142. ' Ex. Doc. No. 41. 



sharply and rather coarsely toothed, involucre hemispherical, 

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



rose 



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

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

 land between the Del Norte and the waters of the Gila. A well 

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



^Xter 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 pubescent 

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

 undescribed. Valley cf the Del Norte. 



Solidago elongata, JSTutf. Valley of the Gila. ^ 

 Xinosyris graveolens, Torr. and Gr. Chrysocoma dracunculoi- 

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

 of flowers. Abundant on the highlands between the Del Norte and 



^^Aplopapus spinulosus, DC. On Ocate creek, &c., called Pinette 



bv the natives. , . ^^„. 



^A. Menziesii, Torr. and Gr. P. dentatus, leaves coriaceous, 

 stron-ly dentate or pinnatifid, toothed, glutinous. Abundant in tne 

 great desert between the Colorado and the Cordilleras of Calitor- 

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

 the stem and their leaves clothed with a copius loose pubescence, 

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



Grindelia. 'An apparently new species of this gen^s^^^" *Tj 

 in ascending the Cordilleras of California, but the flowers bad 

 fallen from the heads, and one specimen is therefore scarcely sum 

 cient for determination. The stem is very smooth and ^hitisH: lu 

 leaves are oblong, clasping at the base, spmulose, serrate and g J 

 lous, and the scales of the involucre are very acute, but scarce ; 



^^Chrysopsis canescens, Torr. and Gr. Near Ocate creek: ■ 

 echioides, Benth. in BoL Sulph. p. 25. Valley of the Gila. 



Perityle, Benth. in Bot. Sulph. A new species of ^bis g^ _ 

 (P. Emoryi, noh.) was found in ascending the Cordil eras ot v^ 

 ■ krnia l' 'differi from P. Californica of Bentham in its mailer 

 and much more deeply lobed leaves, narrower achenia wnicu 



verv hairy on the margins, and in other characters. ,. 



BWaHs Douglasii, DC. Valley of the Gila. ^Besides this 

 there are three other species of Baccharis m the collection, 

 of which are described in the Flora of North America, but we 

 not yet pronounce them new. , . u 



Tessaria borealis, DC. An aromatic shrub about three feet Di»^ 



trrowing in all the deserted beds of the Gila, and in the \aliej 

 the Del Norte; usually with the Fremontia, both of which are 

 abundant in those regions. ^^ 



Hymenoclea, Torr. and Gr. ined. This remarkable ^^^ ^^^gal- 

 allied to ambrosia and xanthium. Another epecies of it (^- ^^^ 

 ^nla^ was found in Fremont's second expedition, which, witn 



which it belc.ngs, will be publisliea »«» 



charact 



\ 



