1887.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 45 



Leaves rhomboidal-oval, acumiuate, wedge form at base in narrowing 

 to the petiole, dentate on the borders, obscurely palmate-nerved ; lateral 

 primary nerves two, joining the middle a little above the base of the 

 leaves, slightly more oblique than the secondaries and a little more 

 distant of the lower pair of secondaries than these are from each other; 

 secondaries slightly curved in passing to the borders craspedodrome. 



The leaves vary much, especially in width, from 5 to 9 centimeters 

 long and 3 to 4^ centimeters broad in the middle, the acumen being G to 

 8 millimeters long. The medial nerve like the secondaries is distinctly 

 marked but not broad ; the lower primaries are oblique, passing nearly 

 straight to the borders, at an angle of 30°; the secondaries, 5 to 6 pairs, 

 are a little more open and curved in passing up, entering each one of the 

 small rather obtuse teeth of the borders. The areolation is made by 

 transverse nervilles anastomosing at right angles to the nerves near the 

 borders by short divisions passing up the sinuses or curved along the 

 borders. 



The species is very similar to G. viburnifolia Ward, Types of the 

 Laramie Flora, Bulletin U. S. Geol. Surv., No. 37, p. 89, PI. XL, f. 2, 

 from which it differs by the leaves being generally narrower at the cune- 

 iform base with a long, sharply-pointed acumen ; the teeth less numer- 

 ous, less marked, and obtuse, effaced from the middle downward. Ex- 

 cept the acumen the difference is not very great, and as those leaves 

 differ much in their width they might (but for the apex) be referred to 

 the same species. The petiole is of the same length, about 2 centimeters. 



Eight specimens ; Museum number, 2363 ; lot number, 9. 



Upper Kanab Valley, Utah ; C. D. Walcott, collector ; three speci- 

 mens ; Museum number, 2365 ; lot number, 8. 

 397. Grewiopsis "Walcotti, n. sp. PL IV, tigs. 3, 4. 



Upper Kanab Valley, Utah ; G. D. Walcott, collector. 



Differs from G. acuminata by the broader leaves, scarcely dentate on 

 the borders, and apparently not acuminate. There is, however, a dif- 

 ference in the leaves which are more or less dentate on the border, and 

 as the top of the three leaves of this species are destroyed they may be 

 the same, there being scarcely any difference in the nervation. 



Three specimens ; Museum number, 2364 ; lot number, 8. 



STERCULIACEiE. 



198. Pterospermites dentatus ? Heer. 



Upper Kanab Valley, Utah; C. D. Walcott, collector; one specimen; 

 Museum number, 2399. 



NYMPHiEACEiE. 



199. Nymphaea ? scars of, on roots. 



" Mouth of Indian Creek;" collector unknown; two specimens ; Mu- 

 seum number, 2405 ; lot number, 42. 



