124 COMPOSITE. 



C. pilosa, NrTT. A foot or two high, branching: brauehlots terminated by solitary middle- 

 si/.ed brails: pubescence soft hirsute or villous, also a minute glanduloMty : leaves oblong- 

 lanceolate, occasionally denticulate or toothed ; tin- lower soim-tinies incised: bracts of tbe 

 involucre acuminate, glandular-viscid: rays almost half-inch long. .lour. Ac-ad. Phikul. 

 vii. ('.('., . Trans. Am. 1'liil. Soc. 1. c. ( I'lii/llofm/i/nis) : Torr. & Cray, 1. c., Aclii/rnn. 

 < ijicii pino and oak woods. N. \\". Arkansas, W. Louisiana, and Texas, tirst coll. by A''/////. 



>. AMMODIA, Gray. Ra\snone: outer pappus slender-setulose, inconspicu- 

 ous or oli-cure: somewhat viscid and pubescent perennials, with bracts of the 

 involucre thinner and more searions. - - Proe. Am. Aead. vi. '>[:>. Amnintlla, 

 Nutt. Trans. Am. Phil. Soc. n. ser. vii. ',\~1\. 



C. Oregana, (iu-vv. A foot or two high, pan iculately branched : loaves oblong or laneeo- 

 laic. sometimes hirsuu or almost hispid: miiirili conspicuous: involucre nearly equalling 

 tin- flowers; iis bracts pluriseriate : corollas slender: akones- oblong. Proc. Am. Acad. 

 1. c. \ Hot. Cali!'. i. :in:i. Ainnwili<i On,,,,,:,!, Nutt. 1. c.; Torr. I'.ot. \\ ilkes K\]>ed. t. n. A. 

 l-ii, /,-,// in Cttmingii, Klatt, in Abb. Nat. (Resells. Halle, xv. ">. Sandy or gravelly hanks of 

 streams, Oregon and WT. California. 



Var. SCaberrima. Leaves (of In-ancbes) small, tbe'se and tbe brancbes very hispid 

 scabrous. 1 >ry creek, Tulare (_'o., California, <'i>.i</ilo>t. 



C. Breweri, (!i:.\v, 1. c. A foot or m<>re biuli. more slender, less pnlioscout or almost gla- 

 brous: leaves sborter, ovate-lanccolalc or lanceolate, :>-ner\ed at base (an inch or I wo long): 

 bi-ads naked-pedunculate: involucre shorter; its bracts feuer ranked and somewhat broader: 

 corollas fn nin'l form : akencs ohovate. California, in the Sierra Nevada, from 4,500 to 

 ll.Oilo feet, in open woods, tirst coll. by lln n; r. 



23. ACAMPTOPAPPUS, (Iray. ("A/ca/iTTTo?, unbrndinjr or stiff, and 

 TTUTT-O?, pappus.) -- Low shrnhs. of the Ari/ona-Nevadan desert region, a foot to 

 a yard liiidi. e-lahrons or olisenrely pnbendotis, not glandular nor resinous : leaves 

 small, entire, ses-ile, nearly veinless except midril). lower spatnlat(\ upper linear- 

 ohlono- to linear: heads terminating' ]'< Innculil'orin branchlets, yellow-flowered. 

 -Pror. Am. Acad. viii. C.:M, xvii. 208. 



A. SpllEerOCephaluS, * ii: \v, 1. c. r.ranches striate, corymbos. ly jiolvccphalous : heads 

 discoid, homogamous, depressed-globular. 4 or 5 lini>s high : bracts of invobiv're whitish. 

 outer ones cominonly with a pale greenish spot. Aplopappus [Acamptopappus] sphcero- 

 cefthtiuis, (Jray. 1M. I-'endl. 7T. ; Torr. in I'acif. 1\. Hep. vii. t. 6. Ari/.ona and S. I'tah to 

 the Mohave desert in California, tirst coll. 1>\ Coulter. 



A. Sliockleyi, (li:^. I'ranchlets simjiler, monocephalous : bead heinispherical, radiate: 

 rays 10 to L 2, elongated, linear-oblong, bright yellow : outer bracts of involucre more con- 

 spicuously green 011 the back. 1'roc. Am. Acad. xvii. '20S. Mountains of S. \V. Ne\ada, 

 at Candelaria, l-'-smeralda Co , II". >". >'/,. )-/.-/. t/. 



29. XANTHfSMA, DC. (H,,'r^,r /t o, dyed yellow, alluding to the bright 

 yellow llouers of the showy head.) Prodr. v. ( ,>4 : P>enth. Jc Hook. (len. 

 ii. _'."."). <', itlnnridiiiin, Torr. i\c (iray. Fl. ii. 24(>. Single species, near to 

 Aplo])<t]>pns, showy in rnltivation. . 



X. Texaiium, IK". 1. c. Nearly glabrous, biennial or annual. 1 to 4 feet high, with virn'ate 

 branches terminated mostly by solitary large heads: leaves from narrowly oblong to lanceo- 

 late : radical and lower cauline not rarely laciniate-pinnatirid and even bipinnately parted; 

 caubne sessile, sparsely serrate or denticulate, or the upper entire, outer bracts of the 

 involucre commonly narrowed below the green body or appendage; this whitish-margined, 

 and sometimes with rounded barely nuicronate summit, oftener either gradually or abruptly 

 acuminate and cuspidate : rays about 20, an inch or less long, the ligule borne on a very 

 short tube, and the style short. (Jrav, PI. Wright, i. OS (var. Berlandien, with rounded 

 obtuse iuvolucral bracts, and var. Itrummondii, with pointed ones) ; Torr. Bot. Marey Kep. 



