360 OLDER MESOZOIC FLORAS OF UNITED STATES. 
CreNOPHYLLUM ANGUSTIFOLIUM Fontaine. 
Pl. LXIIL, Figs. 2, 3. 
1896. Clenophyllum angustifolium Font.: Ava. Jour. Sci., 4th Ser., Vol. TH, p. 274. 
This plant was found in two small imprints, occurring on the same 
fragment of rock at the locality ‘‘Bank of Feather River,” etc. 
Although the amount of material is so small, it is enough to show 
certainly that the plant is quite different from any other cycad occur- 
ring in the Oroville region. The most complete specimen, shown in 
Pl. LXIII, Fig. 2, has a midrib 4 cm. long and 1 mm. wide, with 
several leaflets going off on each side. Only the basal portions of 
these are preserved, the largest being only 35 mm. long. ‘The leaflets 
make right angles with the midrib, are only 1 mm. wide, and are 
slightly expanded at base. The nerves are only three or four in 
number and strong, but they are not very distinctly shown. 
This plant is plainly one of the narrow-leaved Ctenophylla of 
the type of Ctenophyllum Braunianum. It is especially like the form 
depicted in Mon. U.S. Geol. Survey, Vol. VI, pl. xxxiv, fig. 4, but 
the leaflets are closer in the Oroville plant. 
Genus PODOZAMITES Friedrich Braun. 
PopOzAMITES LANCEOLATUS (Lindley and Hutton) Friedrich Braun. 
Pl. LXIU, Fig. 4; Pl. LXIV, Fig. 1; Pl. LXVI, Fig. 4; Pl. LXVI, 
Figs. 3, 4. 
1836. Zamia lanceolata L. and H.: Foss. Fl. Gt. Brit., Vol. III, p. 121, pl. exciv. 
1840. Zamites lanceolatus (L. and H.) Fr. Braun: Verzeichniss Kreis-Nat.-Samml. 
Bayreuth Petrefact., p. 100. : 
1843. Podozamites lanceolatus (L. and H.) Fr. Braun in Miinster: Beitr. z. Petrefac- 
tenkunde, Vol. II, Pt. VI, p. 33. 
A large number of imprints of this plant are found at the locality 
‘‘In the bed of a ravine that leads from the: Banner mine,” etc., and 
at least one was obtained from the locality “‘ Bank of Feather River,” 
etc. ‘The most common are detached leaflets, but some imprints are 
found with the leaflets attached. The leaves are rather variable in 
size, but the average, or normal forms, can not’ be distinguished from 
those that Heer describes from Cape Boheman.' The larger leaflets 
are exactly like the larger ones from Cape Boheman and surpass in 
size any of the species of P. Emmonsiz or of the type form of Lindley 
and Hutton. 
This plant is of special importance in fixing the age of the strata 
containing it, as, next to Teniopteris orovillensis, it is the most abun- 
1¥Flora Foss. Arct., Vol. IV, Pt. I, Beitrige zur Foss. Flor. Spitzbergens, p. 35, pl. vii, figs. 1-7. 
