jUnlac.olhvLc. ('OA[?O.SIT.K. ^oo 



First c^llootod by CouUcv, prol.nl.Iv in tlio soutl.crn pnit of tl.o Slnto. Sitmonvos Pnss (AV„> 

 t'-'n-' A-v'rT?; Hiver and San Lnis OMspo, 77r..r,-. Apparently on tl,.> S.rran.onto or San 

 Joaquin /i<c/i, Kellogg Involucre over l.alC un inrh in dianiftcr, not unlike tl.at of a Xcranllu- 

 mum. Structure m other respects wholly that of Malacothrix. 



§ 2. Involucre of narrow and acute or acuminate scales, slightl;/ if at all scarious, in 



2 or 'i series. (Pappus present.) — Malacothrix pro])er. 



* Annuals: fioivers light yellow, often turning purple. (Leptoseris, Nutt.) 



+- Head large, solifari/, terminating mostly simple naked scapes. 



2. M. Californica, DC. Loosely long-woolly whoii young, sometiintvs nearly 



glabrous M'lth age : leaves mostly all in a radical tuft, laciniately i)innately parted 



into very narrowly linear divisions : scapes ascending, a sjjan to a foot high : scales 



of the broad involucre linear-subulate, loosely imbricated: akenes narrow" minutely 



and obtusely striate-ribbed (aoutish and with a minute callus at the base) : outer 



])ai)pus of 2 persistent bristles, between the bases of which arc several very minute 



pointed tentli. "^ 



Var, glabrata, l-.aton in Dot. King Exp., 201, is a form apparently destitute of 

 wool, even when young. 



Open grounds, rather common from the Bay of San Francisco to San Diego, n>id east to the 

 borders of Nevada and S. Utah, wliere the smooth variety was collected hy Anderson, IFatson 

 Jarrij, &c Head as large as that of a Dandelion, on a scape wliicli is usually naked to the base' 

 rarely with a leaf or two, and with a tendency to bear lateral heads. 



+- +- Heads smaller and paniculate on branching stems or .scapes: involucre of equal 



scales and a feto short calyculate ones at base. 



+-^ Pappus with one or more somewhat persistent stouter and naked bristles. 



3. M. Torreyi, Gray. A span to a foot and a half high, rather leafy, nearly 

 glabrous : branches and e.'^pecially the peduncles more or lo.=!S beset with some gland- 

 tipped bristles : heads rather large : involucre campanulate and many-liowered : 

 akenes linear-oblong, very strongly ribbed ; the 5 principal ribs almost \ving-like, 

 the pair in each interval much less i)rominent : outer jiapims of 4 to 8 (usually b) 

 stout persistent bristles, between the thickish bases of which arc minute teeth. 

 — J'roc. Am. Acad. ix. 213. M. sonchoides, Torr. in Stansbury TJcj). 31)2; Gray, 

 ri. Wright, ii. 105, in part; Katon in Jiot. King Kxj). 201, not "of Torr. Sc (j'ray. 



Eastern side of the Sierra Nevada, on the borders of the State; {Aiiflrr><ov, U'n/snn, T^mmnn) • 

 thence east to Salt Lake and the southern part of Utjih. Involucre sometimes half an inch hich' 

 generally smaller. ° ' 



4. M. Xanti, Gray, 1. c. Slender, glabrous or slightly woolly when young • 

 stem scape-like and loosely panicled, a foot or more higli : Ip.avos mostly radical, 

 runcinate-pinnatifid, thin; the cauline ones small and with aluumt filiform lobes 1 

 heads small : involucre cylindraccous, rather few-flowered : akenes linear-oblon<', 

 obtusely 15-ribbed, with 5 ribs moderately stronger, the cup-liko apex obtusely 6- 

 toothed : outer pappus of 3 to 5 very slender and partly persistent bristles. — 

 M. parmjlora (?), Gray, Proc. Am. Acad. v. 163, not of Benth. 



Cape San Lucas, Lower California {Xnntus). It may occur in the southern part of the State. 



5. M. Cleveland!, Gray. Slender, glabrous : stem mther naked, loosely pan- 

 icled, a foot or more high, bearing numerous heads: leaves thin, all linear, spar- 

 ingly laciniate-pinnatifid : involucre campanulate, mther many-llowered ; the 'scales 

 green with brownish or jiurplish tips : young akenes cylindraceoiis, ecpiably and 

 lightly striatn-nerved : outer i)iippus of one slout bristli' "an<l a crown of many con- 

 spicuous thin and white teeth; soft bristhvs of (he inner pappus disposed to fall 

 separately. — I'roc. Am. Acad. ined. 



Near San Diego, D. Clnrhmd. Also Ouadnlnpe Island, Lower (".ilifoi nin, /);•. /s. Vnlmrr. 

 Leaves a line or two wide, even the radical ones seldom over 2 ..r :5 lines broad, IVoni 1 to 3 inches 



