32 FLORA OF THE MONTANA FORMATION. 
antiqua Dn., or Nelumbo Dawsoni Hollick, as it is now called, from the 
South Saskatchewan Biver, British Columbia. 
Habitat. — Point of Bocks, Wyoming. 
OTTELIA AMERICANA Lx. 
Ottelia americana Lx., Ann. Rept. U. S. Geol. and Geog. Surv. Terr. 1873, p. 300 
(1874); ibid, for 1876, p. 501 (1878); Tert. PL, p. 98, PL LXI, fig. 8 (1878). 
The type of this species, and the only specimen ever obtained, is pre- 
served in the United States National Museum (No. 54!)). It has been 
satisfactorily described by Lesquereux, but the drawing is not so full 
as it should be. The outline and wrinkled appearance of the wing are 
well shown, but the fine longitudinal striation is omitted. 
Schenk l is of the opinion that this species should be united with 
Pistia corrugata Lx. and Lemna scutata Dn. Judging from the figures 
alone, this view may seem probable, but an examination of tbe speci- 
men shows at once that it is quite distinct from these species. The 
spathe is oval, thick, narrowed to a striate petiole, and is surrounded 
by an undulate wrinkled wing, which is provided, as indeed is the spathe, 
with numerous fine longitudinal striae. There is no trace of the areola- 
tion so characteristic of Pistia corrugata. 
Habitat. — Point of Bocks, Wyoming. 
Oyperacites sp. 
PL V, fig. 8. 
The specimen figured is a mere fragment that appears to belong to 
this so-called genus. It is preserved for a length of 3.5 cm., is about 
1 cm. wide, and, as may be observed from the drawing, is strongly 
keeled. The veins are obscure and can hardly be made out with 
certainty. It is too fragmentary for further characterization. 
Habitat. — Point of Bocks, Wyoming. 
Sabalites Grayanus Lx. 
PL VI, fig. 5. 
Sabalites Grayanus Lx., Tert. FL, p. 112, PL XII, figs. 1, 2 (1878); Ann. Rept. U. S. 
Geol. and Geog. Surv. Terr., 1876, p. 502 (1878). 
Sabal Grayana Lx., Trans. Am. Phil. Soc., Vol. XIII, p. 412, PL XIV, figs. 4-6 (1869); 
Ann. Rept. U. S. Geol. and Geog. Surv. Terr., 1870, p. 381 (1871); ibid., 1873, 
p. 380 (1874); ibid., 1874, p. 301 (1876). 
This species has been reported by Lesquereux from a large number 
of localities, and most of the specimens are in the United States 
National Museum. These determinations are based on fragments of 
greater or less size, and in most cases must be regarded as open to 
grave doubt. The specimens upon which the species is founded came 
J Zittel, Handbuch d. PaUeontoL, Abth. II, p. 378 (1890); Die Fossilen Pflanzenreste, p. 203, (1888). 
