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Spumaria granularia, Schum., FI. Saell., n. 1419 ; FL Dan.,
t. 1979, f. 2 (1803).
Spumaria minuta, Schum., FI. Saell., n. 1419 ; FI. Dan.,
t. 1979, f. 1 (1803).
Diderma vitellinum, Link, Herb.
Didymium glomeratum, Fr., Herb.
Didymium contcxtum, p. glomerulosum, Fr., Sym. Gast., p. 20
(1818).
Diderma eonglomeratum, Fr., I.e., iii., p. I l l (1829).
Diderma granulatum, Fr., I.e., iii., p. 110 (1821).
Diderma minutum, Fr., I.e., iii., p. I l l (1829).
Diderma rugulosum, Wein., I.e., p. 594 (1836).
Diderma flavum, Fr., in Wein., I.e., p. 593 (1836).
Leoearpus minutus, Fr., Sm. Veg. Scan., p. 540 (1849).
Leoearpus granulatus, Fr., Sm. Veg. Scan., p. 541 (1849).
Careerina conglomerata, Fr., Sm. Veg. Scan., p, 451 (1849).
P h y s a r u m r u h i g i n o s u m , Rost.
Sporangia gregarious, usually nearly globose, attached by a
broad or narrow base, wall do)Me, outer layer brittle, breaking
away in flakes, from dirty orange to clear vermilion, inner wall
very thin, grey; columella absent; capillitium copious, nodes
and interstitial swollen portions numerous, variable in size,
containing yellow or reddish grauules of lime ; spores dingy
violet, 10—13 g diameter, with a slight indication of being
verrtmdose.
Physartom ndjiginosum, Rost., Mon., p. 104 ; Sacc., Syll., vii.,
1, n. 1180.
On moss, &c. Sweden ; Finland ; United States.
Sessile, globose, 1—1'5 mm. diameter; distinguished by the
bright colour of the outer layer of the sporangial wall, the very
tbin, grey, inner layer, absence of columella and spores which
vary from being perfectly smooth to very minutely verruculose.
The granules of lime present on the outer wall of tbe sporangium,
wben examined under the microscope, are seen to be
mostly minute and yellow, amongst wbiob are a few scattered,
larger ruby-red lumps.
(Rostafinski’s Synonyms.)
Physarum rubiginosum, Fr., Sym. Gast., p. 21. non Chev.
(1818).
Leangium ruhiginosum, Fr., Stirp. Femsj., p. 83 (1825).
Physarum fidvum, Fr., I.e., iii., p. 143 (1829).
P h y s a r u m c o n t e x t u m , Rost. (figs. 276—283).
Sporangia sessile on a broad base, crowded, subglobose, reniform,
or elongated and variously interlocked, wall double, outer
thick, containing lime, varying from colourless to deep lemon-
yellow, inner tbin, yellowish; capillitium well developed, with
numerous, irregularly branched nodes containing lime, usually
tinged yellow ; spores globose, brownish-violet, minutely warted,
11—14 g diameter. •
Physarum contextum, Rost., Mon., p. 109; Cooke, Brit. Myx.,
p. 13; Raunk., Myx. Dan., p. 73; Sacc., Syll., n. 1185;
Schroeter, 130.
Exsicc.—Fckl., Fung. Rhen., 2400 (as Diderma, contextum,
Pers.); Ellis and Everh., N. Amer. Fung., ser. 11., 2086.
On moss, leaves, and bark. Britain (Shere, Kew, King’s
Cliffe); France; Germany; United States; Ceylon.
In some of its forms resembling Physarum eonglomeratum,
from which it is known by tbe denser capillitium of numerous
large, irregular knots containing yellow granules of lime, and
the larger sporangia usually of a pale lemon-yellow, sometimes
witb a very faint tinge of green.
(Rostafinski’s Synonyms.)
Diderma contextum, Pers., Obs., i., 89 (1796); Ditm., t. 39;
Cke., Hdbk., n. 1117.
Physarum contextum, Pers., Syn., 168 (1801).
Didymium contextum, Fr., Gast., p. 20 (1818).
Leoearpus eontextus, Fr., S. V. S., 450 (1849).
Chondrioderma contextum, Rost., in Fckl., Sym. Myo., ii., 74
(1873).
Diderma ochroleucum, B. and C., Grev., 343.