236 THE POTOiMAC OR YOUNGER MESOZOIC FLORA. 



identical with it. It rather seems to be a composite type, uniting some of 

 the features of Ceplialotaxus, Torreya, and perhaps Taxus. A common mode 

 of growth of the branches seems to have been by a terminal bud with oppo- 

 site buds, one being on each side of the terminal one, all being covered with 

 scales, which, as in Ceplialotaxus, leave sometimes distinct scars at the base of 

 the shoots of annual growth. 



No fruit has been found attached to the leafy twigs of these plants, 

 hence its nature has not with certainty been determined, but certain nut- 

 like fruits have been found in company with the leaves which most prob- 

 ably belong to this genus. 



Cephalotaxopsis magnifolia, sp. nov. 



Plate CIV, Figs. 4, 5 ; Plate CV, Figs. 1, 2, 4 ; Plate CVI, Figs. 1, 3 ; Plate CVII, Figs. 1, 2, 4 ; Plate 



CVIII, Figs. 1, 3, 4. 



A tree or large shrub, witli stout limbs, so far as seen, branching spar- 

 ingly, the branches being in the same plane and remote, opposite or alter- 

 nate, the ultimate twigs showing sometimes at their bases scars of the bud- 

 scales ; leaves variable in size, attaining a maximum length of 6"" and a- 

 maximum width of 5°"" ; subspirally arranged, that is, attached mostly to 

 the sides of the twigs, but sometimes somewhat within the margins and 

 slightly on tlie upper and lower surfaces ; attached by short slightly twisted 

 footstalks in two rows in the same plane, subopposite or alternate, rather 

 remote, with the ultimate twigs terminated abruptly by a leaf; the leaves 

 very thick and leathery, persistent, and very durable, widest near the base 

 and generally abruptly rounded ofiP there, more rarely tapering gi'adually 

 to the base, gradually narrowing towards the apex, where they terminate 

 in a spinous or mucronate point ; the leaves (see PI. C V, Fig. 1 ) below 

 and near the shoots of annual growth sometimes unusually small ; midrib 

 broad, flat, distinct, with a narrow sunken line on each side. 



Localities: Fishing hut above Dutch Gap Canal, rare; Fredericks- 

 burg, very cpmmon. 



This is one of the most abundant plants at Fredericksburg, where 

 many well-preserved specimens occurred. The growth of the twigs seems 

 often to have been made by a terminal bud flanked by two opposite lat- 



