126 BENGAL PLANTS. [Artificial Gi 
{{Flower-heads 1- flowered ; heads homogam 
with Ii 
style-arms, rounded or dilated at their tips ; receptacle 
naked :—[p. 125 
Pp. 
Achenes faintly ribbed; flowers usually rayed; ad 
| pus- -hairs all slender, those of ray-florets few ac 
x 459. Vicoa. 
ag i distinctly ribbed ; flowers either ae 
discoi ; Pappus of outer florets iia of ot fl 
**Bracts of the involucre 1- seriate, asl free or valle 
with Sometiines a few short outer bracts (calycule) at ie 
eads heterogamous or hom mogamous; anther-cells 
eaves alternate; pappus of fine hairs, usually soft and 
generally copious; style-arms of weasigetinan flor 
truncate or obtuse, penicillate or with a h y tip:— all 
Heads all ho omogamous; florets (in our pei) 
putple 4.5. jc4..5 03. Emilia. 
Heads rayed, heterogamous; florets all ie 
Leaves Opposite; pappus paleaceous or abasek! pul 
arms truncate, ricci or not, or shortly appendag 
at tip; heads heterogamo ) 
Pappus absent ; eed sasiee or dentate ; heads ee : 
small, ray sometimes absent... -463. Flavertt 7 
Pappus present; leaves pinnati ‘hands ae flowel! = 
sh 
Pry 4 ia Pee Senet Nae ces cee ea en haa 
CMO Ow eee sees 
) : 
sterile oreis eae pappus of 2-4 arms, or paleaceous, 0 
absent ; lea e base peaally opposite, those higher UP 
opposite or cae i—[p. 1 
eads 1-flowered, in clusters ; bracts of the nt 
luere forming a 5-fid tube ; lower or all the leaves oppose» 
rbs 466. Lagascea: 
villous he i 
Heads many-flowered :— 
foes Ad ee ee 
