Harper—Additional Species of Pholiota. 407 
the upper surface from the edges of the gills above forming 
an annular gill cavity. The free part of the veil is stretched 
into a thin semitransparent membrane extending from the 
margin of the pileus to the stem as in E. Continued expansion 
tears it from the margin of the pileus, D, and it remains as a 
thin papery annulus about the stem, F. It soon collapses 
and only a few fragments stained with spores remain on the 
mature plant, A and B. The upper portion of the partial 
veil which was not stripped from the stem by the expansion of 
the pileus becomes very thin as the superannular elongation 
of the stem continues and the ridges on its upper surface 
which closed the gill chambers are obliterated from the 
central portion remaining near the annulus and at the 
apex of the stem, H. Also vol. XVII, pi. LXVII. The 
superannular portion of the stem is at first somewhat floc- 
cose or furfuraceous from the remains of the partial veil 
just as the stem below the annulus is floccose from the re¬ 
mains of the universal veil. The superannular portion is, 
however, more finely furfuraceousand later becomes smooth 
and viscid like the subannular portion of the stem. As in 
Pholiota dura the ridges on the upper surface of the annulus 
are often dusted with spores and the remains of the annulus 
seen on the stem are usually blackened with spores, otherwise 
they are mostly inconspicuous. The edges of the gills remain 
white and floccose where they were torn from the veil. 
c. The gills are adnate to the stem and as the epinasty is 
wholly in the pilear area the bases of the gills are drawn down, 
the stem in decurrent teeth. The ridges of the partial veil 
extend up between the teeth for a short distance as in Pho¬ 
liota dura. In G the growing layer of the stem appears dark 
and connects with the subhymenial layer under the base of 
the gill chambers. The central portion of the stem is com¬ 
posed of white medullary tissue. The dying tissue widens 
at the apex of the stem, and connects with the medullary 
portion of the pileus. This is seen in a greater degree in 
species of Hypholoma. See pi. XXIII D. The stem becomes 
hollow in Stropharia semiglobata, C, but remains stuffed 
in Stropharia stercoraria. The group is remarkable for the 
great elongation of the stem which takes place in both the 
subannular and superannular areas. The annulus is often 
nearly medial. Such long slender stems are characteristic of 
Agarics which grow on dung. 
