4^4 COMruSlT.E. Muluiulhru: 



• 

 long. InvoUicro biirely 4 lines high. Thu cousiucuoiia inuiiy-toolhed crown to the akeiic ia hero 

 oviJontly i)ai)i)us, umi of Iho suries to which tho stout bristle belongs. 



M. FKNDi.iiai, Oray, PI. Wright,, of New Mexico, is known by its rather large heads, and 

 dark-colored cylindical and enually 15-ribbed akenes, with the cup-like upex entire, and a sinylo 

 iicrsistent bristle ; in asjicct it resembles M. Torrcyi. 



+-I- +->■ All the bristles of the. pappus deciduous in a riiuj : the border of the akene naked 

 or increli/ denticulate. 



6. M. obtusa, Beuth. A span to a foot or more in height, ghiLruus, except 

 some woollineab wlieu young : stems h>osely paniculutely branched, scape-like or 

 few-leaveel below : leaves runcinate-pinnatilid, their lobes and teeth obtuse and 

 rounded : heails small : involucre n.irrow-campanulate (3 or 4 lines long, contain- 

 ing ratlier numerous or sometimes lew llowers) : akenes obovate-oblong, obtusely 

 Jingled by the 5 stronger ribs, the small intermediate ribs either obscure or evident, 

 tiie slightly narrowed apex with a narrow entire border. — M. obtusa &■ M. parvi- 

 Jlora, IJenth. 1*1. llartw. 3lil, the latter apparently no more than a slender and 

 small-Uowered form. 



Open ground, rather common from Monterey to Humboldt Co., and Sierra Valley. In this 

 species the capillary bristles of the receptacle are often manifest, and alwut twice the length of the 

 akenes, but fragile or ilcf.iduous ; sumetimes only traces of them are to lie found. 



7. M. sonchoides, Torr. & (!iay. A sjian high, dilliisely sprcMuling, nearly 

 glabrous, sltuiter ; radical leaves runcinate-i)inuaUlid with tt^eth or lobes somewhat 

 spiniiloso-i)ointetl : heads larger : akenes linear-prismatic, live of the 15 ribs being 

 stronger than the rest; the summit hardly contracted, bearing a crown-like minutely 

 15-denticulate white boi'der. — M. obtusa, Eaton, Bot. King Exp. 202, in part. 

 Leptoseris sonchoides, IS'utt. in Trans. Am. Phil. Soc. n. ser. vii. 438. 



N. W. Nevada, Lemmon, 1875. Utah to Nebraska. The most eastern species; but now de- 

 tected so near to California that it probably will be found within it. 



* * Perennials or sometimes probably biennials, with a firm or somewhat wood;/ 



base: no outer pappus of bristles. (Malacomeris &. Leuroseris, Nutt.) 



+- Flowers yellow : plant white-woolly. 



8. M. incaiia, Ton: & Gray. Low, white with cottony wool : leaves mostly 

 crovviled on a (biennial '{) crown or on short stout .stems, pinnatilid : llowering stems 

 scape-like, a few inches high, bearing one or two rather large heads. — Malacomeris 

 incana, Nutt. 1 c. 



San Diego, on an island in the bay. Collected only by Nuttall, whoso specimens are 

 imperfect. 



4- +- Flowers white {chanyinf/ to rose-color ?) : stems leafy, paniculately branched, a 

 foot or two hi<jh, apparently from a j^trennial root. 



9. M. saxatilis, Torr. Sc Gray. Minutely and lightly tomentose, or nearly 

 glabrous : leaves lanceolate or tlie lower somewhat spatulate, or those of the branches 

 liiuiar, entire, laciniate-toothed, or sparingly pinnatilid : involucre campaimlatc; or 

 hemispherical, about half an inch high ; the short calyculate scales numerous and 

 passing into loose subulate bracts: akenes linear-oblojig, lO-ribbed, crowned willi 

 an obvious 10-denticulate border. — Gmy, 1. c. M. saxatilis & M. commutata, Tcur. 

 & Gray. Lencoseris saxatilis ^^ L. Callfornica, Nutt. 1. c. Ilieracinni l Califor- 

 nicuin, DC. Senecio flocciferus, DC. 



On the coast at Santa Barbara and southward. Seems to pass into the next, unless the akenes 

 fm'nlsh a character. 



10. M. tenuifolia, Torr. & Gray. Glabrous or nearly so, with slender panicu- 

 late peduncles: leaves narrowly linear or the upper filiform, mostly pinnately parted 

 into few divisions : akenes obovate and with an obscure nearly entire border. -- 

 Lencoseris tenuifolia, Nutt. 1. c! 



