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whitish; columella subglobose, white or pale yellow; capillitium
sparse, delicate, whitish or slightly coloured; spores irregular,
angular, blackish in the mass, '00035'—'0005' long.
Didymimn angulatum. Peck, 31st Report, State Mus., p. 41;
Saco., Syll., 1312.
Fallen leaves. Adirondack Mountains. Aug.
1 have no knowledge of tbe present species except from the
above description from Peck.
Didymium Paraguayense, Speg.
Sporangia at first globose or elliptico-elongated, '5—1 x '5 mm.,
sessile, rarely shortly substipitate, deep violet, springing from
a brown, mucedinous, very thin hypothallus, then hemispherical
or reniform, 1—2 mm. long by '8—1 mm. high, sessile, su b -'
.repens, wall white, thick, cracked or breaking up in flakes;
mass of spores fulvous or pale buff; threads of capillitium very
thin, hyaline, not evanescent; spores globose, perfectly smooth,
pale olive brown, or tobacco-colour, 7—8 g diameter. Grauules
of bme very numerous, minute, hyaline, globose, or irregularly
angular.
Didymium Paraguayense, Spegazzini, Fung. Guaranit., n. 320.
On fallen leaves and decayed wood. Guarapi.
Didymium daedaleum, B. and Br.
Sporangia connate, sinuous, forming a daedalioid mass, reddish-
brown inclining to orange like tbe stem, sprinkled witb white
meal; stem connate, as if composed of a bundle of little flat
membranes; capillitium white, very variable in uridth, being in
parts broad, flat, membranous; spores violet-black, globose,
smooth.
Didymium daedaleum, B. and Br., Ann. Nat. Hist., n. 385,
p. 336 (1850); Cooke, Hdbk., n. 1131; Cooke, Myx. Brit,,
p. 35; Saco., Syll., vii., 1, n. 1313.
In a cucumber frame. Britain.
There is no specimen of the present species in the Berkeley
Herbarium, hence I am unable to add anything to tbe above
somewhat imperfect description.
Didymium connatum, Pock.
Peridium depressed or subglobose, cinereous, furfuraceous,
stipitate; stems mostly connate at the base, tapering upward,
longitudinally wrinkled, whitish or cream-colour; spores subglobose,
black, '0004 in. in diameter.
Didymium connatum. Peck, 26th Report, N. Y. State Mus.,
p. 74.
Physarum polymorphum, Sacc., Syll., vii., 1, n. 1196.
Decaying fungi. Portville, U. States.
The subfasciculate mode of growth is characteristic of this
species. (Peck.)
Unknown to me. In Saccardo’s Sylloge the present species
is given as a synonym of Physarum polymorphum, but tbe
description above does not justify this, and it is very doubtful
whether the type specimen has been examined by Berlese,
Didymium flavidum, Peck.
Peridium subglobose, sessile, thin, yellow, clothed witb a
minute yellow mealiness; spores subglobose, black, '0004' in
diameter.
Didymium flavidum. Peck, 28th Report, N. York State Mus.,
p. 54.
Physarum flavidum, Berlese, Saoc,, Syll., vii., 1, n. 1215.
Bark of dead balsam trees, Abies balsamea. North Elba; U.
States.
Lepidoderma, De Bary.
Sporangia sessile or stipitate or a plasmodiocarp, wall furnished
externally witb large scales consisting of bicarbonate of
lime, superficial or enclosed in lenticular cavities of tbe membrane
; columella generally present.
Rost., Mon., p. 187; Cooke, Myx. Brit., p. 43; Sacc., Syll.,
vol. vii., p. 386.
Closely related to Didymium, and differing only in the fact
that the external coating of lime is broken up into large, persistent
patches, instead of forming a pruinose coating consisting