JURASSIC FLORA OF DOUGLAS COUNTY, OREG. 135 



rounded off there. It is slightly curved. It is 5 mm. long and not quite 

 2 mm. wide. 



Whatever their true position may be, they are evidently very different 

 from the other seeds found in the Oregon Jurassic. 



MALE AMENT OF CONIFER. 

 PL XXXVI, Fig. 13. 

 From locality No. 7 there was obtained a single specimen of a catkin- 

 hke object that seems to be the male ament of some conifer. It is poorly 

 preserved and shows only an axis about 3 cm. long, with the scales of one 

 side only preserved. These are thickly crowded together and overlapping. 

 They are thin in texture and ovate in form. 



PLANTS OF DOUBTFUL AFFINITY. 



Under this head I place a number of forms which are of more or less 

 doubtful character. 



Genus YUCCITES Schimper and Mougeot." 

 YucciTES HETTANGENSis Saporta ? 

 PL XXXVII, Figs. 1, 2. 



1870. Yuccites Jiettangensis Sap. in Schimper: Pal. Veg., Vol. II, p. 427. 

 1886. Yuccites Jiettangensis Sap. : Plantes Jurassiques, Vol. IV, p. 74, pi. ccxxxv [ix]; 

 pi. ccliii [xxvii]. 



Several ribbon-shaped imprints were found, mostly at localities 

 Nos. 2 and 7. They seem to be made by broad grass-hke leaves, but 

 may be caused by thin succulent stems. They have parallel sides 

 and do not diminish in width in the portions preserved. The largest 

 fragment obtained is 125 mm. long, with neither base nor tip preserved. 

 One side or margin is imperfect, and it may have been wider than it 

 now appears. Still, the width of 25 mm. is shown. No definite nerves 

 appear, but irregular and rarely strong nerves are seemingly shown, 



a In view of the general doubt on the part of leading paleobotanists as to whether the forms described under 

 this generic name are really related to the living genus Yucca or represent Monocotyledons at all, I have not 

 thought best to introduce the Angiosperms as occurring in our Jurassic flora. Personally I do not believe that 

 they occur, and it is probable, as Schenk suggests, that if we ever ascertain the true nature of these forms we 

 shall find them to fall into that general line of development that seems to lead from the Cordaitales of the 

 Paleozoic to the Ginkgoales.— L. F. W. 



