ngth. It is readily distinguished by its small nodules
in the capillitium, which are invariably of a dull, brownish-ochre
color.

3. CRATERIUM RUBESCENS, Rex. Sporangium subcylindric or elongated
cyathiform, stipitate; the apex convex, at maturity separating by an
irregular line in a circumscissile manner. The wall dark violet-red,
smooth, except at the upper portion, which is slightly roughened by an
external deposit of scattered lime-granules of a pale, lilac color.
Stipe short, violet-black, wrinkled longitudinally. Capillitium of
tubules forming a loose, irregular net-work, bearing large, violet-red
nodules of lime which are often confluent in the axis of the sporangium.
Spores globose, minutely warted, dark violaceous, 7-9 mic. in diameter.

Growing on old wood, leaves, etc. Sporangium .6-.8 mm. in height
including the stipe and .5-.6 mm. in diameter, the stipe one-half the
height of the sporangium. The species is distinguished by the color,
which exhibits some shade of red or violet-red in every part of its
structure.

4. CRATERIUM MINIMUM, B. & C. Sporangium cylindric or turbinate
cylindric, stipitate; the apex convex, separating in a regular
circumscissile manner by a lid. The wall a thick, yellow-brown
membrane, most of the outer surface covered with minute, white granules
of lime, the basal portion naked. Stipe very short, plicate, red-brown,
arising from a small hypothallus. Capillitium of tubules forming a loose
net-work bearing large, irregular, white nodules of lime, sometimes
confluent in the axis of the sporangium. Spores globose, very minutely
warted, violaceous, 7-9 mic. in diameter.

Growing on old leaves, herbaceous stems, etc. Sporangium together with
the stipe 1-1.5 mm. in height and .25-.35 mm. in thickness, the stipe
.2-.4 mm. in length. This is a common species everywhere in the United
States, and perfectly distinct from _Craterium convivale_. It is
_Craterium cylindricum_ of Massee's monograph, according to Lister.

Sec.2. CUPULARIA, Link. Sporangium irregularly dehiscent, breaking up and
gradually falling away from the apex downward.

_a. Stipe shorter than the sporangium._

5. CRATERIUM CONVIVALE, Batsch. Sporangium obovoid or oblong-obovoid,
stipitate; the wall hyaline, thin and fragile above, the lower portion a
thickened and brownish membrane, the surface, usually most of it,
covered with minute white granules of lime, the base naked and brown.
Stipe very short, erect, red-brown, p