LINDMAN, AMERICAN SPECIES OF TRICHOMANES SM. 19 



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Fig. 7. Trichomanes quercifolium Hook, et Grev. A specimen from 

 Caldas in Minas Geraes. Brazil. Regncll n. III, 1490 (natural size): B cellu- 

 lar structure of the margin of a frond and C cells from the middle of the 

 same frond (X 350): D fronds of various shape from San Bernardino in Pa- 

 raguay, Exped. 1. Regnell. n. Ä, 2207 (natural size): E cells from a trend 

 of the same (X 350) and F cellular structure of different fronds (X 110). 



