178 



THE LOWER FUNGI— PHYCOMYCETES 



Fig. 67. — Araiospora pulchra Thaxter. (o) Plant bearing only oogonia and 

 antheridia. (b) Segment bearing three sporangia, two of them spinose, the 

 other smooth, (c) Two oogonia, one shown in optical section, the other in 

 surface view, (d) Oogonium showing envelope of peripheral cells in process 

 of formation. (After Thaxter 1896.) 



