Desci'iptio?i of the Figures. 355 



Fig. 292. Physamm sinvmum, entire plants after dehiscence, x 40. 



„ 293. Section of same, x 50. 



,, 294. Badhann'ia macrocarpa, sessile scattered form, x 50. 



„ 295. Stipitate form of same, x 50. 



„ 296. Spores and portion of capillitiuni attached to sporangial wall of 

 same, x 350. 



„ 297. Spore of same, x 1200. 



„ 298. Craterium leucocephalum, specimens showing the varioaxs stages 

 of dehiscence, x 50. 



„ 299. Vertical medium section of same showing the irregular columella, 

 dense capillitium, and perforations in the wall, a, x 100. 



„ 300. 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 which the discs have been removed, b, x 400. 



„ 301 . One of the discs of organic matter removed from wall of same, 

 X 400. 



„ 302. Enerthenema elegans, specimen from which the wall of the spor- 

 angium 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. 



„ 303. Portion of capillitium and spores of same, x 350. 



„ 304. Spore and portion of capillitium of same, x 1200. 



„ 305. Craterium dictijospermnm, x 50. 



„ 306. Median vertical section of same, showing the columella and 

 capillitium, x 100. 



„ 307. Crateri>mi Ulaciiwm, x 50. 



„ .308. Spore of same x 1200. 



„ 309. Oraterinm rnhiginosiim, x 50. 



„ 310. Spore of same, x 1200. 



,, 311. Retimlaria lycoperdon, a. castaiieu.ni ; nat. size. 



„ 312. Spore of same, x 1200. 



„ 313. Clwndriodcrma Michelii, a, hypothallus, x 50. 



