374 THE PLANT PHYLA 
culminating on the one hand in the 
Eupatoriaceae, and on the other in the 
Lactucaceae. 
Kery TO THE FAMILIES OF ASTERALES 
A. Pappus not capillary; plants typically large 
P and coarse. 
I. Receptacle chaffy. 
1. Usually with ray flowers—287. Heli- 
anthaceae. 
2. Without ray flowers—288. Ambros- 
waceae. 
II. Receptacle naked (rarely chaffy). 
1. Anthers tailless. 
. a. Involucral bracts mostly in 2 
series—289. Heleniaceae. 
b. Involucral bracts in many 
series—290. Arctotidaceae. 
2. Anthers tailed or mucronate—291. 
Calendulaceae. 
B. Pappus bracteose, none, or capillary; recep- 
tacle usually naked; plants typically 
low to medium sized. 
I. Usually without ray flowers; anthers 
tailed—292. Inulaceae. 
C. Pappus from short bracteose to capillary or 
none; receptacle naked; plants typi- 
cally medium sized. 
I. Usually with ray flowers—293. Aster- 
aceae. 
II. Without ray flowers; style branches 
filiform, hispidulous.—294. Vernoni- 
aceae. 
III. Without ray flowers; style branches 
clavate, papillose—295. Eupatoriaceae. 
D. Pappus a short crown or none; involucral 
bracts dry, scarious, imbricated; 
plants typically medium sized. 
I. Usually with white ray flowers—296. 
Anthemidaceae. 
