f avd J 304 
ORGANIC REMAINS, 
escespt bling of organic remains collected by Captain J. C. pene in 
the geographical survey of Oregon and ae veers by James 
Hull, palzontologist to the State of New Fe 
* 
‘Priates I anp DIL 
Fossil ferns, etc. 
The eter here described are all from one locality, in longitude 111°, 
‘latitude 414°. ‘They occur in a light-gray indurated clay, which isentirely 
free from calcareous matter, very brittle, and having a very imperfect slaty 
structure. “Nearly all the species differ from any described in Brongniart’s 
Hist. Veg. Foss.,’ in Goppert’s “Systema Filicum Fossilium,” or in Phil- 
lips’s “ Geology of Yorkshire.’’ 
i SPHENOPTERIS FRreMonri. Pi. Ss figs. 3, 3.a. (No. 118 of collection.) 
Compare rong. Hist. Ves. Foss. i, ps 187,t. 56, f. 3. 
Description. —Frond Sy aati (or tripinnate ?) stron 
striated ;, pinnze oblique to the rachis, rigid, moderately approximate, alter- 
nate ; pinnules subovate, somewhat decufrent. at. the base, about three or 
four lobed ; fructification very distinct in saad: so (capsules) of carbona- 
mc matter upon the margins.of the pinnules. 3.4, a partion twice mag- 
I have named. this beautiful and unique monies in honor of Captain Fré- 
mont, and asa testimony of the benefits that science has derived from his 
valuable explorations on the west of the Reeky. mountains. 
2. SpHenopTerts TrtLopa. Pl. 1, fig. 8. (Nos, 65, 79, and 80, of collec- 
tion. 
Deseription.—Frond bipinnate, or tripinnate ; rachis slender, flexuous; 
pinne long, flexuous, distant, opposite, perpendicular to the rachis; pin- 
nules.oblong, sub-trilobate, opposite or ‘alternate, narrow at base, distant, 
ieular. 
~The distant, long, and flexuous: peter the small oe SS 
distinguish this species. In ene Ss features, it approaches so the 
es A one (Brong.,) but differs essen ntiidiyein thexinallerpiowales, 
: nearly opposite, and in never —_ more than sub-trilo- 
iaaes in a iphilt they are often deeply 5-lobed. 
3. Seeewonrsais (?) pauciroxia PI. 2, figs. 1, 1 a, 1 6, 1 ¢c, 1d. (No. 
118 of coll een -) 
De: 
siral ht b 
a, opposite or eealtern ‘ arate or aitinoae at eames acre oly 
aire af digitate b not apparent. 
_ ies waa evidently a beautiful fern of large size, with aendels 
sles fe ge, giving ita peculiarly delicate eee nce. In some of i 
_ ‘Varieties, te pie 1 8,) it yp as digitata; Phillips’s Geol. 
