i6o 



Cincinnati Society of Natural History. 



TABLE IL 



SPORANGIA SIMPLE AND STIPITATE OR SESSILE. 



a. Sporangia containing lime, (b.) 

 Sporangia containing no lime (g.) 



b. Capillitium inclosing granules of lime, (c.) 

 Capillitium containing no lime, (f.) 



c. Granules of lime aggregated into nodules, (d.) 

 Granules of lime lining or filling the tubules. 38, 39. 



d. Surface of the sporangium invested with granules of 



lime, (e.) 



Surface of the sporangium destitute of lime. 30, 31, 32. 



e. Stipe prolonged within the sporangium as a columella. 



33. 34- 



Stipe never entering the sporangium. 35, 36. 



f. Lime on the wall of the sporangium in the form of 



minute stellate crystals. 26. 

 Lime on the wall of the sporangium consisting of 

 minute roundish granules. 28, 29. 



g. Stipe prolonged within the sporangium as a columella. 



(h.) 



Stipe never entering the sporangium. (1.) 



h. Stipe and columella, brown or black, (i J 

 Stipe aud columella, white or yellowish. 25. 



i. The columella scarcety reaching the center of the spor- 



angium. 20, 21. 

 The columella extending beyond the center of the 

 sporangium, (k.) 

 k. Threads of the capillitium radiating from numerous 

 points of the columella. 22, 23. 

 Threads of the capillitium pendant from a discoid mem- 

 brane at the apex of the columella. 24. 

 1. Capillitium traversing the interior of the sporangium 

 and intermingled with the spores, (m.) 

 Capillitium rudimentary or connate with the wall of 

 the sporangium, (r.) 

 m. Tubules of the capillitium furnished with spiral 

 ridges, (n.) 



Tubules of the capillitium not marked with spiral 



ridges, (o.) 



14 



