ANTHOPHYTA 375 
FE. Pappus capillary; involucral bracts mostly 
valvate, not scarious; plants larger. 
I. With or without rays—297. Senecionid- 
acede, 
F. Pappus mostly capillary, plants usually 
rather large and stout. 
I. Involucral bracts much imbricated. 
II. 
Family 287. 
Family 288. 
Family 289. 
Family 290. 
Family 291. 
Family 292. 
1. Flowers all tubular, receptacle usu- 
ally bristly—298. Carduaceae. 
Involucral bracts little imbricated. 
1. Flowers all labiate, receptacle usu- 
ally naked—299. Mutisiaceae. 
2. Flowers all ligulate, receptacle usu- 
ally naked—300. Lactucaceae. 
Helianthaceae. Sunflowers. Herbs; 
calyx not capillary; receptacle chaffy; 
usually rayed; mostly large, coarse 
plants.—Helianthus, Zinnia, Rud- 
beckia, Silphium. 
Ambrosiaceae. Ragweeds. Herbs; 
calyx not capillary; receptacle chaffy; 
rayless; mostly large, coarse plants. 
—Ambrosia, Xanthium. 
Heleniaceae. False Sunflowers. Herbs; 
calyx not capillary; receptacle naked; 
rayed or rayless; anthers tailless; 
medium sized plants.—Helenium, 
Gaillardia. 
Arctotidaceae. Gazanias. Herbs; calyx 
not capillary; receptacle naked; 
anthers tailless. South African plants. 
—Gazania, Arctotis. 
Calendulaceae. Marigolds. Herbs; 
calyx not capillary; receptacle naked; 
anthers tailed. Old World plants, 
mostly tropical.—Calendula. 
Inulaceae. Everlastings. Herbs, with 
some shrubs and small trees; calyx 
from bracteose to capillary; receptacle 
usually naked; anthers tailed; usu- 
ally rayless; mostly low plants.— 
