

IQI71 



SPESSARD—PROTHALLIA OF LYCOPODIUM 



73 



cm. above the ground, and another had just emerged 



mm 



In color it resembled closely the gametophyte of 

 Botrychium virginianum. The specimens of L. clavatum were 



much smaller and almost white 

 6.5X5 mm. to 5X3 mm. Th 

 mm., and the smallest 2X1 mm 



from 



jment measured 

 and 8 show the < 



specimens 



fragments were more twisted and wrinkled than 



Figs. 16, 17. — Fig. 16, antheridium of L. clavatum in sperm mother cell stage, 

 X365; fig. 17, archegonium of L. cotnplanatum immediately before neck canal cells 

 break down, the lowest neck canal cell being double, X365. 



these, but both the fragments and the entire specimens showed a 

 distinct crown on the border, which in one case (fig. 7) was double, 

 the inner crown having an irregular outline. Each of the entire 

 prothallia showed the primary tubercle very distinctly, near the 

 middle, on the ventral side. 



The prothallia of L. cotnplanatum were all entire except one 

 which had the lower portion broken off. Seven of these prothallia, 



