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Sis;
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thickenings; spores globose, violet, densely covered loith minute
ivarts, 10—14 g diameter.
Chondrioderma Oerstedtii, Rost., Mon., p. 184, figs. 154, 157;
Cooke, Brit. Myx.,' p. 41, figs. 154, 157; Saoc., Syll.. 1286;
Grev., vol. v., p. 12.
(Specimen named by Rostafinski in Herb, Berk.)
On wood, &c. Britain (Jedburgh); Germany.
I have not been able to observe the glistening glassy warts
described by Rostafinski as present on the sporangium. Distinguished
from G. radnatum by the absence of columella, and
from 0. Carmichaelianum in the presence of a stem.
Chondrioderma Incidnm, Cooke.
Sporangia subglobose, sessile, either scattered or crowded,
splitting in an irregular stellate manner, bright reddish-yellow;
internally yellow, mass of spores globose; capillitium brown,
irregular at the points of ramification, yellowish, spores globose,
violet-black, '0125 mm. ( = 12 /i) diameter, minutely eehinulate.
Ghondrioderma lucidum, Cooke, Myx. Brit., p. 42; Saco., 1288.
Diderma lucidum, B. and Br., Ann. Nat. Hist., n. 938, t. 15,
fig. 9; Cke., Hdbk., n. 1110.
On moss and Jungermannia.. Britain.
I have seen no specimen of the present species.
According to Berkeley’s figure the sporangium is sometimes
furnished with a short, distinct stem thickened upwards, the
sporangium may be spherical or considerably depressed; after
dehiscence the basal portion is persistent with an irregularly
toothed margin; an “ obscure columella ” is also present. May
not this be a form of G. radiatum ?
Sub-Gen. Ghondrioderma. Sporangium irregularly ruptured.
A. Columella present.
Chondrioderma Michelii, Rost. (fig. 312).
Sporangia springing from a well-developed more or less tom
iij'potliallus, stipitate or almost sessile, circular in outline,
discoid, thin, fiat or slightly convex above, rather concave below,
white or cream-coloured; the wall breaking away in irregular
patches above; stem equal, pale ochraceous or whitish, longitudinally
wrinhled, the ridges continuing on the under side of the
sporangium; in some specimens the stem is obsolete, and a
■ broadly extending plasmodiocarp, forming continuous patches,
or an irregularly branched anastomosing structure is produced ;
columella flattened, dingy red; mass of spores black with purple
tin g e ; threads of capillitium 1—2 g thick, pale or colourless,
forked, combining laterally to form a loose n e t; spores globose,
dingy lilac, smooth, 8—9 g diameter.
Chondrioderma Michelii, Rost., Fckl., Symb. Myo., Nach. 2,
p. 74; Rost., Mon., p. 172, figs. 131, 146, 149, 150; Cooke,
Brit. Myx., p. 37, figs. 131, 146, 149, 150; Saco., Syll, n. 1268;
Schroeter, p. 123.
Didymium Michelii, Lib., PI. Crypt. Ard., Faso. II., no. 180
(1832).
Dxsice.—Lib., PI. Crypt. Ard., Faso. II., n. 180; Fuckel,
Fung. Rhen., 2691; Ellis, N. Amer. Fung., 615.
On living or dead leaves, twigs, wood, &c.; some of the
specimens were found on horse-dung. Britain (specimen from
Sowerby’s Herbarium; Appin, N. B.); Sweden; Germany;
France; Belgium ; Ita ly ; United States; India.
Sporangia 1—1'5 mm. diameter. Resembling an Agaric
in miniature; the stem is sometimes obsolete, and then the
sporangia frequently coalesce in series of three or four. In
the Indian form there is a very thin oohraceous inner pellicle
without lime; in every other respect it agrees with the typical
state of the plant.
(Rostafinski’s Synonyms.)
Diderma eontortum, Hoffm., t. 9, f. 2a (1795).
Beticularia contorta, Poir., Ency., vi., 182.
Beticularia hemispherica. Sow., t. 12 (1797).
Physarum depressum, Schum. Saell., No. 1439 (1803); FI.
ban., t. 1972, f. 2.