34 FLORA OF SOUTHEEN NEW YOEK AND NEW ENGLAND. 



is Cydopteris tenue-striata Heer'' from the Cretaceous of Portugal, which may be more 

 or less satisfactorily, compared with our fig. 15. This species was subsequently 

 referred by the same author to the genus Ginkgo and was included, with somewhat 

 similar remains from the Cretaceous of Greenland, under the name G. tenuestriata 

 Heer,'' but their relationship is not very apparent, and while our species might be 

 regarded as generically related to the former, it could hardly be so considered in con- 

 nection with the latter. In any event the genus Marsilea would seem to be the one 

 which possesses external leaf characters most nearh^ like those of the-'fossils. 



Another organism to which attention may be called on account of its general super- 

 ficial resemblance to those just mentioned is Sphenoglossmn quadrifolium Emmons," 

 from the Triassic of North Carolina, a plant of uncertain botanical relationsliip which 

 Fontaine subsequently suggested renaming Actinopteris quadrifoliataf- regarding it 

 as probablya fernand comparing iUviih. A. peltata (Gopp.) Schenk.« Ward also refers 

 to this species under the heading "Plants of doubtful affinity" in his first paper on the 

 "Status of the Mesozoic Floras of the United States,"-'^ and the figure which accom- 

 panies his discussion is decidedly suggestive. It is unfortunate, however, that in no 

 instance is the nervation any more clearly defined, either in the description or in the 

 figure, than it is in ours. 



Locality: Manhassett Neck, Long Island, PI. I, figs. 14-16. Collected by A. E. 

 Anderson, for whom the species is named. Specimens in Mus. New York Bot. Gard. 



Gay Head, Marthas Vineyard, PL I, figs. 17, 18. Collected by David White. 

 Specimens in^U. S. Nat. Mus. 



Sagenopteris variabilis (Velenovsky) Venenovsky? 

 PI. I, fig. 22. 



Sagenopteris variabilis (Vel.) Vel., Abh. K. Bohm. Gesellsch. WisseBsch., vol. 3 (Kvet. Cesk. Cenomanu), 1SS9, 



p. 40. 

 TUnnfeldia variabilis Vel., Gymnosp. Bohm. Kreideforra.,'lS85, p. 6, pi. 2, figs. 1-5; pi. 3, fig. 12; Holliek, 



Bull. New York Bot. Gard., vol. 2, 1902, p. 403, pi. 41, fig. 12. 

 Not T. variabilis Fontaine, Mon. U. S. Geol. Survey, vol. 15 (Potomac or younger Mesozoic Fl.), 1889, p. 110, 



pi. 17, figs. 3-7; pi. 18, figs. 1-6. 



It is possible that this specimen should be referred to Marsilea Andersoni Holliok, 

 the species last described, but as the nervation characters of the latter are not well 

 defined, I have thought it advisable, pending the possible discovery of better 

 preserved specimens, to regard them merely as closely related. 



Locality: Chappaquiddick, Marthas Vineyard. Collected by Arthur Holliek. 

 Specimen in Mus. New York Bot. Gard. 



o Cont. Fl. Foss. Portugal, 1881, p. 45, pi. 19, fig. 5. 



!> Fl. Foss. Arct., vol. 6 (abth. 2), 1882, p. 14, pi. 2, fig. 12a. 



cGeol. Eept. Midland Counties North Carolina, 1856. p. 335, pi. 1, flg. 2. 



dM-on. V. S. Geol. Survey, vol. 6 (Cont. Older Mesozoic Fl. Virginia), 1883, p. 121, pi. 52, flg. 3. 



e Foss. Fl. Grenzseli. Keupers u. Lias Frankens, 1867, p. 23, pi. 6, figs. 3-5. 



/Twentieth Ann. Eept. U. S. Geol. Survey, 1898-99, pt. 2, 1900, p. 310, pi. 47, flg. 2. 



