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* * Ep)isp)Grc reticulated.
Physarum eoneinnum, Mass. (figs. 22—24).
Gregarious or crowded, sessile on a broad or narrowed base,
globose, outer wall white, tbick, at first crust-like or continuous,
pulverulent, falling away in flakes and exposing tbe inner, thin,
iridescent wall; columella absent; capillitium dense, knots
large, irregularly stellate, white, connected by short, tbin internodes;
spores globose, dingy purple, with sligMly raised ridges
of various lengths anastomosing to feyrm an irregular network,
11—13 g diameter.
Diderma eoneinnum, B. and C., Grev., 1873, n. 343.
Ghondrioderma florifemne, Saoc., Syll., n. 1285 (in part.).
On moss and wood. Britain (King’s Cliffe); United States.
Sporangia about "5 mm. diameter; tbe outer chalky layer
is at first compact and somewhat resembles that characteristic
of tbe genus Ghondrioderma, but differs in being minutely
pulverulent and not porcelain-like. The British specimen
differs from tbe type in the Berkeley collection at Kew in
having tbe ridges on tbe epispore more decided, and forming
a more distinct reticulation. In tbe type tbe epispore is
furnished with a mixture of warts and bars, but the warts are
usually arranged in anastomosing lines. Saocardo’s synonym
is clearly due to some mixture of specimens, not, however,
present in the type specimen.
* * * Epispore smooth.
Physarum Braunianum, De Bary.
Sporangia irregularly globose, minute, sessile, scattered or
collected in little clusters, hrown; columella absent; capillitium
well developed, knots of lime small, hroion, angularly globose;
spores violet, smooth, 10— 11 g diameter.
Physarum Braunianum, De Bary, MS.; Rost., Mon., p. 105;
Saoc., Syll., vii., 1 , 1182.
Germany.
About '5 mm. diameter.
Physarum Famintzini, Rost.
Sporangia sessile, minute, crowded, sometimes confluent,
dingy chestnut, irregularly hemispherical, dehiscmg at the apex;
columella absent; eapillitium elastic, becoming elongated after
dehiscence, nodes not usually developed, sometimes containing pale
pinkish granules of lime ; spores pale violet, smooth, 10 g
diameter.
Physarum Famintzini, Rost., Mon., p. 107; Saco., Syll., vii.,
1, n. 1181.
On branches. Poland.
I don’t know tbe present species, which, judging from
Rostafinski’s description, must be a very peculiar and, far from
typical species of Physarum.
id
Physarum capense, Rost.
Sporangia irregularly hemispherical or turbinate, sessile,
simple, or most frequently in crowded clusters springing from
a well developed hypothallus, greyish-white ; columella absent ;
capillitium copious, nodes of lime feto, subglobose with angular
projections, internodes very long; spores pale violet, smooth,
11—14 g diameter.
Physarum Capense, Rost., Mom, p. 113, f. 92 ; Cke., Brit.
Myx., f. 92; Saco., Syll., vii., 1 , n. 1190.
On branches. Cape of Good Hope.
Physarum lutecium, Peck.
Sporangium small, closely gregarious, sessile, yellowish, inclining
to tawny, rupturing irregularly; flooci abundant, yellowish
white; spores globose, purplish-brown, -0004' in diameter
( = about 10— 11 g).
Physarum luteolum, Peck, 30tb Report of N. York State
Mus., p. 50, pi. ii., figs. 15—18; Sacc., Syll, vii., 1, n. 1199.
Living leaves of Gornus Canadensis. Adirondack Mts.,
U. States.