The Myxomycetes of the Miami Valley, OhioMorgan, A. P. (Andrew Price)
Science
The Myxomycetes of the Miami Valley, Ohio
Morgan, A. P. (Andrew Price)
Myxomycetes -- Ohio -- Miami River Valley
1. LICEA VARIABILIS, Schrad. Plasmodiocarp not much elongated, usually
scattered, sometimes closer and confluent, somewhat depressed, the
surface uneven or a little roughened and not shining, reddish-brown or
blackish in color; the wall a thin, firm pellucid membrane, covered by a
dense outer layer of thick brown or blackish scales, rupturing
irregularly. Spores in mass pale ochraceous, globose or oval, even or
nearly so, 13-16 mic. in diameter.
Growing on old wood. Plasmodiocarp 1-1.5 mm. in length, though sometimes
confluent and longer. The wall is thick and rough, not at all shining.
It is evidently the species of Schweinitz referred to by Fries under
this name.
2. LICEA LINDHEIMERI, Berk. Sporangia sessile, regular, globose,
gregarious, scattered or sometimes crowded, dark bay in color, smooth
and shining; the wall a thin membrane with a yellow-brown outer layer,
opaque, rupturing irregularly. Spores in mass bright bay, globose,
minutely warted, opaque, 5-6 mic. in diameter.
Growing on herbaceous stems sent from Texas. Sporangia about .4 mm. in
diameter. The bright bay mass of spores within will serve to distinguish
the species. The thin brown wall appears dark bay with the inclosed
spores.
3. LICEA BIFORIS, Morgan, n. sp. Sporangia regular, compressed, sessile
on a narrow base, gregarious; the wall thin, firm, smooth, yellow-brown
in color and nearly opaque, with minute scattered granules on the inner
surface, at maturity opening along the upper edge into two equal parts,
which remain persistent by the base. Spores yellow-brown in mass,
globose or oval, even, 9-12 mic. in diameter. See Plate III, Fig. 1.
Growing on the inside bark of Liriodendron. Sporangia .25-.40 mm. in
length, shaped exactly like a bivalve shell and opening in a similar
manner. I have also received specimens of this curious species from
Prof. J. Dearness, London, Canada.
4. LICEA PUSILLA, Schrad. Sporangia regular, sessile, hemispheric, the
base depressed, gregarious, chestnut-brown, shining; the wall thin,
smooth, dark-colored and nearly opaque, dehiscent at the apex into
regular segments. Spores in the mass blackish-brown, globose, even,
16-18 mic. in diameter.
Growing on old wood, Sporangium about 1 mm. in diameter. On account of
the color of the spores the genus _Protoderma_ was created for this
species by Rostafinski. It is number 2,316 of Schweinitz's N. A. Fungi.
II. TUBULINA, Pers. Sporangia cylindric, or by mutual pressure becoming
prismatic, distinct or more or less connate and æthalioid, the apex
convex, seated upon a common hypothallus; the wall a thin membrane,
minutely granulose, firm and quite persistent, gradually breaking away
from the apex downward. Spores abundant, globose, umber or olivaceous.
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