shaped
portion at the base. The stipes very short, often entirely concealed by
the dense mass of sporangia, arising from a common hypothallus.
Capillitium of threads somewhat variable in thickness, 3-6 mic.,
repeatedly branched and forming a network of very unequal meshes, with
occasional clavate free extremities, pale to dark red in color; the
spiral ridges three or four, often irregular, thickened or interrupted
by minute warts and spinules. Spores in mass incarnate to brownish-red,
globose, even, 7-9 mic. in diameter.

Growing on old wood of Liriodendron. Sporangia usually in small patches,
each 1-2 mic. in length, the stipe very thin and short.

Sec.2. HEMITRICHIA. Capillitium of very long slender threads, simple or
remotely branched, and not forming a network, their further extremities
all free.

The threads of the capillitium in these species are usually much coiled
and entangled, but when straightened out they are seen to be very long,
but few in number, fixed at one end and free at the other.

5. HEMIARCYRIA LONGIFILA, Rex. Sporangium obovoid or pyriform, yellow,
stipitate; the wall a thin pellucid membrane, smooth and shining,
beautifully iridescent, breaking away above the middle, the lower
cup-shaped portion persistent. Stipe very short, reddish-brown to
blackish, arising from a common hypothallus. Capillitium of slender
threads, 3.5-4 mic. in thickness, golden yellow in color, simple or very
rarely branched; the free extremities obtuse or slightly swollen,
sometimes minutely apiculate; the spiral ridges, three or four, rather
distant, with very minute scattered spinules or nearly smooth. Spores in
mass, golden-yellow, globose, minutely warted, 9-10 mic. in diameter.

Growing on old wood of Oak, etc. Sporangium with the stipe .8-1.5 mm. in
height, the stipe very short, not exceeding the diameter of the
sporangium. A small species, distinguished by its golden-yellow spores
and capillitium.

6. HEMIARCYRIA FUNALIS, Morgan n. sp. Sporangium obovoid to turbinate,
yellow or olive yellow, polished stipitate; the wall firm, thickened on
the inner surface by an olivaceous layer, breaking away from above
downward, leaving an irregular cup-shaped base. Stipe short,
reddish-brown to blackish, arising from a thin hypothallus. Capillitium
of threads 6-8 mic. in thickness, yellowish-ochre or dull ochre in
color, simple or remotely branched; the free extremities obtuse or
swollen; the spiral ridges four or five, minu