[PENHALLOW] CRETACEOUS AND TERTIARY PLANTS OF CANADA 37 
TÆNIOPTERIS PLUMOSA, Dn. 
Dawson, Trans. R. Soc. Can., I., iv., 24 (1883). 
Lower Cretaceous of Alliford Bay, Q.C.I.; and Baynes’ Sound, Vancouver 
Island. 
One small fragment from Alliford Bay is evidently identical with 
Tæniopteris plumosa as described by Sir William Dawson from the 
Upper Cretaceous of Baynes’ Sound. 
TÆNIOPTERIS OROVILLENSIS, Fontaine. 
Fontaine, Amer. Journ. Sc., Ser. 4, II. (1896), p. 274. 
Ward, Mesozoic Flora of the U.S. 
Ann. Rept. U.S. Geol. Surv., XX. (1898-1899), 384. 
Jurassic (Lower Oolite) of Oroville, California; Upper Cretaceous of Port 
McNeil, Vancouver Island. 
The material representing this species is from the Upper, Creta- 
ceous formation at Port McNeil, Vancouver Island. It consists of a 
fragment of a stipe and four fragments of fronds. The fragment 
of the stipe measures 38 mm. in length. The basal end is 9 mm. wide, 
and from this it gradually diminishes upward to a diameter of 5 mm. 
For a distance of 22 mm. from the basal end, the structure is intact 
and the surface shows fine, parallel striæ about 1 mm. distant. The 
upper 16 mm. of the specimen show one-half of the structure to have 
been removed, evidently in the splitting of the matrix, so as to expose 
a section in the median plane, and here a differentiation of structure 
is manifested in the occurrence of a lighter streak or longitudinal 
band which serves to suggest the exposure of one of the vascular 
bundles in section. The whole specimen has been much flattened 
by pressure, and it is in such a condition as to render sectioning 
imexpedient. 
With one exception the leaf fragments show a strong midrib and 
more or less well defined venation. The apex is not represented, but 
the base is poorly shown in one instance. The frond enlarges upward 
gradually, from a narrow base to a width of 5-5 em. In the largest 
specimen the length of the frond must have been about 20 cm. when 
complete. The margin is perfectly entire in all cases. The very 
strong midrib ranges in width from 2 mm. to 3 mm. in the largest 
specimen, and when well preserved it is strongly but finely rugose. 
The veins are strictly simple. They leave the midrib at an angle of 
