1 1 ^^ MESOZOIC FLORAS OF UNITED STATES. ■""" 



strongly awa>- from the leaflets. These are now j)reserve(l only in their 

 lower portions. The nerves are single, strong, parallel, and vaguely 

 shown. 



(Iciius ('Y('Al)EOSPERMOI Saporta. 



Cyc ADKOSPKHMIM OREGONENSE FolUaillc II. S|). 



PI. XXIX. Fij;. 4. 



A single specimen of a small nut-like seed was found at locality 

 Xo. 2. It seems to be the seed of some cycad. It is hard and ])ony, 

 with a smooth polished surface. It is elliptical in form and narrows 

 to both ends, one of which is rounded off, while the other is somewhat 

 prolonged into a short acute tip. It is widest in the middle and is there 

 6 mm. w'ide. The length is 10 nun. 



't->' 



CyCADEOSPEK.MI'M OVATl'.M P'oIltailK' 11. sp. 



PI. XXIX, Fill. 5. 



A single specimen of a sniall nut was obtained from locality No. 7. 

 It is apparently the seed of some cycad. It has a hard, l)ony, and 

 smooth surface. It is widest at its base and is rounded off there. It 

 narrows to the opposite end, which is obtuse. At this end there is a 

 ridge which runs up a little way into the body of the nut. This may 

 l)e due to puckering from pressure, causing a wrinkle, but this is not 

 pi-ol;able. The nut is 10 mm. long and 6 mm. wide at base. 



Order BENNETTITALES. 



Family BENNETTITACE.E. 



Genus WILLLUISONIA Carriitlu-rs. 



Wii.LiAMS(»Ni.v oREGONENSis Fontaine n. sp. 



PI. XXIX, Fig. 6. 



A single fine specimen of the inflorescence of a Williamsonia was 

 found at locality No. 7. There is nothing to show a connection between 

 this plant and the numerous cycads found at that locality. On the 

 same piece of rock, however, a well-preserved fragment of Pterophyllum 

 cequale (Brongn.) Nath. occurs. The fossil is large and globular in 

 form, showing a whorl of bracts incurved so as to hide any object wdthin 

 them. The ijracts are thick in texture and without any midnerve. 



