JURASSIC FLORA OF DOUGLAS COUNTY, OREG. 109 



with a prolonged tip. Fig. 6 shows a narrowly elliptical entire leaf, with 

 an apparent midnerve. Fig. 7 gives a part of one of the smallest broadly 

 elliptical forms, with the tip not prolonged, showing a seeming mid- 

 nerve. Fig. 8 shows one of the small narrowly elliptical leaflets. Fig. 9 

 is an enlargement of this. Fig. 10 represents two of the smallest leaflets, 

 having a very narrow elliptical shape, and showing a seeming midnerve. 



The plant is rare everywhere, and is most common at locality No. 7. 

 It is found also at localities Nos. 1, 16, 17, and 19. 



PoDOZAMiTES PACHYPHYLLUS Fontaine n. sp. 

 PL XXIV, Figs. 11-16. 



The plant here considered as forming a new species of Podozamites is 

 found in the form of detached leaflets and fragments of leaflets at several 

 of the Oregon localities. It is rare, and the specimens are mostly not well 

 preserved. Still, enough is shown to indicate that the plant is a pretty 

 well characterized new species. Its true position, however, must remain 

 doubtful. It agrees well enough with Podozamites to be placed in that 

 genus. 



The leaflets are linear in form and narrow toward their bases, after the 

 fashion of Podozamites. They narrow also somewhat toward their tips, 

 which are obtusely rounded off. They have a remarkably thick and 

 leather-like texture and stand out in films of coal on the rock. The widest 

 of them is 6 mm. wide in its widest part. The longest seen, which were 

 not quite entire, are 6 cm. long. The bases are not well enough preserved 

 to show the probable mode of attachment. Several of the leaflets seem to 

 show the true base, and to indicate that they were narrowed to about half 

 the average width of the leaflet, and were attached by the narrowed 

 portion. The nerves are 7 to 10 in number and are characteristic. They 

 are approximately parallel to one another and to the margins of the leaf- 

 lets. They are mostly single, but a few branch once, on entering the 

 wider part of the leaflet above the base. They seem to differ in strength, 

 the central ones being stronger; at least in many cases the central ones 

 are much more distinct than those nearer the margins, and sometimes can 

 be plainly seen where the others are not visible. The leaflet then looks 

 as if it had only 2 or 3 nerves running up its middle. This suggests an 

 affinity with Torreya, but the marginal nerves are really present, although 

 not so distinct. This is the case with the thickest leaflets. This plant 



