30 THE FLORA OF THE DAKOTA GliOUr. 



Tribe CYCADEyE. 



Cycadites pungens, sp. nov. 

 PI. II, Fig. 6. 



Froud very rigid, with a broa*! rachis, convex or lialf-rouud on the h)wer 

 side, leaves subopposite, oblique, narrow, linear-lanceolate, sharply acumi- 

 nate, disconnected at base and joining the rachis by their Avliole base which 

 is neither enlarged nor narrowed ; median nerve broad, flat, as broad as the 

 flat borders on both sides of it. 



This fragment is related by the character of the leaves to C. Lorteti Sap.,' 

 the first with broader, longer pinnule;;, the second Avith shorter and broader 

 ones, enlarged and connate at base in both species and merely acute or obtuse. 



Bv the mode of attachment of the pinnules, which are neither nan-owed 

 nor enlarged and disjointed at base, this fragment does not agree perfecth- 

 with the characters of the genus Cycadites which, in Saporta (loc. cit., p. 65), 

 is established for plants with leaves abruptly enlarged at base and decurrent. 

 But the Ijroad simple median nerve and the oblique direction of the very 

 rigid leaves are against the reference of this fragment to any other genus of 

 the Cycade?e. Moreover some of the fragments figured by Saporta (loc. cit., 

 PI. Lxxxiii, Fig. 7, for example) are represented with leaflets squarely joined 

 at base to the rachis, as in our Fig. 6, PI. II. 



Habitat : Kansas. Communicated by Mr. H. C. Towner. 



Cycadeospermum lineatum, sp. nov. 

 PI. I, Fig. 14. 



Seed oblong-ovate, slightlv falcate, rounded at the lower end, short- 

 acuminate at the other; testa smooth, transversely lineate, the lines distant, 

 parallel; carena clearly marked longitudinally on both sides, the inner con- 

 cave, the outer rounded. 



The seed, which is 1.5""" long and 7°"° in diameter, is comparable to the 

 fossil C. hetiangense Saj).,^ which has also the carena marked on both sides 

 but is somewhat broader and not falcate ; and to C. impressum Nath.,^ of 

 which the im])ression shows the same form but without trace of carena. It 

 is also comparable to the seeds of the living Zamia iritegyifoUa, especially by 



'PaMont. Fr.. PI. Jnrass., vol. 2, p. 75, PI. lxxxii, Figs. 1-3, and C. Delessei Sap., Ibid., p. 73, PI. 

 LXXXIII, Figs. 5-7. 



"Pivl^ont. Fr., PI. Jiirass., vol. 2, p. 2:i8, PI. oxvi, Fig. 6. 

 »F1. vid. Bjuf, pt. 2, PI. XVIII, Fig. 11. 



