208 THE POTOMAC OR YOUNGBK MESOZOIC FLORA. 



There is a strong resemblance between the fragments of some of these 

 leaves and Baiera cretosa^ Schenk, but Schenk's figure indicates a larger 

 and coarser leaf 



Baieropsis pluripartita, sp. nov. 



Plate LXXXIX, Fig. 4 ; Plate XC, Figs. 2-5 ; Plate XCI, Figs. 1, 3, 4, 7 ; Plate XCII, Figs. 1, 2, 6. 



Leafy branches with the character of the genus ; stems slender, leaves 

 broadly fan-shaped, opposite or subopposite, attached by short pedicels, 

 usually divided down to near the base into three principal segments; these 

 by repeated dichotomous subdivision give rise finally to long, slender, ulti- 

 mate segments, that are strap-shaped and about 1°" wide, their length not 

 being made out, as their tips were not in any case seen, but in the largest 

 leaves probably attaining the length of 4°"" and more from the last point of 

 subdivision; the nerves slender but distinct, forking at the base to enter the 

 principal lacinia?, and then forking repeatedly and dichotomously at long 

 intervals, with the branches nearly parallel, one or two being found in the 

 ultimate lacinise. The apparent fructification (see PI. XC, Fig. 4^ is as given 

 in the generic descrij^tion. 



Localities: Entrance of Trent's Reach; banks of Dutch Gap Canal; 

 red clay ball; fishing hut above the canal. 



The plant is not uncommon at the first and last named localities. It is 

 usually associated in its occurrence with Dioonites Buchianua. There is a 

 considerable variation in the size of the leaves and in the number of their 

 segmenis, apparently depending on the position of the leaves on the leafy 

 twigs, those towards the summits being smaller and with fewer segments. 

 The largest and most perfectly preserved forms were found at the entrance 

 to Trent's Reach. The leaves were usually found in a very fragmentary 

 state, and in no case were their tips seen. 



Baieropsis pluripartita, var. minor, sp. nov. 



Plate XCI, Fig. 5 ; Plate XCII, FigB. 3, 4. 



Twigs and leaves as in B. pluripartita, but much smaller and constantly 

 so, without gradations into the larger form ; the ultimate lacinise very nu- 



' Die Fobs. Ptianz. der Wernsdorf. Schichteu, P). I, Fig. 7. 



