1904] GARBER: RICCIOCARPUS NATANS 177 
Fic. 33. Sporophyte with amphithecium almost complete. 
F1G. 34. Sporophyte with amphithecium clearly differentiated. 
F1G. 35. Sporophyte cell division; spindle has very prominent asters with 
eight chromosomes attached to each. 
F iG. 36. Spore mother-cells free and rounding off. 
FIG, 37. Spore mother-cells surrounded by nutritive material. 
Fic. 38. Spore mother-cells forming tetrads surrounded by framework 
remaining from nutritive substance shown in fig. }7. 
FIG. 39. Young sporophyte in an archegonium having a “foot” derived 
from basal cell imbedded in nutritive tissue of gametophyte. 
Fic. 40. Diagram. Fungal hyphae and spores surrounding broken-down 
spores of Rictiocarpirk 
