[PENHALLowW] CRETACEOUS AND TERTIARY PLANTS OF CANADA 39 
the limit of the geological range, and that it there represents the 
culminating form of the type in association with the obviously depau- 
perate T. plumosa. 
SAGENOPTERIS NILSONIANA (Brongn.), Ward. 
Fontaine, The Older Mesozoic of Virginia. U.S. Geol. Surv., Mem. VI., 104, 
1883. ‘ 
Ward, The Mes. Flora of the U.S. U.S. Geol. Surv., Ann. Rept. XX., 352, 
1898-99. 
Schimper, Paléontologie Végétale, I., 642. 
Brongniart, Hist. des Veg. Foss., I., 225, 1828. 
Jurassic (Oroville Beds) of California; Lower Cretaceous of Queen Charlotte 
Islands (Maud Island and Alliford Bay). 
The specimens in the Queen Charlotte Island collection were 
obtained from Maud Island and Alliford Bay. One specimen from 
Maud Island represented a partial pinnule with a perfect apex but 
no base. It measured 5 cm. in length and 3 em. in width at its 
greatest expansion. In form it is narrowly obovate with a well defined 
and rounded apex, and an entire margin. The midvein is not obvious. 
The veins are quite prominent and appear as diverging lines, but 
there is no evidence of anastomosing. Except in point of size, the 
specimen compares very closely with Ward’s figure of Sagenopteris 
nilsoniana ! from the Oroville beds of California. Another nearly 
complete specimen measured 9 cm. by 4 cm. at its greatest width. A 
pronounced midvein extends from the base to within 3 cm. of the apex 
where it disappears. The characteristic anastomosing of the veins 
is clearly shown, as depicted by Fontaine,? while the specimen as a 
whole is that figured by Ward.* 
The four smaller and less perfect specimens from Alliford Bay 
show the veins but no anastomosing. 
In all of these specimens it is impossible to find any means of 
satisfactorily differentiating them from the Oroville material, and, as 
the mere element of size is of no great value in a species of such 
strongly polymorphic tendencies, I do not hesitate to refer them to 
Sagenopteris nilsoniana. 


* (Mesozoic Flora of the U.S., 352, Pl. LVI., 1; LVII., 2. 
* Older Mesozoic of Virginia, Pl. XLIX., 5. 
#5 Mesozoic Flora of the U.S., Pl. LXVII., 2. 
