MARYLAND GEOLOGICAL SURVEY 851 



Celastrus arctica Hollick, 1898, Ann. N. Y. Acad. Sci., vol. xi, p. 60, pi. iv, 



fig. 8. 

 Celastrus arctica Hollick, 1904, Bull. N. Y. Bot. Garden, vol. iii, p. 408, pi. 



Ixx, figs. 12, 13. 

 Celastrus arctica Hollick, 1907, Mon. U. S. Geol. Survey, vol. 1, p. 88, pi. 



xxxiii, figs. 9-11. 



Celastrus arctica Berry, 1911, Bull. Torrey Bot. Club, vol. xxxviii, p. 407. 

 Celastrus arctica Berry, 1911, Bull. 3, Geol. Survey of New Jersey, p. 172, 



pi. xxv, figs. 1-5. 



Description. " C. foliis parvulis, lineari-lanceolatis, apice longe 

 attenuates, basi angustatis, denticulatis, nervis secundariis angulo acuto 

 egredientibus." Heer, 1883. 



Leaves elongated and narrow, linear-lanceolate in outline, with an 

 equally acuminate apex and base and a short stout petiole. 1 Length rang- 

 ing from 4 cm. to 13 cm., width ranging from 0.5 cm. to 1.5 cm. Mid- 

 rib stout. Secondaries numerous, parallel, nearly straight, branching 

 from the midrib at acute angles which range from 12 to 37, inosculating 

 near the margin, short branches from this marginal hem entering the 

 teeth. Margin regularly and somewhat remotely dentate with shallow 

 rounded sinuses between the teeth, the cuneate base entire-margined. 



This species, which is exceedingly abundant in the upper Earitan beds 

 at South Amboy, but which has not been found elsewhere in the New 

 Jersey Earitan, was described originally from the Patoot beds of Green- 

 land which are usually correlated with the Senonian of Europe. It is 

 abundant at the top of the Magothy formation in Maryland. The Green- 

 land material was limited and the specimens were small in size compared 

 with the usual Earitan forms. There is, however, no question of their 

 identity. 



Professor Heer (op. cit.) compared this species with Celastrus ettings- 

 liauseni 2 of the European Tertiary which resembles a number of modern 

 species of Celastrus of the East Indian region. 



The present species exhibits considerable resemblance to the leaflets of 

 the palmately compound Dewalqueas of the Upper Cretaceous and Lower 



1 A single specimen from Little Round Bay has a petiole 2 cm. in length. 



2 Heer, Fl. Tert. Helv., Bd. iii, 1859, p. 68, pi. cxxi, figs. 46, 46b (non Vele- 

 novsky, 1882). 



