84 BOTANY. 



Negundo aceroides, McEnch. — Santa Fd, N. Mex., along water-courses 

 at 7,044 feet altitude. (20.) Arizona and Utah. 



ANACARDIACE^. 



Rhus virens, Lindh. (PI. Lindh. 2, p. 159). — Shrub, 4-6° high, with 

 bark much resembling Kalnria latifolia ; leaflets (in my specimens) 3-5, 

 rigidly coriaceous, insequilateral (terminal one largest), entire and under 

 surface thickly sprinkled with black dots ; sepals and subtending bracts 

 tinged with red, petals white, flowers in a thyrsoid panicle, which is shorter 

 than the leaves; "drupe red, hairy, putamen lenticular and smooth." Rocky 

 ledges on east side of Santa Rita Mountain, Arizona, at 5,700 feet altitude. 

 (645.) Resembling in all respects the specimens obtained by the Mexican 

 Boundary Survey, save that in the Boundary specimens there are 7-9 

 leaflets. 



Rhus glabra, L. — Chiricahua Agency, Arizona, at an altitude of 5,310 

 feet. (533.) Utah. 



Rhus aromatica, Ait., var. trilobata, Gray. {Rhus trilobata, Nutt.) — 

 (203.) Willow Spring, Ariz. Utah. 



Rhus integrifolia, Benth. & Hook. (Styphonia, Nutt.)— A. small, 

 much branching tree, with oval, obtuse, entire leaves, which are 1' or more 

 long, petioles 4" long ; sepals and petals reddish ; hairy drupes the size of 

 a pea. Arizona. I have not seen specimens. 



Rhus Toxicodendron, L.— Willow Spring, Ariz., at 7,195 feet alti- 

 tude. (254.) 



LEGUMINOS^. 



By Sereno Watson. 



Suborder I. PAPILIONACEiE. Flowers irregular, perfect. Perigynous disk lining 

 the bottom of the campauulate or tubular 5-cleft or toothed calyx and bear- 

 ing the petals and stamens. Petals 5 (rarely fewer), imbricated, the upper 

 one larger and exterior. Stamens 10 (rarely 5), diadelphous (9 aud 1), or 

 inonadelphous, or rarely distinct. Seeds without albumen. Eadicle iuflexed. 

 Leaves simple or simply compound. 



I. Stamens distinct. 



* Leaves digitately 3-foliolate ; stipules conspicuous : pod flat, 2-valved. 



Thermopsis. Perennial herb. Flowers yellow, racemose. Pod linear, 

 straight, several-seeded. 



