aaa i cd ee Sen g E a  Sa 
SE OR Seen eee Wits 
BRIEFER: ARTICLES 
THE EPIDERMAL CHARACTERS OF FRENELOPSIS 
RAMOSISSIMA 
(WITH TWO FIGURES) 
The genus Frenelopsis was founded by SCHENCK in 1869 upon 
abundant material from the Wernsdorferschichten (Lower Cretaceous), 
and named from its resemblance to the modern genus Frenela. Thuites 
_ Hoheneggeri of ErtiNcSHAUSEN was the type and only species. This was, 
he says, the most abundant fossil in those beds in which it occurs, and 
it received a careful and elaborate treatment at his hands. This species 
has subsequently been recognized in the Kome beds of Greenland, the 
Trinity beds of the Texas region, the Raritan and Magothy formations 
of New Jersey, and the Turonian of Bagnols, France. In 1880 Hosrus 
and VAN DER Marcx described a rather illy defined species, Frenelopsis 
Kénigii, from the Senonian of Westphalia,? and the next year HEER? 
described an additional species, F. occidentalis, from Portugal, which 
Saporta has shown4 ranges from the Urgonian of Cercal, through the 
Albian of Nazareth, into the Cenomanian of Alcantara and Padrao. 
_ The latter author also describes an additional species, F. leptoclada,’ 
Which is confined to the Lower Cretaceous of Portugal (Neocomian- 
Aptian). 
In 1889 VELENovsky described the Bohemian form F. bohemica from 
the Cenomanian of that country (op. cit.), and the next year FONTAINE 
described the two species F. ramosissima and F. parceramosa from the 
Potomac group of Virginia, the same author three years later founding 
a third species, F. varians, upon material from the Trinity group of 
Texas. NEWBERRY in 1896 described a ninth species, P. gracilis,° 
* Palaeontographica 19:1 3. 1869. 
* Ibid. 26:132, 181. pl. 37, jig. 148. 1880. 
3 Cont. Foss. Fl. Port, 1881: 21. pl. 12, figs. 3b, 4-7. 
* Fl. Foss. Port. 1894: 139, 199, 214. pl. 26, fig. 16; pl. 36, figs. 1, 2; pl. 38, figs. 
2,35 pl. 30, fig. 20. 
‘ Ibid. 109, 113. pl. 19, fig. 18; pl. 21, figs. 9-11. 
° Fl. Amboy Clays 1896:59. pl. 12, figs. 1-34. 
305] [Botanical Gazette, vol. 50 
