JTRASSIC FLORA OF DOFCiLAS COFNTV. OHFCF 1:^)3 



species, foi- ho seems to have been rather lavish in his application of the 

 name, Init it can hardly 1)0 assumed that the lonji Pimis-like leaves fjiven 

 Iw Heer from some localities are a (yclopitys, or anylhiiiii like it, for they 

 are much longer tlian any of the foi-ms that Schmalhausen gives of his 

 CyclDinlij^ Xonlenskioldi. 



(Icinis SPHENOLEPIDIUM Floor. 

 Sphenolepidium oreconense I'^oiitainc ii. sp. 

 PI. XXXV], Fi<r.s. 3-S. 

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

 pidium were olitained from theOregon localities. This is t he fossil referred 

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

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

 Jurassic^ flora." It was so referred 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 ti'ue 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 Pagiophyl- 

 him, 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. The}' 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 the}' really are. Occa- 

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

 generalh' been too poorly preserved to show fully the character of the cone 

 scales, l)ut 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. 



