J 



I 



^ 



THRE5 NEW RHAMNI. 267 



tologically with the entirely distinct R. iomeyitella of middle 

 and northern California. 



Rhamnus ei^lipsoidea. I^eafy and fruiting branches of 

 the season light-green, and, with the leaves, devoid of all 

 tomentellous indument, merely hirtellous and thinly so: 

 leaves elliptical, 3 inches long, 1>4 inches wide, of thin 

 texture, finely serrulate, conspicuously feather-veined beneath 

 and the veins hirsutulous : fruits low-pyriform, black, 3- 

 seeded ; seeds of obovate outline, convex dorsally, ventrally in 

 a manner angular, the suture being elevated, the color dark 

 brown. 



San Jos6 Mountains, Sonora, but near the U. S. boundary, 

 3 Aug., 1893, Edgar A. Mearns. Type on U. S. Herb, sheet 



231267. 



isolated 



habitat of that species, and strongly differentiated- It may be 

 looked for within some mountainous districts of extreme south- 

 western Arizona. 



Rhamnus confinis. Young branches with some tomentu- 

 lose indument, those of a year old glabrate and reddish : leaves 

 oval to lance-oval, the more strictly oval ones 3 inches long 

 and 2 in breadth and very obtuse, others longer, narrower and 

 more or less definitely cuspidate, all thinnish, distinctly serru- 



beneath 



between 



seeded 



Cajon Creek, Chihuahua, Mex., near the boundary line, 

 E. A. Mearns, 2 July, 1892 ; type in U. S. Herb, sheet 

 260274, 



A Handful of Vetches. 



ViciA pkrangusta. Stems very slender, a foot high or 

 more, quadrangular by very prominent obtuse callous angles, 

 ) glaucous-green : leaflets 10, narrowly linear, 1/4 inches long, 



