Maryland Geological Survey 379 



as in the Icwest Potomac of Virginia. It is strikingly like the modem 

 Cephalotaxus in appearance and may also be compared with various fos- 

 sil species of Taxites. 



Occurrence. — Patuxent Formation. Fredericksburg, near Dutch 

 Gap, near Potomac Run, Virginia. 



Collection. — U. S. jSTational Museum. 



Cephalotaxopsis brevifolia Fontaine 

 Plate LX, Fig. 2 



Cephalotaxopsis irevifolia Fontaine, 1890, Mon. U. S. Geol. Survey, vol. xv, 

 1889, p. 238, pi. cv, fig. 3; pi. cvi, fig. 5; pi. evil, fig. 5. 



Cephalotaxopsis microphylla Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 

 1889, p. 238, pi. cviii, fig. 5; pi. cix, fig. 9. 



Cephalotaxopsis irevifolia Berry, 1911, Proc. U. S. Natl. Mus., vol. xl, p. 300. 



Description. — Ultimate branches alternate and rather slender. Leaves 

 distichous in habit, narrowly lanceolate, 7 mm. to 21 mm. in length, 

 averaging 10 mm. to 12 mm. Width 1 mm. to 3 mm., averaging about 

 2 nun. Apex and base almost equally acute, the base slightly less so. 

 Texture coriaceous. Fontaine says of this species: "Midnerve slender.^' 

 It is, on the contrar}-, extremely broad but flat and not prominent. In 

 the specimen figured which is Fontaine's pi. cvi, fig. 5, the midrib occupies 

 one-fifth of the maximum width of the leaf. This specimen exposes the 

 upper surfaces of the leaves in consequence of which the midrib and 

 stomatal bands are obscured. The photograph will also serve to empha- 

 size the idealization and inaccuracy of the former figures of this plant. 



This species, which may simply represent certain terminal or abortive 

 shoots of the preceding, is not at all common and is confined to the 

 Patuxent formation of Virginia. It ]nay be profitably compared with 

 some of the Mesozoic species of Taxites. 



Occurrence. — Patuxent FoRiiATioN. Fredericksburg, near Dutch 

 Gap, near Potomac Eun, Virginia, 



Collection. — D. S. ISTational Museum. 



