FAMILIES OF FLOWERING PLANTS. 251 
and most familiar North Ameri- 
can genera, Aster and Solidago. 
They are the most ornamental 
of} our fall blooming wild flow- 
ers, and there is great diversity 
among the species. (Fig. 223.) 
Here also belong the various 
species of Baccharis, the only 
shrubby composite im eastern 
North America. The Inuleae 
contain the majority of the so- 
called “everlastings,” the flower- 
heads of which are dry and 
chaffy in texture, so that they 
keep in good condition for a 
long time. The edelweiss be- 
longs to this tribe, as also the 
cudweeds and wild everlastings 
of ourmeadows The “ Rose-of- 
Jericho” is a species of Odon- 
tospermum inhabiting the desert 
of Sahara. 
The Heliantheae include some after Britton 
Rudbeckias, Coreopsis and Bidens. 
The cocklebur (Xanthium Canadense). 
and Brown, Ill, Fl. Northeast. U.S. 
of our more showy-flowered composites, such, as the sunflowers (He- 
lianthus), of which there are many North American species, and the 
The garden marigolds (Tagetes) are 
closely related. (Figs. 224 and 225.) In the Anthemideae belong sev- 
eral of our rank weeds, like the iil-scented mayweed and the ox-eye 
daisy, also the chrysanthemum, which in its cultivated form has been de- 
Fic. 222, Boneset le satis Farsorkateen): AfterjBritton 
and Brown, Ill. Fl. Northeast. 
veloped from species with 
only a single row of rays ; 
the wormwoods and sage- 
brushes (Artemisia) and 
the feverfew (Pyrethrum). 
A species of the latter 
.genus yields buhach, or 
Persian insect powder. 
The Senecioneae contain 
the huge genus Senecio 
and the garden cinerarias, 
while the final tribe we 
shall mention, the Cyna- 
reae, comprises all the 
thistles and _ thistle-like 
plants distributed through 
various genera, of which 
Carduus, Centaurea andArc- 
tium (the burdock) are the 
principal ones. (Fig. 226.) 
All the Compositae agree 
in having the same general 
structure as the Cichori- 
