FOSSIL FLORA. 749 



Aralia sp. 



This fragment is the only one of this type observed, and is too poor 

 to admit of satisfactory identification or characterization if it be new. It 

 consists of a portion of what appears to be the central lobe and 2 lateral 

 lobes of a 3-lobed form. The sinuses are rounded and the middle lobe is 

 enlarged above, with the margins entire. A secondary nerve passes up to 

 the sinuses, and the lobe has about 5 or 6 pairs of alternate much arched 

 camptodrome secondaries. It is quite unlike any other form observed, so far 

 as can be made out. 



Habitat: Hague's Yellowstone Park collection, Fossil Forest section, 

 No. 22c; collected by Wright and Weed, September 20, 1885 (field No., 

 1959). 



CORNACEJE. 



Cornus Newberryi Hollick. 

 PI. GUI, fig. G. 



Cornus Newberryi Hollick, iu Kuowlton : Bull. TJ. S. G-eol. Surv. No. 152, p. 77, 1898. 

 Cornus acuminata Newby : Later Extinct Floras, etc., Ann. Lye. Nat. Hist. New York, 



Vol. IX, 1868, p. 71; 111. Cret. and Tert. PL, PI. XX, figs. 2-4; Plates (ined), 



PL XXXVII, figs. 2-4. 



Represented by a number of well-preserved leaves, agreeing well with 

 Newberry's figures and description. 



Habitat: Yellowstone River, one-half mile and also 1 mile below mouth 

 of Elk Creek, at top of bluff; collected by F. H. Knowlton. Also found 

 on south side of Stinkingwater Valley on high bluff east of the mouth of 

 Crag Creek; collected by Arnold Hague, September 4, 1897. 



Cornus wrightii n. sp. 



PL GUI, figs. 4, 5. 



Leaves of firm texture, elliptical-lanceolate, narrowed below and 

 apparently slightly decurrent, rather obtuse at apex; margin perfectly 

 entire; midrib rather thin, slightly flexuose; secondaries 4 or 5 pairs, lower 

 pair opposite, others alternate, at various ahgles, curving along the margin 

 and in the upper part, turning by a broad bow to the apex ; nervilles few, 

 approximately at right angles to the midrib; finer nervation not preserved. 



