68 FOSSIL FLORA OF THE JOHN DAY BASIN, ORP:(a)N. [bull. JOl. 



the teeth of nearly e({Uiil size, obtusely pointed; niidril) very thick, 

 especially l)elow; secondaries about ten pairs, mostly stronu-, alternate 

 or a few opposite, arising- nearly at a right angle on one side and at an 

 angle of about 20° or 25° on the other, strongly camptodrome, arch- 

 ing far below the margin and joining the secondary next above by 

 a broad loop, with a series of loops on the outside from which nervilles 

 enter the teeth; nervilles numerous, strong, irregular, often broken, 

 producing large areas which are filled ])y a very regular fine network. 



The tyipe of this species is nearly 4 cm. in length and is a little more 

 than 2.5 cm. in width. It appears to have been a rather thick leaf, 

 ovate in shape, with a finely serrate margin, a thick midrib, and about 

 ten pairs of strong, camptodrome secondaries, which divide and arch 

 far inside the margin. 



While 1 am not absolutely certain that this leaf should properly be 

 referred to Prunus, it agrees so closely in a general way with various 

 living species of this genus that it has been tentatively placed under it. 

 It is, for instance, ver}- similar to certain forms of P. virginiana, P. 

 deiJtfssa, etc. It is also quite like some species of C^'donia, as O. 

 japonica, the flowering quince, but it is hardly likely that this genus 

 was natural to this country. In any case the species is a well marked 

 one and can readily l)e identified as a stratigraphic mark. 



This species is named in honor of Dr. John C. Merriam, of the Uni- 

 versity of California. 



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

 Grant Count}^, Oregon. Collected by Merriam \s expedition of 1900 

 (Mus. Univ. Cal., Nos. 886, 887) and by Knowlton and Merriam, 1901 

 (U. S. Nat. Mus., No. 8514). 



Pkunus? tufacea n. sp. 



PI. XI, fig. 4. 



Prunns n. sp., Knowltou in Merriam, Univ. Cal., Bull. Dept. Geol., Vol. II, No. 9, 

 p. 309, 1901. 



Leaves semicoriaceous in texture, elliptical or elliptical-obovate, 

 slightly unequal sided, rather abruptly wedge shaped at base, and 

 similarh" narrowed at apex; margin finely, sharply, and evenly serrate 

 throughout; petiole thick and strong; midrib rather thick, especially 

 below; secondaries about eight or nine pairs, opposite in the lower 

 portions, alternate above, arising at an angle of al)out 80° or less and 

 camptodrome, forking well below the margin and joining the one next 

 above \sy a broad loop, and apparentl}^ with thin nervilles passing to 

 the teeth: nervilles strong, mainly broken; finer nervation producing 

 minute areolae. 



These leaves are about 3.5 cm. long and 2 cm, broad. The thick 

 petiole is over 1 cm. long. The marginal teeth are fine, regular, and 

 sharp pointed. 



