36 THE FLORA OF THE AMBOY CLAYS. 
PTERIDOPHYTA. 
Order FILICIN/A, 
GLEICHENIA GIESEKIANA Heer?. 
Pl. IV, fig. 12. 
Gleichenia Giesekiana Heer, Fl. Foss. Arct., Vol. I, p. 78, Pl. XLITI, figs. 1 a, b, ¢, 2 a, 
sa, by Pll SLIV, fies) 2) 2¢, 3) Volsllk Part Lip: 43. el; iiaiosnliders-slls 
VII, fig. 1; Vol. VI, Abth. II, pp. 6, 35, Pl. II, figs. 9a, 9b; Pl. XIII, figs. 4, 4b. 
Among the fragments of fronds of Gleichenia there are some which 
agree in all essential particulars with the species named above, but the 
material is too fragmentary and imperfect to justify any positive assertion 
of identity. The plant is much larger and stronger than that which I 
have referred to G. Zippei, the pimne having a length of 10° to 12° and 
the pinnules being from 8™" to 12™™in length. Better specimens will 
undoubtedly be obtained hereafter, and will permit a more satisfactory 
comparison with described species. All we can now say with certainty 
is that a relatively large species of Gleichenia was an element in the Cre- 
taceous flora of the country surrounding the mouth of the Hudson, and in 
any catalogue of the plants constituting this flora this demands a place. 
Locality: Woodbridge. 
GLEICHENIA MICROMERA Heer?. 
Pl. IIL, fig. 6. 
Gleichenia micromera Heer, Fl. Foss. Arct., Vol. III, Part Il, p. 55, Pl. X, figs. 14, 15. 
We have obtained a few fragments of a fern which is more like the 
species to which Heer gave the above name than any other, living or fossil. 
The plant was very delicate, the fronds flexuous, the pinnze narrow, linear, 
leaving the rachis at a right angle, the pinnules ovate or oblong, not more 
than 2™™" or 3™™ in length. 
The material before us is too imperfect to suffice for satisfactory com- 
parison, and yet we have here traces of a very beautiful and distinctly 
marked plant which deserves recognition as one of the minor but more 
attractive elements in the Amboy flora. 
Locality: Sayreville. 
