LYCOPODIACE^B. 



frond between its apex and that of the cuticle, this i3 

 called a calyptra. The developement of the sporules in 

 the capsule is gradatim, at the apex it is perfect, at the 

 base it is rudimentary. Male organs much developed 

 and evideutly dehiscing. 



Habit of Marchantiaceae. Frondose, estomatose. 



Ferns. — No Pistilla. Rudimentary male organs. No 

 trace of fecundation, which if any, is mediate. Capsule 

 in the more perfect, with an annulus. 



Distinct axis, often arboreous. Habit. Peculiar ver- 

 nation gyrate. Reproductive organs on the dorsum or 

 under surface of the leaves. Scales (Ramenta) much 

 developed, perhaps the true leaves. 



Isoetes. — Male organ non-analogous, no traces of fe- 

 cundation, the reproductive organs by separation and 

 enlargement of parts of the inner tissue of the young fe- 

 male, subsequently by division from the enlarged parts 

 or cells, Sporula in earlier stages non uniform, in adult 

 uniform. 



Herbaceous, Rhizomatus, Cyperaceous— Immersed or 

 partly stomatose. 



Psilolum. — No male organs, no pistillum, sporules de- 

 veloped by a two-fold system of the ordinary division, 

 sub non-uniform at first, afterwards uniform. 



Lycopodineous. — Frutescent, dichotomous, axis sto- 

 matose, leaves estomatose, rudimentary. A distinct 

 representation of a Phaenogamous loculicidal trilocular 

 capsule, (stylo lapso.) 



After repeated examinations, I am unable to reconcile 

 the appearances in a satisfactory manner. 



Though these are uniform at first, consisting of the 

 separation of the inner tissue of each cell, into com- 

 pound cells, each with its nucleus, and again the sepa- 

 ration of these, yet nothing can be clearer than that 

 the cells in which the sporula are produced are subse- 



