r surface of the
sporangium, soon breaks up into irregular patches. Stipes long, erect,
usually simple, rarely fasciculate and connate. Mass of capillitium and
spores, bright yellow; elaters simple, cylindric, 4 mic. in thickness,
ending in smooth points, 4-6 mic. long; spirals four, often united by
intervening branches, covered with numerous irregular spinules. Spores
globose, minutely warted, 12-14 mic. in diameter.

Growing on old wood and bark, Adirondack Mountains, New York, Dr. Geo.
A. Rex. Sporangium .5-.8 mm. in diameter, the stipe about 1 mm. in
height. This Trichia is conspicuous by the checkering or areolation of
the upper surface in the mature sporangia, affording a sharp contrast
between the brown patches and the yellow bands.

Sec.2. CHRYSOPHIDIA. Sporangia globose, obovoid or somewhat irregular,
sessile, rarely with a short stipe, usually closely crowded. Spores
globose, the surface minutely warted.

_a. Elaters perfectly smooth._

5. TRICHIA VARIA, Pers. Sporangia globose, obovoid or somewhat
irregular, gregarious and scattered or crowded, yellowish, ochraceous or
olivaceous, sessile, or with a very short brown or blackish stipe. Mass
of capillitium and spores yellow; elaters long, simple or sometimes
branched a time or two, 4-5 mic. in thickness, ending in a smooth
tapering point, 8-12 mic. long; spirals only two, smooth, very prominent
in places, causing the elater to appear notched. Spores globose, oval or
somewhat irregular, minutely warted, 10-14 mic. in diameter.

Growing in patches on old wood; a very common species. Sporangium .6-.8
mm. in diameter, or when irregular sometimes elongated to 1 mm. or more.
Extremely variable as to the form of the sporangium, but readily
recognized by its elaters.

6. TRICHIA ANDERSONI, Rex. Sporangia globose or obovoid, sessile,
gregarious, closely crowded, or sometimes scattered, the wall thickened
with minute scales, in color brownish-ochre or olivaceous. Mass of
capillitium and spores yellow; elaters long, simple, 3-4 mic. in
thickness, ending in a very long flexuous point, 14-18 mic. in length;
spirals three or four, winding evenly and closely, perfectly smooth.
Spores globose, minutely warted, 10-12 mic. in diameter.

Growing on the inside of bark of Acer. Sporangium .4-.5 mm. in diameter.
The capillitium is deep orange and the spores olivaceous, but this
difference in shade of color between spores and capillitium occurs in
other species. _Trichia adve