. » Exsico.—Karst., Fung. Fenn., 698; Lib., Crypt. Ard., 376;
Fckl., F. Rhen., 1466; Cke., Brit. Fung., Ed. 11., 206; Ellis,
N. Amer. Fung., 1394; Klotzsch, Herb. Myc. (Rab.), 761;
Syd., Myc. March., 257; Rab., F. Eur., 798, 1913, 1070, 2139.
On bark, wood, &c. Britain (Bristol, Hampstead, Castle
Howard, Yorks; Carlisle, Linlithgow); France; Germany;
Finland ; Austria ; United States ; Cuba ; Ceylon.
Readily distinguished by the very much laterally compressed
plasmodiocarp. The outer wall is sometimes almost as porcelain
like as in Ghondrioderma, but is usually rugulose. Tbe
epispore varies, wben seen under a power of 1200 diameters,
from almost smooth to being distinctly warted, and in some
instances the warts become bar-like and more or less combined
to form a very delicate and broken network.
(Rostafinski’s Synonyms.)
Eeticularia sinuosa. Bull, t. 446, f. 3 (1791) ; Sow., t. 6.
Physarum bivalve, Pers., Obs., t. 1 , f. 2 (1796).
Trichia sphaerica, ¡3. polymmpha, Trent., p. 230 (1797).
Angioridium sinuosum, Grev., S. C. FL, t. 310 (1828) ; Eng.
FL, V., 315; Cooke, Hdbk., n . 1142, fig. 128.
Diderma valvatum, Fr., S. M., iii., 109 (1829).
Didymium sinuosum, DR. and M., FL Alg., p. 411 (1846).
Careerina valvata, Fr., S. V. S., p. 451 (1849).
Leoearpus melaleueics. Gay, in Mont. Syll., 1072 (1855).
Diderma contorhmi, Fckl, Sym. Mrc., 341 (1869).
Diderma pallidum-, B. and C., in Grevillea, iii., 59 (1873).
Physarum cerebrinum, Mass. (n. sp.) (fig. 275).
Aethalium naked, broadly effused, or in small scattered
patches, consisting of very much contorted and anastomosing folds,
greyish-lilac, sprinkled witb minute particles of lime ; capillitium
consisting of numerous, irregularly anastomosing threads about
3 g tbick, with here and there usually interstitial, large, elongated
stoellings file d with large, amorphous, yellow granules of
lime; spores globose, dull violet, very minutely verruculose,
9— 11 g diameter.
On wood and soil in a pot of palm-seeds from Java. Palm
House, Kew.
Contorted and forming a brain-like mass from '5—4 cm.
across, very friable. The present species connects the genera
Physarum and Fuligo, if indeed the letter be anything more
than an aethalioid condition of the former.
Physarum gyrosum, Rost.
Sporangia vermiform, sinuous, or variously anastomosing to
fm-m an irregular netwoi'k, often forming more or less regular
closed circles, wall double, outer very thin and delicate, inner
thicker, rigid witb granules of lime, varying from rusty-orange,
through dull ochre to pale yellow, dehiscing in au irregular
manner, capillitium fairly abundant, nodes large, angular, containing
yellow or white granules of bme, internodes th in ; spores
dingy violet, 1 1— 12 g diameter, minutely warted, globose.
Physarum gyrosimi, Rost., Mon., p. 111.
Physarum muscorum, Saoc., Syll, vii., 1, 1197.
Exsicc.—Ellis, N. Amer. Fung., 1396.
On leaves, mosses, &c. Britain (Carlisle); Germany; Sweden;
France; Portugal; United States.
Variable in size, tbe large reticulations often extending up
to 1 cm. diameter. Superficially closely resembling Ceinkoioskia
reticulata.
(Rostafinski’s Synonyms.)
Fuligo muscoi'um, A. and Sz., I.e., p. 86, t. 7, f. 1 (1805).
Lignidiiem griseo-flavum. Link, Obs., i., p. 24, t. 2, f. 37;
Nees, Syst., f. 95 (1809).
Lignidium muscicola, Fr., Sym. Gast., p. 10 (1817).
Lignidium renifonne, Fr., Sym. Gast, f. 10 (1817).
Beticularia muscorum, Fr., I.e., iii., p. 91 (1829).
Physarum sinuosum, Wein., in Fr., I.e., iii., p. 145; Excl.
siuoin. Non. Auo. (1829).