205 
Matricaria (Fig. 5). 
M. inodora, L. Branches of the style in the perfect her- 
maphrodite flowers are like those of Achillea but not so long, 
which applies also to the brush hairs and papille. 
Artemisia (Fig. 6-10). 
A. Ludeviciana Nutt. Style branches of perfect hermaphro- 
dite flowers same as in Achillea but shorter. Brush hairs (fig. 
8) are longer and narrower. Papillz (fig. 9-10) are a little 
larger. The style branches of the pistillate flower, acute with the 
papillze in two lines along the edges, (fig. 6-7). 
SENECIONIDE (Plate CXX. Fig. 11-16). 
Two kinds of styles occur in Senectonidee corresponding to 
those of Helenioidee. The first division with a truncate bunch of 
brush hairs as in Senecio. The second division with triangular 
or obtuse tips is represented by Petasites and Arnica. 
Senecio (Fig. 11-12). 
S. aureus, L. The style branches are as in division I of 
FHlelenioide@. Brush hairs (fig. 11) are almost like those of 
Artemisia, but more acute. Papille shown at Fig. 12. 
Petasites (Fig. 13-14). 
P. palmata (Ait.), Gray. Branches of the style are very short 
compared with its length. The tips of the branches are some- 
what triangular. Brush hairs cover the outer faces entirely, the 
longest ones being at the tip. Papilla cover the entire inner 
surface except a small part at the tip (fig. 13). Brush hairs 
from the tip and base of branch (fig. 14). 
Arnica (Fig. 15-16). 
A. Chamissonis, Less. Branches of the style terete or nearly 
so, and obtusely tipped. Brush hairs (fig. 16) cover the outer 
face for about two-thirds of its length. They are longer and 
more numerous at the tip. The stigmatic papilla (fig. 15) in 
two wide lines on the inner face with only a very narrow zone be- 
tween them. 
CYNAROIDE# (Plate CXX, fig. 17-21). 
Branches of the style in the perfect hermaphrodite flowers are 
obtusely or slightly acutely pointed. The brush hairs cover the 
