PLANTS COLLECTED BY DE. GAMBEL. 173 



Hab. Rocky Mountains, near Upper California. Flowering in October and 

 November. 



GNAPHALIUM. 



G. *RAAiosissiiviuM. Stem tall and stout, very much branched, the branches fastigiate ; leaves and stem 

 green but pubescent, the former linear-lanceolate, acuminate, strongly decurrent, viscidly pubescent ; 

 heads mostly pedunculate in scattered corymbs ; scales of the yellowish-white involucrum, oblong- 

 lanceolate, subacute, longer than the florets: achenia smooth. 



A large plant, live or six feet high. Leaves somewhat like those of G. decwrens, 

 but green on both surfaces ; the upper leaves and branchlets tomentose, but not 

 canescent; the capituli campanulate, distinctly pedicellate, or with two heads 

 approaching each other on shortish stalks. The whole plant exhales the strong 

 peculiar odour of G. decurrens. 



Hab. Monterey. California. Flowering in September and October. 



HELENIUM. 



H. PUBERULUM. (Decand.) Florets of the disk mostly five-toothed, pedicels very 

 long and divaricate. Rays mostly three-cleft. Heads spherical and large. 



Hab. St. Simeon, Upper California. 



STEPHANOMERIA. 



S. *ELATA. Stems stout, erect, grooved and attenuated upwards ; leaves almost filiformly linear, the lowest 

 somewhat pinnatifid, the upper laciniately toothed at the embracing base ; flowers in a small terminal 

 panicle, (blue,) florets about ten ; achenia cylindric-oblong, five-grooved, somewhat rugose. 



Plant (probably perennial) three to four feet high, the stem perfectly simple, to the 

 commencement of the flower branches, each of these bear three to four flowers, 

 apparently blue. Involucrum and branchlets sprinkled with resinous dots. 

 Involucrum ovoid and caliculate, of six to eight leaflets in a single series. Florets 

 deeply five-toothed, style and stigmas somewhat hispid. Achenia pale brown, 

 oblong-cylindric, obtuse, with five, obtuse, rather rugulose ribs ; rays of the pappus 

 about fifteen to twenty, white, plumose hairs, rather naked toward their base. 



Hab. Santa Barbara, Upper California. 



PTILOMERIS. 



P. *TENELLA. Pappus of eight to ten, cuneiform, obtuse fringed scales, in the rays minute ; involucrum 

 campanulate, about eight-leaved ; scales ovate, somewhat obtuse ; leaves mostly opposite, pinnatifid, 

 the divisions few, narrow linear. 



