2o4 AiKso'/orr floras of rxrrKn statfs. 



entire lateral pinnule, PI. LX\'. Fig. 30, and the greater portion of a 

 terniinal one. Fig. 31, oceiu' among the impressions. These fossils can 

 not well be distinguishefl from Schenk's Sagenopteris Mantelli," which 

 occui-s in the W'ealden formation of Xorth Gemianv. The only differ- 

 ence lietween this and Schenk's fossil is the fact that in the California 

 plant the pinnules are somewhat smaller than the German ones and 

 the midrib in the t-erminal pinnule more prolonged. The piimules of 

 this Sagenopteris must have^been easily detached, for in both the Cali- 

 fornia and the Xorth German specimens they have been found only in 

 a detached condition. This type of Sagenopteris is smaller than the 

 characteristic form of the Rhetic 5. Xilsoniana (Brongn.) Ward (S. 

 rhoifolia Presl). 



One small specimen of a Sagenopteris, represented in PI. LX^', 

 Fig. 34, was found by ]\Ir. Will Q. Brown "beneath the bridge at Riddles, 

 Oreg." The specimen now in question show.s portions of three leaf- 

 lets, so arranged as to indicate that they belonged to the same indi- 

 vidual plant. The most complete leaflet, which was probably the 

 central one of the group, has its basal part nearly complete. It was 

 probably elliptical in form, narrowing wedge-shaped to the bavSe. The 

 end is not preserved. It was probabh" 3 cm. long. Its greatest width 

 is 13 mm. The best preserved lateral leaflet occurs on the right side. 

 It is unsymmetrical, with the base and end not shown. The midrib 

 disappears about one-thuxl of the distance from the base to the end 

 of the leaflet. The secondaiy nei"vation is strong and the anastomosis 

 occure at short interv^als, forming small elliptical meshes. This plant. 

 like the original S. Mantelli, is smaller than the Sagenopterids of the 

 Trias and Jura. It is especially distinguished ))>■ the closeness of its 

 anastomosis and its regular meshes.'' 



" Die Foss. Flor. d. N'ordwest. Wealdenform., p. 20, pi. x, fig. .5 (PalnpnntographicH, Vul. XIX. p. 222, 

 pi. xxxi, fig. .5). 



'' The small specimen collected by Mr. Brown on Iron Mountain Creek -most probably belongs to this 

 species. In a letter returning it on October 21, 1901, Fontaine says: 



" It is far from being an unrecognizal)lc plant fragment. It seems to have a pronounced midnerve, running 

 nearly to the end of tlie leaf, but thai. I think, is due mainly to a pucker in the leaf. I think the leaflet is a 

 Sagenopteris, most likely .S'. Marttelli." It is figured on PI. LXV, Fig. 3.5. — L. F. W. 



