BOTRYOPTERIS 331 



In one case M. Renault described a young frond 

 in beautiful preservation, which was still circinately 

 coiled, and bore numerous equisetiform hairs on its 

 outer surface. 



The fructifications of Botryopteris forensis bear a 

 general resemblance to those of Zygopteris, but differ 



■^SyS 



Fig. 124. — Botryopteris. Group of sporangia attached laterally to an axis, probably 

 part of rachis. The sporangia show the mtiltiseriate annulus ; they have already 

 dehisced. Associated with B. ramosa. Cf. Fig. 123. y, 66. S. Coll. 776. R. S. 



in detail. The sporangia occur associated in large 

 masses, and crowded together, representing, no doubt, 

 the collective output of a compound fertile frond. The 

 pyriform sporangia are shortly stalked and grouped 

 in tufts, on the branches of the fertile rachis (see Fig. 

 123). The latter shows in section the characteristic 

 &)-shaped vascular bundle of the species, thus placing 

 the identification beyond doubt. 



