64 
occurrence described by Lesquereux nor the Magothy occurrence described 
by Hollick appears to represent the same species as Dawson’s type material. 
The Raritan occurrence may be identical with the type. The material 
from the Upper Blairmore is limited and poorly preserved. It is tenta- 
tively regarded as the same as the type material which came from Mill 
creek, British Columbia. 
Locality CS4. 
Genus, sapindopsis Fontaine 
Sapindopsis magnifolia Fontaine 
Plate X, figure 8 
Sapindopsis magnifolia Fontaine, Mon. U.S. Geol. Surv., vol. 15, p. 297, 
Pl. 151, figs. 2, 3; Pl. 152, figs. 2, 3; PL 153, fig. 2; PL 154, figs. 
1, 5; PL 155, fig. 6 (1890); in Ward, Mon. U.S, Geol. Surv., vol. 
48, pp. 481, 482, 528 (1906); Berry, Proc. U.S. Nat. Mus., vol. 
38, p. 642 (1910); Md. Geol. Surv. Lower Cretaceous, p. 471, 
PL 86; Pl. 87, fig. 1; PL 88 (1911); U.S. Geol. Surv., Prof. Paper 
129, p. 214, Pl. 55, fig. 5; PL 56; PL 57, fig. 2; PL 59, fig. 3 (1922). 
Aralia dubia Fontaine, Mon. U.S. Geol. Surv., vol. 15, p. 314, PL 157, figs. 
1, 7 (1890). 
Sapindopsis obtusifolia Fontaine, Idem., p. 301, Pl. 156, fig. 13; PL 159, 
figs. 3-6. 
Ficophyllum eucalyptoides Fontaine, Idem., p. 294, PL 164, figs. 1, 2; in 
Ward, Mon. U.S. Geol. Surv., vol. 48, p. 489 (1906). 
Sapindopsis tenuinervis Fontaine, Idem., p. 301, PL 153, fig, 1; in Ward, 
Mon, U.S. Geol. Surv-, vol, 48, pp. 489, 528 (1906). 
Rhus uddendi Lesquereux, Mon. U.S. Geol. Surv., vol. 17 (Flora Dakota 
Group), p. 154, PL 57, fig. 2 (1892). 
Knowlton, in Hill, Am. Jour. Sei., vol. 50, p. 213 (1895). 
An imperfect specimen from locality CS4 shows parts of three leaflets 
of a pinnate leaf that appears to certainly represent this important species. 
I quote a description from complete material : 
“Leaves commonly odd-pinnate, although occasional even pinnate forms occur, of 
considerable size, but somewhat variable, however, in this respect. Leaflets 3 pairs, 
comparatively large, lanceolate, tapering almost equally toward apex and base, the latter 
inequilateral except in terminal leaflets, pointed, often lacking apical portions, length 
increasing proximad, averaging about 10 cm., longest seen 14 cm. (estimated), shortest 5 
cm., width varying from 1*1 cm. to 3*2 cm., inequilateral, since the outer half of the 
lamina is broader than the inner half and is markedly decurrent. This feature is least 
emphasized in the basal leaves which may even have a considerable petiole, but becomes 
increasingly pronounced distad, the terminal leaflets often forming a bilobate or trilobate 
whole with the outer margins broadly decurrent and joining the lamina of the leaflet next 
below at the point of junction of its inner margin with the rachis. Certain specimens show 
all of the leaflets petiolate, a feature largely emphasized in a specimen figured by me from 
Stump Neck, Maryland, in 1911, showing three terminal leaflets with petioles 3 to 4 cm. 
in length. The leaflets in this species are much oftener petiolate and lacking in the winged 
rachis than in S. variabilis, in this particular closely resembling the modem Matayba apetala 
in which the rachial wings are vestigial. Leaf substance thick and leathery, epidermis 
firm and glossy. Leaflets commonly subopposite, often markedly so, forming an acute 
angle with the rachis. Midribs stout and prominent below. Secondaries slender, only 
seen on the under surface of the leaflets and even then made out with difficulty, 8 to 10 
J rnirs, branching from the midrib at a rather wide angle especially in the central part of the 
eaf; the angle is more acute basally, curving upward ultimately to join a short branch of 
the secondary next above. Tertiaries fine, forming lax subrhombic areolae where visible.” 
(Berry, 1922.) 
