BULLETIN 
OF THE 
TORREY BOTANICAL CLUB. 
Vol. XVIII.J New York, July 1, 1891. [No. 7. 
A Comparative Study of the Styles of Composite. 
By J. S. CHAMBERLAIN. 
Plates CXIX-CXX. 
(Continued from page 186), 
HELIANTHOIDE# (Plate CXIX, Fig. 1-36). 
Gray” says: “Style branches of hermaphrodite or sterile 
flowers (or the undivided style in some of the latter) truncate or 
continued in a hairy appendage.” 
Bentham* says: ‘‘ Style branches vary in different genera 
from the truncate tips of the Senecio to the appendiculate branches 
of Asteroidez, or the subulate hispid branches of Vernoniacez.” 
In this tribe, as stated by Gray and Bentham, there is consider- 
able variation. Yet this variation, as far as my observations go, 
would enable us to make a division of the tribe, as in Asteroidez, 
though not so marked. The styles of the sterile hermaphrodite 
disk flowers are undivided, except in Po/ymnia, with a truncate 
bunch of brush hairs, or the brush hairs covering the entire sur- 
face. These characters are constant in all genera I have studied. 
The style of the pistillate flowers is also uniform, being either two- 
branched with the branches linear, acute with stigmatic papilla 
in two rather wide lines along the edges, or they occupy the en- 
tire inner surface. In all cases the style of the fertile hermaphro- 
dite flowers is two-branched. The stigmatic papillae occurring 
on the inner surface and the brush hairs form a triangular ap- 
pendage at the tip. 
37 L. ¢., Pp. 59- 
Set... 97g: 
