KNOWl.TON] KOOTANIE PLANTS FROM GREAT FALLS, MONTANA 113 



nervation, but this does not impair its stratigraphic value, since it 

 can be readily recognized in future. 



It may be noted in passing that Heer's Adiantum formosum is 

 antedated by A. formosum R. Brown [Prod. Fl. N. Holland], 1810, 

 p. 155], a living species of Australia and New Zealand. 



Locality. — Meridith mine, 3 miles southeast of Nollar's ranch and 

 6 miles southwest of Geyser, Cascade County, Montana. 



OLEANDRA GRAMIN^EFOLIA n. sp. 



Plate XI, Figs. 5, sa, 6, 6a 



Cephalotaxopsis ramosa Fontaine? in Ward, Monog. U. S. Geol. Survey, 



No. 48, 1905 [1906], p. 311, pi. lxxiii, fig. 8. 

 /Pin us (Cyclopitus) nordenskioldi HEER. Dawson, Trans. Roy Soc. 



Canada, vol. 10, 1892, sec. iv, p. 88, fig. (in text) 9. 



Fronds detached, narrowly linear and grass-like, long acuminate 

 at apex ; [base not seen] ; midrib relatively very strong ; nerves fine, 

 close parallel, at right angles to the midrib, forking once, usually 

 just at the base; [fructification not seen]. 



This species is represented by a large number of detached fronds 

 which are scattered over and matted together on and in the matrix. 

 There are no complete fronds, nor any evidences of the manner in 

 which they were attached, though quite a number show the apex, 

 which is seen to be narrowly acuminate. The length was more than 

 4 cm., for there are fragments this long, though most of them are 

 shorter, while the width is from 2 to 3 mm. The nervation is very 

 difficult to make out, but where it can be observed it is found to con- 

 sist of a very thick midrib and numerous close parallel veins which 

 fork near their point of origin in the midrib ; no fruit was observed. 



To the casual observer these little detached and more or less 

 matted fronds appear like the tangled leaves of grasses or the de- 

 tached leaves of conifers (like Piuus), and it is only by the most 

 careful scrutiny that their real nature can be made out. At first 

 it was supposed that they must represent a small, very narrow-leaved 

 Tccuioptcris, but the forking of the veins close to the midrib seem 

 to place them nearest the genus Olcandra. The fronds, however, 

 are much smaller and narrower than in any living or fossil species 

 known to me. 



In working up the material from Geyser, Professor Fontaine noted 

 the presence of a number of "detached leaflets," which he referred 

 somewhat doubtfully to his Cephalotaxopsis ramosa of the Lower 

 Potomac beds of Virginia. Fortunately this material is preserved 



