238 THE POTOMAC OE TOUNGEK MESOZOIO FLORA. 



Fig. 2. The branches are now by pressure brought into one plane. In 

 PI. CVIII, Fig. 2, tlie right-hand lateral branch has been torn off. In PI. 

 CVI, Fig. 2, they appear to have been pinnately arranged, a mode not so 

 common as the umbellate one. In PI. CIV, Fig. 2, all the fragments seem 

 originally to have belonged to the same branch. 



Cephalotaxopsis brevifolia, sp. nov. 



Plate CV, Fig. 3 ; Plate CVI, Fig. 5 ; Plate CVII, Fig. 5. 



Trees or shrubs, with ultimate branches, so far as seen, alternate and 

 strictly in one plane ; leaves thick and leathery, attached and arranged as 

 in the preceding- species, narrowly oblong to narrowly elliptical, mostly 

 narrowed gradually at the base and apex, maximum dimensions 21""" by' 

 3°"", average dimensions IS™"" by 2°"", short in proportion to the width; 

 midnerve slender. 



Localities : Fishing hut above Dutch Gap Canal ; Fredericksburg ; 

 road-side near Potomac Run ; rare. 



PI. CV, Fig. 3, a specimen from Fredericksburg, gives the largest leaves 

 seen. Only small fragments of ultimate branches were found. The leaves 

 in proportion to their size are remarkably thick and leatheiy. 



Cephalotaxopsis microphylla, sp. nov. 



Plate CVIII, Fig. 5 ; Plate CIX, Fig. 9. 



Tree or shrub, copiously branching, with branches alternate, slender, 

 all in one plane ; leaves arranged and attached as in the preceding species, 

 very small, average dimensions 1"° by 7"", leaf-substance thin, in shape 

 narrowly oblong to narrowly elliptical, tapering gradually to the base and 

 apex; midnerve slender. 



Localities: Fredericksburg; fishing hut above Dutch Gap Canal. 



This plant is quite rare, and is the smallest of the genus. The leaves 

 on the ultimate twigs towards the summit of the branches are very minute, 

 as on the vippermost branch on the left hand in PI. CIX, Fig. 9, from the 

 Dutch Gap locality. The midnerve, owing to its slenderness, is generally 

 not visible. 



