APPENDIX. 
479 
23. E. LoBBii. T. & G. Leaves subroixudotl ; umbel somewhat compountl, dense ; bracts obovate or 
lanceolate ; calyx glabrous. See page 300. 
^ 5. LACHNOGYNA, T. & Q. Calyx witli the broad base not at all produced, woolly, 6-parted, seg- 
ments oblong and equal ; ovary exceedingly tomentose ; filaments hairy at base ; iuv(ducros few, 
capitate, or in a few subcymose heads, or solitary, short, 3-5-toothed. — Hoary < ;espitosc p(>ri'unials ; 
leaves narrow, very crowded ; scape naked or almost none ; flowers small, yellow. 
24. E. ACAULE, Nutt. Matted ccespitose, nearly scapeless ; iuvoliicres 1-5, subsessile ; leaves linear- 
oliloiij;-, Kt's.sile. See page 300. 
25. E. lachnogynum, Torr. BrfAchcs of the caudcx very short and crowded; scape a spun to P 
liigh, slender; leaves lanceolate or lance-oblong, 1' loug, acute, petioled, more or less revolutely niiugincd, 
silky above, tomentose beneath ; calyx silky-woolly, yellow witliiu ; embryo strongly ecoeiitric.--S. Culo- 
rado and New Mexico. 
^ 6. JIETEROSEPALA, T. & G. As in all the remaining sections, the llower Avitli the usually broad 
base not at all produced, the ovary glabrous or nearly so, the embryo incurved, and the ascending 
radicle much exceeding the usually rounded accumbcut cotyledons ; involncros capitat(5 or um))el- 
late-cymose on a simple Uiikcd scape, 5-8-toothed ; calyx glabrous, petaloid, (i-jiarteil, the outer 
segments enlarged and rounded, -.A length cordate and auricled at base, llio iuiirr narrow, spatti- 
late, emarginate ami connivcnt , e;u li w'uli :'. slainens on the elawlike base ; lihuuents villons at 
base. Ca'spitose-acaulesceut whitr-wooUy ji: rcnnials ; 1( avi s o\ al or ronndi'il, petioled, crowded ; 
bracts very small. 
2C. E. PROLIFERUM, T. & G. ITmbel proliferous-eoniiionna, with tlir < cnlral in volncrfs scssilr : ontcr 
segments of the rose-colored calyx biM-oming bnt slightly eordale at l)asi'.— Idalio and Washington 
Territory. 
27. E. OVALiroLlUM, Nutt. Involucres tV'W in simple heads; outer calyi im si -im iils usually drrply 
cordate at base. See page 301, 
^ 7. CAPITATA, T. & G. luvolucres sessile, capitate; the usually nalx. d glolx.s.- \\v:\,\< solitary or 
subumbellate upon a naked simple peduncle; calyx mostly glahrons, Ihi' segments similar. White- 
woolly perennials. 
* Low, cffispitose, acaulescont ; head solitary : in volurrcs few, r)-7-tooth<'d ; liowers not very numer- 
ous ; bractlets slightly barbellate. 
28. E. KiNGii, T. & G. Loosely woolly; leaves spatulalc oi' rounded, or sometimes suUlanc i-..lat e : 
calyx-segments obovate-subcnn(>ate, emarginate. See page 301. 
29. E. MULTiCEPS, Nees. Very white Avith appressed wool ; branches of the eaudex ascending, leaty ; 
leaves oblong-spatulate or oblanceolat.-. long-attenuate at base ; scape 3-5' high ; involucres 5-10, tuhu- 
lar, 5-toothed, shorter than some of Vnc bracts; calyx white or yellowish, somewhat wo.dly, hd.rs oho- 
vate-cuueate, refuse.— S. Wyoming. 
30. E. TAUCIIXORUM, Pursh. Becoming glabrous; branches of the caiubx very shori and erowdi^d ; 
leaves linear or subspatrrlate, revolute-margincd : inv<dn,-res 5-10. tnrhinate-campanuhite, 5-loolhe.!: 
calyx white, glabrous, lobes oval ; filaments pubescent below.— Xi'hraska : C.lorado. 
* * Taller subacaulescent ; heads solitary or few and umbeled upon the sion! naked i-eduuele; in- 
volucres' short-campanulate, truncat.', very many-ilow.red, the 5-s teeth united l.y a n.eud.rane : 
calyx white, glabrous, lobes broad ; braetletr- very villous-idumox-. at leugih ex.erl. d. 
31 E. LVTIFOLIUM, Sm. 1-2- high, the webby w..ol nion- nr less d.Tiduons ; leaves 1-2' h.ng. oval, 
base broad ami rounded or cordate; involueres .5-12, w...dly, 5-toothed. the head sometimes 1 broad: 
ca]vx-lo])es broad-ovate.— Coast of California. ,, , 
■3-> E oiiL()XGtf.>L.UM,15enth. More slender. 1-1 high; heaves oblong and oval, ba^e usually aeute ; 
involucres glabvate,G-y-to..;hed; ealyx-segments oblon--obovale.-( oa^i ot Cahioruia. 
$ 8. CAP1T1:LLATA, T. a O. Involucres trnn< ate. subdentale, many-tlowei ed. " ^ ■ ■ 
• twos in small h.-ads upon a tall naked sometiin.'s ii.tulous seape, those in th.- i 
0-i,arted, the nearlv e.,ual lobes ..bova i e-oblong : brad lets idunn.se. A.au;.^. r - ■' - 
seape and involuer.; glabrate or glabrous : leaves broad, usually undulate : (lowers u \nU . 
•!■! r xt-i.rM Don.] Leaves InKUV-tonumtose beneath, ovate or .d.ovate. usually .ubeordafe a. 
base and"lonu-petioled;^,auieie dichotoumus .ith 1 b..neh(s; involueres ey hndue-ea.Hpaunla..-. 
6-8-toothed. those in the t\.rks sessile.-\'ery variab], and (.alitorma. 
34. K. tXA-n-M, Uougl. Le.ivesviiiuus-pube.ee., ; . ■ , - r. UMiallv a W • . • • .U^l-a-e. ,u.olae,e> 
more top-shaped, 5-toothed, pedicelled in the forhs, the re.st sub-lomei ate. 
$ 9. FASCICULATA, Centh, Involucre, truncate. suWentate, .cry n,.u., a .-avd, in small bracte- 
