oth authors adopt the later name given by Albertini
and Schweinitz, simply because of the excellent detailed description
found in the _Conspectus_.

2. AMAUROCHAETE TUBULINA (_Alb. & Schw._) _Macbr._

PLATE XX., 6 and 6 _a_.

1805. _Stemonitis tubulina_ (Alb. & Schw.), _Cons. Fung._, p. 102.
1825. _Lachnobolus cribrosus_ Fr., _Syst. Orb. Veg._, p. 14.
1912. _Amaurochaete cribrosa_ (Fr.) Macbr., _Com. in litt._
to Herbaria, Harvard, etc.[35]
1917. _Amaurochaete cribrosa_ (Fr.) Sturg., G. Lister, _Jour. Bot._,
LVIII, p. 109.

Plasmodium at first transparent then white then rosy, ashen or grey
finally deepening to jet-black; the aethalium even, thin, variable in
extent from one to ten centimeters, covered by a distinct but thin
transparent cortex, papillate, extended laterally but a short distance
beyond the fructification, fragile, soon disappearing; hypothallus
long-persistent, thin, silvery, supporting the capillitium as if by
stipes, short slender columns, irregular plates, expansions, etc.; the
capillitium an intricate network, very abundant, elastic, on fall of the
peridium appearing like tiny tufts of wool, the meshes large, but formed
as in _Stemonitis_, persistent, dull black; spores, under the lens, dull
olivaceous black, minutely roughened, 12-14 mu.

This species differs from the preceding, already well known, especially
in the capillitial characters. In the older species the capillitial
branches fray out, and are only sparingly united into a net extremely
lax. In the present form the net is the thing, common to all sporangia.
The total effect is to lend to the blown-out aethalium a woolly
appearance, entirely unlike that of its congener under the same
conditions. But until fructification is quite mature, the presence of
the collaborating sporangia below is indicated, suggested, by the
papillose upper surface.

The amaurochetes are remarkable in that they appear upon coniferous
wood, logs or lumber, to all appearance undecayed. The species just
described developed abundantly in August on the recently decorticated
logs of _Pinus ponderosa_, on the south-western slopes of Mt. Rainier,
Washington. In logging operations in the locality referred to, the trees
are felled often at considerable distance from the mill. They are not
infrequently large, 75-120 cm. in diameter. The logs are dragged along
the ground, the transportation facilitated by removal of the bark from
the new