[7] 



142 



natives estajiat. It is a celebrated remedy for cholera, as noticed 

 by Colonel Emory in his report. 



Dieteria incana, Torr. and Gr .1 Diplopappus incomes, Lindl.l 

 On the Gila. Differs from Douglas's Californian plant in its slen- 

 der stem, and nearly glabrous, spinulose dentate leaves. 



D. coronopifolia, Nutt. Valley of the Del Norte, and the head 

 waters of the Canadian. 



D. asteroides, n. s p . Minutely scabrous, pubescent, stem pani- 

 culately branched above; leaves oblong-cuneate, somewhat rigid, 

 sharply and rather coarsely toothed, involucre hemispherical; 

 scales linear, in several series, with rather short herbaceous squar- 

 rose tips; rays 30 or more, violet; achenia sparingly pubescent. 

 Pappus of the ray much shorter than that of the disk. Elevated 

 land between the D-:l Norte and the waters of the Gila. A well 

 marked species, with leaves broader than in any other plant of the 

 genus. 



Aster hebecladus, DC. Valley of the Del Norte, and desert be- 

 tween the Colorado and Cordilleras of California. 



A. (Tripolium.) A branching species, with the stems pubes- 

 cent above, and middle sized flowers with purple rays. It seems 

 to be undescribed. Valley of the Del Norte. 

 Solidago elongata, Nutt. Valley of the Gila. 

 Linosyris graveolens, Torr. and Gr. Chrysocoma dracunculoides, 

 Pursh. A shrub about two feet high, and bright yellow heads of 

 flowers. Abundant on the highlands between the Del Norte and 

 the Gila. 



Aplopappus spinulosus, DC. On Ocate 1 creek, &c: called Pinette 

 by the natives. 



A. Menziesii, Torr. and Gr. (3. dentatus: leaves coriaceous, 

 strongly dentate or pinnatifid, toothed, glutinous. Abundant in 

 the great desert between the Colorado and the Cordilleras of Cali- 

 fornia. Another form of this species was found near St. Diego, 

 with the stem and the leaves clothed with a copious loose pubes- 

 cence, and the serratures of the leaves few and small. 



Grindelia. An apparently new species of this genus was found 

 in ascending the Cordilleras of California, but the flowers had 

 fallen from the heads, and our specimen is therefore scarcely suffi- 

 cient for determination. The stem is very smooth and whitish; the 

 leaves are oblong, clasping at the base, spinulose, serrate and glab- 

 rous, and the scales of the involucre are very acute, but scarcely 

 recurved. 



Chrysopsis canescens, Torr. and Gr. Near Ocate creek. 

 C. echoides, Benth. in Bot. Sulph. p. 25. Valley of the Gila. 

 Perityle, Benth. in Bot. Sulph. A new species of this genus 

 (P. Emoryij nob.) was found in ascending the Cordilleras of Cali- 

 fornia. It differs from P. Californica of Bentham in its smaller 

 and much more deeply lobed leaves, narrower achenia, which are 

 very hairy on the margins, and in other characters. 



Baccharis Douglasii, DC. Valley of the Gila. Besides this 

 there are three other species of Baccharis in the collection, none 



