ll-rounded
and with some solidity. The interior fructification is gray throughout,
much less expanded than in _a_; in fact does not resemble _a_ at all!
The cortex is porose but firm, orange at first, but becoming tawny with
age, even in the herbarium. Bulliard figures it well, plate 380, Fig. 1,
and Sowerby's Fig. 1 on plate 399 is also good, as are also Greville's
figure 3 on plate 272 showing the two colors referred to. Not uncommon
in the forest from June till September, but far more rare than _a_:
always well-marked, with no other forms associated.

3. Form _c_, _F. laevis_ Pers.

This is a still more specialized type of the group. The fructification
is usually small, smooth, about an inch in diameter and sometimes nearly
as thick; the cortex rusty brown, enduring, persisting often when all
the sporiferous grayish mass has been distributed through chinks, or
from below. The figure 2 on plate X. shows this form. This also is a
forest species, is autumnal rather, but may be taken sometimes as early
as July. The cortex is not at all porose or spongy, in color reddish or
brown, fragile indeed, but not to the touch, in the herbarium enduring
for years.

4. Form _d_, _F. flava_ Pers.

PLATE X, Figs. 2, 2 _a_, 2 _b_.

This is hardly _F. flava_ of Persoon; rather of Morgan who uses
Persoon's specific designation. Persoon cites Bolton's fig. CXXXIV,
which is yellow indeed but is the ordinary presentation of _F. septica_.
The form here considered is remarkable for its delicacy; extremely thin,
perhaps one layer only of overlying elongate flexuous sporangia(?),
covered by the merest shadow of a cortex in the form of yellow dust,
soon lost: the capillitial structure yellow throughout; occurring upon
fallen logs in moist dark woods; not common.

5. Form _e_, _F. violacea_ Pers.

Plasmodium (Morgan _teste_) dark red, or wine-colored; the aethalium
thin, two or three inches wide, covered by a cortex at first dull red
and very soft, at length almost wholly vanishing, so that the entire
mass takes on a purple-violet tint, upper surface varied with white;
capillitium rather open, the more or less inflated, large, irregular
nodes joined by long, slender, delicate, transparent filaments; spores
dark violet, minutely roughened, spherical, about 7.5 mu.

Ohio, Tennessee. Probably everywhere, but not distinguished from 1.

Professor Morgan, who gave the genus under consideration much attention,
regarded _F. violacea_ as a f