338 PHANEROGAMOUS PLANTS. 



2. Lessingia ramulosa, Sp. Nov. 



L. dense lanata, demum subnuda, pumila ; ramis e basi brevi validis 

 erectis gracilibus mono—oligoceplialis; foliis radicalibus petiolatis lanceo- 

 lato-spatludatis parce dentatis, caidinis ovatis oblongis vel sublinearibus 

 sessilibus integer -rimis, ramealibus minimis ovato-oblongis vel subsagit- 

 tatis ; capitulis pedunculatis ; involucro obconico 10 -20 -flor o, sqnam is 

 apice virentibus vix aut ne vix squarrosis ; corollis margin cdibns fere 

 regulariter quinquefidis ; styli ramis appendice brevi seti/ormi intra 

 penicillum abscondita cuspidatis. 



Lessingia ramulosa, Gray in Benth. PL Hartw. p. 314. 



Hab. San Eafael, California. Also collected by Hartweg, near 

 Sonora, in the same district, — In the specimens of the Expedition, as 

 well as in those of Hartweg, the summit of the primary stem has 

 perished early, and has been succeeded by lateral branches from the 

 persistent base. The root is that of a biennial or winter-annual. The 

 heads are rather larger than those of the foregoing species ; the invo- 

 lucre narrower and scarcely at all squarrose; and the difference 

 between the corollas of the marginal and central flowers, if any, is less 

 marked. The appendage to the branches of the style, which is obsolete 

 or wanting in L. Germanorum, is here evident, although hidden in the 

 centre of the penicillate tuft. The near affinity of this species with 

 L. Qermanorum is evident ; and it carries with it the two following 

 species. [Corollas probably white.] 



3. Lessingia nana, Sp. Nov. (Tab. 7, B.) 



L. pygmma, undique lanosissima; caulibus ramisve conglobato-confertis ; 

 foliis integerrimis, radicalibus spathidatis oblongisve petiolatis, caidinis 

 lanceolatis seu linearibus rigidis cuspidatis sessilibus ; capitulis majus- 

 culis intra folia caidina arete sessilibus; involucro 10-15-floro cylin- 

 draceo, squamis appressis coriaceo-cliartaceis lanceolatis cuspidatis, 

 extimis subherbaceis, intimis albo-hyalinis in acumen gracile spinescens 

 discum subsuperans productis; corollis fere aqualibus regulariter 

 6-fidis; styli ramis apice breviier penicillatis exappendiculatis. 



Lessingia nana, Gray in Benth. PI. Hartw. p. 315. 



