning are loose and 
radiate from all over the surface of the basidiocarp (fig. 24). In 
the stage shown here, however, the development has proceeded to a 
condition where the hyphae of the lateral surface of the fruit body 
have taken on a direction of growth parallel to the axis of the stem - 
fundament; a central core or strand of hyphal threads in the apex 
grow upward more rapidly than the surrounding tissue, and by 
curving backward and downward form a covering, which is the 
oe Over the entire surface of the fruit body. The hyphal — 
sei thus ¢ Sues ae outside become enlarged and ee : 
ae Poke ae POSTS ey ae 
are 3-5 u in diameter near the. base, and in —— region they — : 
the hyphae of the blematogen layer pie ee sees: dag 
. 8-15, # in diameter. The | cond dition anaepe here is Louie 
