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l!:
b M : glcbo», l O - l S , epispore MackM,
Violet, smooth.
Protoderma pusilla, Eost., Mon,, p. 90.
Protodermium pusillum, Saco., Syll., Vol. vii., pt. I, n. 1139.
On rotten wood. Germany; Russia; United States.
(Rostafinski’s Synonyms.)
Licea pusilla, Schrad., Nov. Gen., p. 19, t. vi., f. 4 (1797).
Physarum licea, Fr., S. M., iii., p. 143 (1829)
Sub-sect. Cbibeaeiae.
E nteeidium, Rost, (emended).
Aeyahum covered with a general, irregularly perforated
membranaceous cortex; walls of component sporangia with
symmetrical perforations, or irregularly broken up to form a
capillitium-like structure,
Rost., Mon., p. 226; Cooke, Myx.' Brit., p. .56; Schroeter,
p. 103; Sacc., Syll., Vol. vii., pt. I , p. 409.
Very ^ closely allied to the Glathroptyehimm, which differs
chieny m the more complete cabsorption of the walls of the
sporangia.
In P. olivaceum, which most nearly approaches CJathropty-
chium m structure, the side walls of the sporangia are not so
completely absorbed as in the last-named genus, hence the
thickened angles formed by the walls of contiguous cells have
Droader and more irregular wings.
Distrib. Europe; United States; W. Australia: species 3.
A . Spores Reticulated.
Pnteridium olivaceum, Eost. (f. 14 18).
Aethalium very variable in form, flattened or pulvinate, olirve;
general cortex papery, pellucid; walls of the crowded sporangia
pellucid, yellowish-brown, perforated; mass of spores olive-
spores in clusters of from 5 - 2 0 , single spores truncate, the free
portion convex and warted, remaining portion smooth, 11—15 g
diameter.
Rost., Mon., p. 227, fig. 5; Cooke, Myx. Brit., p. 56, fig. 5;
Schroeter, p. 103; Saco., Syll., n. 1399.
Beticularia applanata, B. and Br,, Ann. Nat. Hist. (1886),
t. ii,, f. 3.
(Specimen in Herb. Berk., named by Rostafinski.)
On wood. Britain (Kew, Scarborough, Appin, N. B.);
Germany; Denmark; France; United States; W. Australia.
Irregularly effused for 1—2 inches, or sometimes in the
cracks of wood and then elongated; colour dark greenish olive,
the minute sporangia showing through the thin general cortex,
and giving the surface a slightly papillose appearance. The
side walls of the sporangia are more or less regularly perforated,
the angles where adjacent sporangia meet being permanent
and winged with the side portions of the walls that are not
absorbed.
(Rostafinski’s Synonyms.)
Lycoperdon undulinum, Schum. Saell., 1404 (1803).
Pnteridium olivaceum, Ehr., f. 1, 5 A.E, (1818).
Beticularia versieoloi', Fr., Obs., ii., 147 (1818).
Lieogala olivácea, Link, Hb.
Beticularia olivácea, Fr., Syst. Myc., iii., 89 (1829).
Beticularia ungulina, Fr., in FL Dan., t. 1977, f. 2 (1823).
PnteridÁumi atrum, Preuss., Linnaea, 142 (1851).
Beticularia applanata, B. and Br., Ann. Nat. Hist. (1866),
t. il. f 3; Cke. Hdbk., No. 1098.
lAcea olivácea, Fckl. Symb., 338 (1869).
Licea glomulifera, De Bary and Rost., in Alex. (1872).
Lieaethaliuni olivaceum, Rost. Vers., p. 4 (1873).
Lindbladia versicolor, Rost., in Fckl, 68 (1873).
Enteridium Eostrupii, Raunk.
Aethalia irregular, lengthened, the greatest length is 4 cm.,
consisting but of one stratum of sporangia, which is 1 mm.
thick. Wall of sporangium olive; the lateral wall towards
ripening of the spores perforated by large, oval openings. Mass
of spores olive; the single spore rather colourless. Spores in
,1
A