EXPLANATION OF THE PLATES 



[From drawings by the author.] 



Plate V 



Fig. 1. Trichomanes minutissimum v. A. v. R. 



a', rhizome with variously shaped fronds, natural size, 

 a", rhizome with fronds showing the veins and sori, enlarged about 

 10 times. 

 2. Trichomanes pervenulosum v. A. v. R. 



b', rhizome with variously shaped fronds, natural size. 

 b", b'", portions of a sterile and a fertile segment showing the 

 spurious veinlets and a sorus, enlarged about 8 times. 



Plate VI 



Drymoglo&sum fallax v. A. v. R. 



o, rhizome with fronds, natural size. 



b', b", rhizome scales, enlarged about 50 times. 



c, portion of a sterile frond showing the venation, enlarged about 



5 times. 

 d', portion of a fertile frond, lower surface, showing the sori and 



paraphyses, enlarged 10 to 15 times. 

 d", transverse section of a fertile frond showing the capsules and 



paraphyses, enlarged 10 to 15 times. 

 e, stellate hairs flanking the sori, enlarged about 40 times. 

 /, paraphyses separating the capsules, enlarged about 40 times. 



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