342 COMPOSITiE. Gnaphaliam. 



slightly decurrent : heads in numerous small clusters terminating the paniculate 

 branches : involucre cylindraceous becoming narrowly campanulate ; the scales 

 dull white, obtuse or acutisii. — Nutt. in Trans. Am. Phil. Soc. n. ser. vii. 404 ; 

 Gray, PI. Wright., &c. 



Above the Yosemito Valley (Dolander), and Siena Valley (Lemmon) ; perhaps also near l^ay of 

 Saa Francisco. Also in ()iej,'on, Nevada, and cjvst to New Mexico. Heads 2 or 3 lines long. 



4. Gr. ramosissimum, Nult. Viscid-glandular, green, lightly woolly : stems 3 

 to 6 feet higli : leavea linear-lanceolate, acute, conspicuously decurrent : heads very 

 numerous and either separate or clustered on the loosely paniculate branches : invo- 

 lucre somewhat turl)inate ; the scales dull white and often tinged with rose-color, 

 acutish. — PI. Gamb. 17.'} ; Gray in P)ot. Wilkes Exp. 3G3. 



Hay of San Francisco to Monterey. Heads not lari,'er than those of the foregoing species. The 

 wlor anil the glamliiiur heiliage aa in </. ilirurrciui, 



* * Heads small, inconspicuous, in sessile lateral and terminal caj/Uate looolly clus- 

 ters, subtended by leaves : involucre of rather few and sordid or brownish scales : 

 stems low and ivtak or diffuse, from an annual root. 



5. Gr. palustre, Nutt, Loosely very woolly, an inch to a span high, mostly 

 erect and branching mainly from thebaso : leaves spatulate verging to lanceolate or 

 linear : heads 2 lines long : scales of the involucre linear, obtuse, pale brown with 

 whitish tips. — G. palustre & G. (/ussi/pinum, Nutt. in Trans. Am. Phil. Soc. 1. c. 



Common in moist grounds through the I'aiiific States, and eastward to and beyond the Rocky 

 Mountains. 



G. ULiGiNosuM, Linn., the common little Cudweed of the Eastern States and the Old World, 

 has been credited to (.'alifornia, but probably by mistaking small forms of the foregoing, iVoni 

 which it may be distinguishwl by its more ditiuse growth, heads only a line long, and propoi lion- 

 ally broader scales of the involucre, of a chestnut-brown color. 



§ 2. Bristles of the pappus united at base into a ring : heads in axillary sessile 

 clusters or sjyicate-cjlomerate : involucre as in the preceding subdivisio7i (of 

 brownish and not very numerous scales). — (iAMOCHiKTA. (Gamocha'ta, Wed- 

 dcll.) 



6. Gr. purpureum, Linn. A span to a foot or more high, ascending from an an- 

 nual or more emluring root, coated with appressed white wool: lower leaves spatulate, 

 their upper surface often becoming naked and green ; upper leaves mostly spatulate- 

 linear, gradually dinunishod to luiicts of the glomerato-spicato inllorescence, the 

 lower small clusters of which are commonly rather distant : involucre tawny or 

 brownish tinged with ijurplish. 



Pacific shore, from ("ohinibia Hivcr to Santa Barbara (and again in Chili, &c.), agreeing with 

 the plant of the Atlantic const. <}. uslulatum, Nutt. 1. c, from Santa Barbara, is probably the 

 same, perhaps of the more southern G. spicatum form. 



TiiiBE V. IIELIANTIIOIDE^. 



Distinguished from Asteroidece chiefly by the chaff on the receptacle, at least next 

 the margin, and subtending fertile flowers, pappus never capillary or of numerous 

 bristles, and the leaves all or most of them opposite ; the corollas commonly yellow ; 

 the branches of the st'ylo often truncate or tipped with a cone or cusp : from lleleni- 

 oidece known by the chaff of the receptacle, &c. 



The first subtribe (Ambrosieoe, which might as well be regarded as a tribe) is most peculiar in 

 the Artemisia-like habit, and the few or solitary fertile flowers, with corolla wanting or leduced 

 to a short tube, and leaves not rarely alternate. 



The whole tribe is much more copio\isly represented in the Atlantic States than in California. 



