trichia] 



TRICHIACEAE 



205 



Capillitium scanty, consisting of free elaters with imperfect 

 spiral thickenings ; sporangia minute, closely compacted 

 or heaped. (39) Oligonema. 



Fig. 47. — Oligonema nitens Host. 



a. Cluster of sporangia. Magnified 3 times. 



b. Elater. Magnified 280 times. 



c. Spore. Magnified 400 times. 



Fig. 47. 



Similar to Oligonema, but the capillitium branching and anas- 

 tomosing to form a network. (40) Calonema. 



Capillitium combined into a network, with spiral thickenings. 



(41) Hemitrichia. 



Fig. -IS.— Hemitrichia Vesparium Macbr. 



a. Cluster of sporangia. Magnified 2i times. 



b. Capillitium. Magnified 280 times. 



c. Spore. Magnified 400 times. 



Fig. 48. 



Capillitium combined into a network, with thickenings in the 

 form of rings. (42) Cornuvia. 



Fig. 49. — Cornuvia Serpula Rost. 



a. Plasmodiocarp. Magnified 7 times. 



b. Capillitium. Magnified 250 times. 



c. Spore. Magnified 400 times. 



Fig. 49. 



Genus 38.— TRICHIA Haller Hist, Stirp. Helv., iii. 114 

 (1768). Sporangia stalked or sessile ; sporangium- wall 

 membranous or cartilaginous ; elaters free, pointed at each 

 end, thickened with two to five spiral bands ; spores reti- 

 culated or warted, in the former case the reticulation may be 

 continuous or broken, and forms when seen in profile a 

 " border " to the spore. 



