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Physarum diderma, Rost.
Sporangia sessile, adnate by a narrow base, globose, snoiu-wliite,
wall double, outer dense, fragile, tbick, cbarged witb lime, inner
thin, separated fo r some distance from the outer, the obsolete
columella composed of numerous angularly-globose granules of
lime; spores dingy violet, spinulose, 9— 10 g diameter.
Physaimm Diderma, Rost., Mon., p. 110; Saoc., Syll., vii., 9,
n. 1168.
Poland.
Tbe above imperfect description suggests tbe genus Chondrioderma
rather than Physarum.
Physarum lividum, Rost.
Sporangia crowded, sessile, subglobose or irregular, blackish,
thickly covered with small white particles of lime; columella
absent; spores globose or subangular, opaque, minutely asperu-
lose, 10— 12 g diameter; capillitium almost absent.
Physarum lividum, Rost., Mon., p. 95; Saco., Syll., vii., 1,
1169.
On fallen Opuntia. Sweden; Germany; Algeria; N.
America.
1 have no knowledge of tbe present species, which appears
to be too briefly described to insure future identification.
(Rostafinski’s Synonyms.)
Physarum griseum, Link, Diss. 11., f. 42 (1809).
Physarum effusum. Link, Herb. (1809).
Physarum conglobatum, Fr., Sym. Gast., p. 21, p.p. non Dit.
(1818).
Sprumaria licheniformis, Sz., Amer. Fung., n. 2364 (1834).
Did.ymium physaroides, M. FI. Alg., p. 412, non Fr. (1846).
Licea alba, Boug., Herb. (1846).
Physarum eonglomeratum, Mass. (figs. 210—212, 284—286).
Sporangia sessile on a broad base, convex above, crowded,
subangular from mutual pressure, wall double, outer containing
nmcli lime, rough, dirty ochraceous, breaking away irregularly,
inner membranaceous, grey; columella absent; mass of spores
blaokisb-violet; capillitium rather dense, flaccid, threads colourless,
2'5—3 g thick, irregularly anastomosing, nodes distant,
irregularly globose, file d with colourless granules of lime; spores
globose, dusky Yioleh, coarsely loarted, 11—13 g diameter.
Diderma eonglomeratum. Fries, Syst. Myc., iii., p. I l l (not
Physarum eonglomeratum of Rost., Mon., f. 90 ; Cke., Brit. Myx.,
f. 90; Saco., SylL, v., 7, n. 1184).
(Specimen from Fries in Herb. Berk., Kew.)
On bark. Britain (King’s Cliffe) ; Sweden.
Sporangia about ’5 mm. diameter. Capillitmm consisting of
long, thin, anastomosing internodes, nodes distant, subglobose,
without tapering rays, but giving origin at once to the tbin,
empty, flaccid internodes.
The above description is compiled from a specimen sent by
Fries to Berkeley, and marked in Fries’ handwriting, “Diderma
eonglomeratum, Fries, Suec. Lindberg.” The specimen is now
in the Berkeley collection in tbe Kew Herbarium. From the
above it will be seen that Rostafinski’s Physarum eonglomeratum,
which be considers to be the Diderma eonglomeratum of Fries,
is not that species at all, hence synonyms have not been given.
1 am not acquainted witb a species corresponding to Rostafinski’s
description.
Physarum sinuosum, Rost. (figs. 292, 293).
Plasmodiocarp laterally compressed, elongated, flexuous, or
irregularly anastomosing, lohite or ycllovjish, usually dehiscing by
a split along the upper, free margin, wall double, the outer
mostly converted into lime, brittle, the inner without lime,
grey; capillitium dense, knots containing lime large, numerous,
connected by short, thin portions; spores globose, brownish-
violet, variously but always very minutely verruculose, 8—9 g
diameter.
Pkysartim simcosum, Rost., Mon., p. 112, f. 91; Cooke, Brit.
Myx., p. 14, £ 91; Sacc., Syll, n. 1198 (E.xcl. Syn. Diderma
pallidum, B. and C.).