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ANALYTIC KEY 93 
nately serrate; sinus very large and broad; axiles long, lanceolate, subentire ; 
inflorescence proliferously overtopped; rays long, narrow, usually 10-12 
SunpivisioN C. BRACTS rounded, short and iiid scale- anie all alike. 
29. A. CHLOROLEPIS: /eaves large, resembling A. tenebrosus, but with sharp, deep 
sinus; rays en ; bracts with little hair; bracteals AE serrate ; disk 
verging to deep 
Division D. CLAYTONIAN 1 egve firmer Jes nega 
when dry, chiefly ovate-acumin large, nor very narro 
very long ; petioles oa not ada ae mec * Disks high, vir 
fragrant of bee-bread, golden-yellow, soon Peer a warm rich brown. 
Petioles short, not rapidly ping below 
SUBDIVISION A . BRACTS narro alee: leaves chiefly smooth in life ; 
s cord-like beneath, ie 
30. A. vmi. Se ovate-incurved, short-acuminate, coarse-serrate, with broad 
strong sinus ; axiles CPE IAT h triangular-acute ; bracts oO a lower- 
most acutish, the rest nearly alike, tapered slightly to an obtusis ; rays 
short, chiefly 8; disks iij sienna ; inflorescence with strong cii stem, 
not quickly a ice in typical 4. "aha n when pressed pinnate, 
with lony-stalke nvex, umbellulate cymu 
307. Branchy-base Eos: a i branched from th sexa ; heads large. 
30%. Brush-top form: profusely upwardly branched above ; S small. 
309. Bright-eye form : small dissolved inflorescence; disk glowing 
30V. Brown-top form: bushy- bun qu ; chief leaves taper- vim brownish, oblong or 
spatulate ; heads many, s 
30H. Catskill form : cinereous, high- none dense-topped. 
30”. Cliff-clinging form : clusters dense, remote, making an ovoid-oblong outline. 
Rh Flagelliform form : heads subsessile and dense on long swaying branches 
305. Rock-cleft form: very dark green; leaf-bases broad 
30". Verticillate form: much-branched inflorescence, with many nodes bearing 2 or 
= 
even 3 leaves. 
30b. A. CLAYTONI CRISPICANS : leaves ovate-incurved, caudate; teeth close, smaller, 
acuminate, crispicant (alternately elevated and depressed); axiles subpetiolate 
more of the utish 
SuBDivisioN B. BRACTS lingual (except 34); leaves thicker, rougher ; 
or subsucculent (32, 33); veins a involucre very small and 
narrow ; plants less massed in loo 
31. A. EBENEUS : Zeaves oblong-acute to ovate- us thicker, rougher, lee tuli cete 
ark-green; stem deep-red or black if in the sun; heads small, profuse 
branches very numerous, rather short ; sinus a broad brace, or in lowest eps 
narrow ; disks soon : 
32. A. MOLLESCENS : “eaves ovate, subsucculent, little serrate, pale-green ; stem pale; 
heads small and crowded, from many axiles; sinus shallow ; disks pale-yellow, 
finally pale-brown ; bracts narrow-lingual. 
325. Papin form : many upper leaves broad-reniform. 
33- DENS: /eaves triangular-ovate, acuminate, sharp-dentate ; stem red, smooth, 
itining rigid and brittle, paniculately decompound ; bracts pale, broad-lingual, 
3 disks t becoming a glowing reddish-brown or soon crimson, 
Kt fuu los 
33*. Broad-bush form : iin xuriant, flaccid ; rough when dry. 
