KNowi.TON.] DESCRIPTION OF SPECIES. 37 



little hesitation to Jtu/lanx ovccjoiiiana. Most of them are smaller than 

 the t3'pe, being- often only 7 cm. long and 2.5 cm. wide, ulthouoh occa- 

 sionally there is one that approaches it in size. In shape, marginal 

 teeth, and nervation they are practically identical. 



In 18S8 Lesquereux" estiiblished \n^ Elmi^ Jicndirt! on two speci- 

 mens, one of which is figured and is to be taken as the t3^pe of the 

 species. Regardino- the other he says: "To these I refer a small 

 oblong-lanceolate leaflet, rounded in narrowing rapidly to the point of 

 attachment, very short petioled, with small teeth and areolation iden- 

 tical. '' This specimen (U. S. Nat. Mus., No. 2582) is identical with 

 certain of the smaller leaflets of Juglans oregoniana^ and is referred 

 to it. 



In my paper on the plants of the Payette formation of Idaho 1 

 ventured to describe,'' under the name of Juglans hespet'ia^ a fine, large 

 leaflet. Attention was called at the time to the fact that it was ver}^ 

 close to, if not identical with, Juglans oregoniana. Since that time I 

 have again gone over the Pa3^ette material and have decided that the 

 difl'erences are not sufficient to warrant keeping them separate. 



Locality. — Van Horn's ranch, about 12 miles west of Mount 

 Vernon, Grant County, Oregon. Type in Mus. Univ. Cal. collected 

 by C. D. Voy. Obtained by Maj. Charles E. Bendire (U. S. Nat. Mus., 

 No. 2582), Merriam's expedition of 1900 (Mus. Univ. Cal., No. 891), 

 and by Knowlton and Merriam, July, 1901 (U. S. Nat. Mus., Nos. 9049, 

 9050, 9051). One mile northeast of Belshaw's ranch. Collected by 

 Knowlton and Merriam, July, 1901 (U. S. Nat. Mus., Nos. 9043-9018). 

 Two miles southeast of Marsh post-office, Boise County, Idaho (U. S. 

 Nat. Mus., No. 8290). 



HiCORIA? OREGONIANA n. Sp. 



PI. V, figs. 3, 4. 



HicoRiA n. sj)., Knowlton in Merriam, Univ. Cal., Bull. Dej)!. Geol., Vol. II, No. 9, 

 p. 289, 1901. 



Leaflets subcoriaceous in texture, ovate- lanceolate, obtusely wedge- 

 shaped and slightl}^ unequal-sided at base, acuminate at apex; margin 

 finely serrate, the teeth short, sharp; midrib thin, straight; secondaries 

 numerous, about fifteen pairs, alternate and at somewhat irregular dis- 

 tances, thin, arising at various angles (l:5°it) and considerabl}^ arching 

 upward, craspedodrome, ending in the marginal teeth; nervilles num- 

 erous, thin, percurrent, about at right angles to the secondaries; finer 

 nervation perfect, forming a fine, irregular network. 



This is represented at present b}' two examples. One is 13 cm. long 

 and (! cm. wide, and the other is 12 cm. long and 5 cm. wide. 



oProc. X\ S. Nat. Mus., Vol. XI, p. 15, PI. IX, fig. 2. 



('Kiglitoeiith Atm. Kept. U. S. Geol. Survey, Ft. Ill, p. Tl'i, PI. XCIX, fig. S, 1898. 



