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I'lG. 260. Craterimn cmreitm, Rost., plant, x 40.
„ 261. Portion of capillitium and spores of same, x 350.
,, 262. Arcyria riihifomnis, Rost., a, tlie stipitate, fasciculate form ; h,
sessile form; in c, the sporangium has deliisced in a circumscissile
manner, the apical portion, cl, being carried up hy the
elastic capillitium, e, x 40,
,, 263. Portion of capiUitium and spores of same, x 350.
„ 264. Spore of same, x 1200.
,, 265. Graterium Friesii, Rost., x 40,
PLATE 11.
Fig. 266. Oeiuhoivskicc I'cticulata, R o st, specmien, x 40.
„ 267. Spores and portion of capillitmm of sfime, showing the free,
curved, pointed tips, a, a, x 400.
„ 268. Arcyria chmysospoi'a, Mass., spore, x 1200.
„ 269. Free apex of thread of capillitium, x 1200.
„ 270. Arcyria Bncknalli, Mass., tip of elater, x 1200.
,, 271. Spore of same, x 1200.
„ 272. Arcyria paradoxa, Mass., portion of an elater, x 1200.
„ 273, Arcxjria serpula, specimen, x 40.
„ 274. Tip of elater of same, x 1200.
„ 274a. Spore of same, x 1200.
„ 275. Physa7'um cerehdonim, Mass., specimen, x 40.
„ 276. Fhysai'-nm coutextum, specimen, x 40.
„ 277. Spores and portion of capillitium of same, x 350.
278. Spore of same, x 1200.
„ 279. Physcmi/m vii'csceus, sessile form, x 40.
„ 280. Stipitate form of same, x 40.
„ 281. Aethalioid form of same, x 2 .
„ 282. Portion of capillitium and spores of same, x 350.
„ 283. Spore of same, x 1200.
„ 284. Ph7jsaru7n co7iglomerc(,tum, Fries, group of sporangia, x 40.
„ 285. Spores and portion of capillitium of same, x 350.
,, 286. Spore of same, x 1200.
„ 287. Physarum- Sclmmacheri, plants in different stages of development,
tlie one to the left with the sporangium broken away and
showing the columella, x 40.
„ 288. Spore of same, x 1200.
„ 289. Ci'aterium confusum, MaSs., group of sporangia, x 40.
PLATE 12.
Fig. 290. Physarum psittacioium, plant, x 40.
„ 291. Spores and portion of capillitium of same, x 350.
F ig . 292.
. 293.
294.
295.
296.
297.
298.
300.
301.
302.
303.
304.
305.
306.
307.
.308.
309.
310.
311.
312.
313.
Physarum simiosum, entire plants after dehiscence, x 40.
Section of same, x 50.
Badhamia macrocarpa, sessile scattered form, x 50.
Stipitate form of same, x 50.
Spores and portion of capillitium attached to sporangial wall of
same, x 350.
Spore of same, x 1200.
Graterium leucocephalum, specimens showing the various stages
of dehiscence, x 50.
Vertical medium section of same showing the irregular columella,
dense capillitium, and perforations in the wall, a, x 100.
Portion of wall of sporangium of same, seen from the inside,
showing the general crust of lime in the form of very minute
granules, the circular discs of organic matter, a, and the
cavities from^ wliich the discs have been removed, b, x 400,
One of the discs of organic matter removed from wall of same,
X 400.
F7ierthenc7na elegans, specimen from which the wall of the sporangium
has been removed and the spores blown away, showing
the thin columella with its apical disc-like portion from which
the capillitium originates, a fragment of the basal portion of
sporangial wall still adhering to the stem is marked, a, x 50.
Portion of capillitium and spores of same, x 350.
Spore and portion of capillitium of same, x 1200.
Graterium dictyospei-mum, x 50.
Median vertical section of same, showing the columella and
capillitium, X 100.
Graterium lilacimim, x 50.
Spore of same x 1200.
Gi'aterium rubigmosimi, x 50.
Spore of same, x 1200.
Beticularia lycoperdon, a. castaucum; nat. size.
Spore of same, x 1200.
GhondriodciAua Michelii, a, hypothallus, x 50.