JURASSIC FLORA OF DOUGLAS COUNTY, OREG. 133 



species, for he seems to have been rather lavish in his application of the 

 name, but it can hardly be assumed that the long Pinus-like leaves given 

 by Heer from some localities are a Cyclopitj^s, or anything like it, for they 

 are much longer than any of the forms that Schmalhausen gives of his 

 Cydopitys Nordenskioldi. 



Genus SPHENOLEPIDIUM Heer. 

 Sphenolepidium oeegonensb Fontaine n. sp. 

 PI. XXXVI, Figs. ,3-8. 

 A considerable number of specimens of a new species of Sphenole- 

 pidium were obtained from the Oregon localities. This is the fossil referred 

 to as Sphenolepidium Kurrianmn (Dunk.) Heer in a letter from myself to 

 Professor Ward, quoted in Professor Ward's account of the Oregon 

 Jurassic flora.'' It was so r-ef erred from the examination of very imperfect 

 specimens then in hand. The specimens obtained later are, it is true, 

 all poorly preserved, but on some the leaves are well enough shown to give 

 their true character, which indicates that the plant is a new species. The 

 branches are slender and wide spreading. The leaves are small and have 

 the form of an open sigmoid curve with incurved tips, the latter being 

 quite obtuse. The curvature of the leaves* resembles that of Pagiophjd- 

 lum, to which genus I at first supposed the plant to belong. Unlike Pagio- 

 phyllum, the leaf is not wider at base than elsewhere. The leaves are 

 rather slender and of delicate texture, so that they have suffered much in 

 fossilization, the stems showing mostly only traces of them. They are 

 closely appressed to the stem, about half the length of the leaf adhering to 

 the stem and being decurrent on it. Only the upper portion is free. The 

 midnerve could not be made out fully. Often, from maceration, the 

 remnants of the leaves appear more acute than they really are. Occa- 

 sionally a short branch may be seen bearing a cone. These cones have 

 generally been too poorly preserved to show fully the character of the cone 

 scales, but their arrangement gives fairly well the shape and size of the 

 cone. The cones are about 8 mm. long and 5 mm. wide, and are oblong in 

 form, resembling the cones of some of the Sphenolepidia of the Potomac 

 formation. The scales are wedge-shaped and seem to have had shield- 

 shaped ends. 



« Twentieth Ann. Rep. U. S. Geol. Surv., Pt. II, 1900, pp. 369-370. 



