4^j(j COMi'USlT.E, CVe/^is. 



2. C. acuminata, Nutt. Less tomentose : stum slender, 1 to 3 feet hiyli, 

 beuiing an o\)imi cyme ul" iiumeroua and slonder-ped uncled narrow heads : leaves 

 riincinately pinuutilid into lanceolate or linear lobes below, and the a[)ex prolonged 

 into an entire tail-like acuiuination: involucre 5- 15-llowered, eitlier tonientulose 

 or glabrous, nurrow-cylimlrical, 5 to 7 lines high; the principal scales 5 to H: akencs 

 10-striate, with a tapering aununit. — Torr. in Stansbury Jiep. Iil)2, t. 8 (the akene 

 too tapering at summit). C. ocddentalis, var. gracilis, Eaton in Bot. King Exp. 'lO'i, 

 slender forms. 



Dry ground, from near (^lear Lake {Neivberry, Torrey, &c.) and Yosemite and Siena Valleys 

 (Bolunder, &e.), to Oregon and Iho Rocky Mountains. Akoues generally rather longer tlmn 

 the i)a[)i)U3. 



« * Glabrous or slij/htlt/ hair//: stems or viostlif naked scapes and a crotvu of radical 

 leaves from a solitari/ and titick probably bieit,nial root, beariiKj a few lomj-peduncled 

 heads. 



3. C. glauca, Torr. & Gray. Glabrous, except a slight pubescence on the young 

 heads : leaves all radical, glaucous, oblong or oblauceolate, runcinate-pinnatitid or 

 denticukite, thickish, hardly petioled : heads small: involucre 15 - 20-Ho\vered, of 

 about 12 narrow and cipiul scales and 3 or 4 small accessory ones: akenes oblong, 

 incurved, slightly narnnved at both ends, lU-ribbed, bhorter than the rather scanty 

 • kitiiduous |)appus. — Crc/iidiniu (/laiicmn, Nutt. 1. c. 



I,ow giound.s in nalini; .soil, Western Nevada ( /r((/«(;/i) to the I'latte : not yet lound on the 

 borilers of Calilornia, luit it may be e.x|)ecte(L Involucre 3 to 5 linea long. Akenes only 2 

 lines long. 



4. C. Andersonii, G»ray. Glabrous, or with some woolly pubescence when young : 

 leaves mainly radical, ublong-obovate or lanceolate, laciniately-toothed or rarely run- 

 cinate-pinnatifid, nearly sessile : heads rather large : involucre many-ilowered, mostly 

 glandular-pubescent when young; the scales imbricated in about 3 series, linear- 

 lanceolate or oblong-linear : akenes fusiform, many-striate, smooth, tapering gradu- 

 ally into a short but rather ilistinct beak. — Proc. Am. Acad. vi. 553; Exiton in 

 liot. King Ex[). 203. 



Low grounds, near Carson City {Anderson), and a enuleseent form in uplands (whieh may bo 

 Crcpidiuiii aiuhsvviis, Nutt.). and Sierra Valley {Lciiuiwn) : extending into Nevada, fi'atsoit. 

 Heads half to two thirds of an inch long. Akenes a lines long, including the beak : jiapims 

 rather deciduous. 



CuEPis luiNciNATA, Torr. & Gray, is most like 0. gluuca ; but has a hispidly glandular and 

 pubescent involueie, narrower akenes, and the thinner leaves not glaucous. It belongs to the 

 Uoeky Mountain district, ami probably does not approach California. 



C. Cooi'iCKi, riniy, is the Malacothrix crcpoidcs, Cray in Pacif. U. Rojt. xii. 49, a snudl- flowered 

 si)eeics with the asiieet of Muhtcothriui oUusa, but not the characters ot that genus, it is in L. 

 Hall's collection from near Portland, Oregon, and may perhaps be expectetl m the northern part 

 of California. 



■:^ * * Glabrous or nearly so, dwarf, perennial : heads from the crown avioruj the 

 radical leaves, or on scapes hardly exceeding them. 



5. C. nana, Kichardson. Leaves in a depressed cluster, rather glaucous, (jblong 

 or spattilate and lyrate or lyrately toothed, or Bometimes roundish and smidl, the 

 latiiial divisions being wanting, commonly long-petioled : heads clustered at the 

 crown, or sijveral on a sca[)o or stem an inch or two high : involucre cylindraceous, 

 10 _ 14-tlowered, of G io 8 linear (d)tuse glabrous scales, ami a few «hurt calyculate 

 ones at base : ihiwers yellow turning pink : akenes slender, linear and obscurely 

 fusiform, not beaked, iinely striate. — Hook, in Parry's 2d Voy. 31)7, t. 1 ; Torr. 

 & (Jray, 1. c. 



High Siena Nevada, at Sonora Pass (a single and somewhat ambiguous specimen), Brewer. 

 Also in the northern liocky Mountains, extending to the Arctic coast, an<l in Silieria. The nar- 

 row heads nearly half an inch long. 



