INDEX-KEy 41] 
65. A. ferox: caulines soon small, subentire ; heads pale, diffuse. 
348 
Div. B. IANTHINE MACROPHYLLI. Violet rays turn- 
ing white; glandular hair chiefly not broad-capitate, mostly 
reduced to stubs. 
Subdiv. A. Tall, robust, often 4 ft.; radicals 4 or 5, large, 
often 8 in. long ; glabrate. 
* Inflorescence somewhat deep-branched, rather regular. 
t Violet of the rays often almost blue, but soon white ; 
upper leaves narrow-based. 
66. A. iostemma: char. rad. oblong; cauline ov.-acum., sub- 
crenate. 351 
67. A. gremialis: char. rad. orbic.-cordate; cauline oblg., sub- 
entire. Ja 
i tt Violet and subsequent white of the rays usually less 
: pronounced ; upper leaves broad-based. 
68. A. nobilis: char. rad. cordate-ov., downy ben., cauline lance- 
r oblg. 356 
69. A. ampliatus : lr. lvs. dilated at basal lobes, often dentate. 359 
** Inflor. irregular, deep, narrow, sympodially proliferous. 
70. A. sympodialis : lr. lvs. thick, broadly cordate-ov., crenate. 
361 
Subdiv. B. Plants smaller, often 2 ft.; radicals few, smaller. 
i: *Inflor. flattish ; glabrate; glands minute ; lvs. firm, thinnish. 
: f Inflor. high-branched ; sinus securiform. 
71. A. securiformis : radicals cordate-acum. ; teeth close, sharp. 
365 
tt Inflor. low-branched ; plants low ; rad. about 2. 
72. A. multiformis : rad. cordate-oblg., ser., rough ; si. nar. 
ON 
I 
mee 
73. A. riciniatus : rad. cordate-triang., dentate ; sinus broad. 
i 3172 
** Inflor. more irregular or diffuse. 
t Lvs. thicker, rougher; hair downy, when dry bristly. 
. A. elaeagnius: dark; gray ben.; lr. lvs. orbic.-ov. ; some 
triang. 373 
. A. Masardiensis : pale ; some lvs. elliptic, abrupt-biacuminate. 
= 
375 
