DKSCKH'TION OF THE SPECIES. 207 



The nature ot" tlie iii)[)arent fructification is obscure from the poor 



[)reservatiou of the specimens, and from tlie fact that tlie precise connection 



of the seed-like bodies with the leaves is not seen. The seeds are about 



2""" in diameter, are sessile or attached by very short pedicels to slender 



naked stems, being opposite or subopposite, and on both sides of them. 



The stems with their seeds seem to represent metamorphosed leafy 



l))-aiiches or leaves, taking the place of the ordinary leaves, which appear 



higher. The general character of these seeds and their aj)parent mode of 



attachment remind one of the supposed seed of Baicra Mmstcriana from 



the Rhaetic of Baireuth, which represent metamorphosed leaves of that 



plant. 



Baieropsis expansa, sp. nov. 



Plate LXXXIX, Fijjs. 1. :! : VUU- XC, Fig 1. ; Pliito XCI, Pig. 2 ; Plate .XCII, Fig. .''.. 



Leaves very large, having probably the width of l:^'"', and the length 

 of over 15""', attached by slender pedicels, and apparently distributed as 

 given in the generic description — i. e., pinnately on leafy twigs, which 

 themselves are arranged pinnately on a principal stem, the main stem and 

 branches ending in leaves of the normal kind ; leaves divided to near 

 their bases into several principal lacini;e, which in turn are subdivided at 

 varying heights into sul>onlinate lamina?, and these m\o ultimate ones that 

 are long and narrow, ribbon-like, with the ends not seen ; all subdivide 

 (lichotomouslv and diverge so as to give the leaf a fan shape; the idtimate 

 lacinia^ 1.5'"'" wide and under; the nerves distinct, although .slender. Thev 

 fork at the base in the primary laciniae, and then repeatedly subdivide dicli- 

 otomously in the laciniji' at varying intervals, the branches being more or 

 less parallel. 



Localities: Fredericksburg; red clay ball in the banks of Dutcli Gap 

 Canal ; ii.shing hut above the canal; entrance to Trent's Reach. 



In some specimens the apparent simple strong nerves under a good 

 lens seem to run in pairs, the members of which are so closely placed that 

 they seem to the unaided eye to be simple nerves. This fine plant is not 

 very rare at P^redericksburg in pretty good specimens. At the other local- 

 ities the great size of the leaves caused them to be preserved in a very 

 fragmentary state. 



