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CAPPARIDACE. 
Polanisia graveolens, Raf. In flower and fruit; September 26— 
“October 3, valley of the Del Norte. . The plant is taller, and the 
‘flowers are considerably larger than in the form that is common in 
_the northern United States. 
Cleome integrifolia, Wutt. This beautiful species is abundant on 
both sides of the mountains, from the plains of Oregon, and the 
upper waters of the Platte, to latitude 33° north. 
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VIOLACEZ. 
Viola cucullata, Linn. Pawnee fork of the Arkansas. 
PORTULACACE. 
Portulaca oleracea, Linn. On the Arkansas.’ Perhaps intro- 
40 -duced. = 
_ Sesuvium portulacastrum, Linn. In flower and fruit, November 
17. Saline soilsalong the Gila. Leavesspatulate. Flowers nearly 
sessile, stamens numerous. Styles 3. 
GERANIACE. 
Geranium Frémontii, Torr. in Frém. 2d Rep. On the Raton. 
ZYGOPHYLLACER. | 
8 
Kallstremia maxima, Torr. and Gr. Tribulus maximus, Linn. 
“Tributaries of the Canadian. 
_- — Larrea Mexicana, Moricand, pl. nov. t. 48. “Creosote plant.”’ Io- 
| -deodondo of the New Mexicans. Used externally for rheumatism. 
A shrub from three to six feet high. Abundant from the upper 
‘waters of the Arkansas and valley of the Del Norte, to the great 
_ sandy deserts of California. It likewise occurs in the northern 
-, ‘parts of Mexico. The plent abounds in a strong smelling resinous 
matter. No animal seems to feed on it, and it is useless for fuel, 
as it can scarcely be made to burn. 
ANACARDIACES. 
' + Rhus glabra, Linn. From the upper part of the Arkansas to 
ee + ? 
| dongitude 107°. “s ae 
~~ Relaurina,, Nutt. A large shrub. Mountains of California, 
| towards the sea coast. Man rag 
R. trilobata, Wutt. On the Gila. A shrub 18 inches high, found 
late in the autumn, with staminate aments nearly matured for the 
following spring. The whole plant is clothed witha dense velvety 
pubescence. It is, perhaps, a distinct species from R. ‘trilobata. | 
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MALVACE. eas 
Munroana, Dougl.. igh sandy plains, and in the yaile 
lowers bright rose color. : 
