184 
Division II. 
Aster® (plate CXVIII, fig. 22-28). 
A. Nove-Anglig,L. The style branches of the hermaphrodite 
flowers are about the same length as those of Solidago, but are 
flattened and much narrower. The stigmatic lines are broader 
and more distinct than in the first division, They occupy two- 
thirds of the branch. The branches are linear to the end of the 
stigmatic lines; above this portion of the branch the brush hairs — 
form a triangular appendage, the hairs almost covering both 
faces, extending down somewhat between the lines on the outer 
face (fig. 22, 23). The papille (fig. 28) are short and obtuse. 
Brush hairs (fig. 27) are rather short and broad. The style 
branches of the pistillate ray flowers are narrow and acuminate, 
while the papilllz occur in two lines along the edges, the brush 
hairs being absent (fig. 24-26). 
Erigeron (Fig. 29-33). 
£. Philadelphicus, L. Style branches about one-half as long 
as in Aster. Stigmatic lines occupy two-thirds of the branch, 
brush hairs covering both faces above the end of the stigmatic 
lines and forming a triangular appendage (fig. 29-31). The 
stigmatic lines are narrower and the papillz larger than in Aster 
(fig. 33). Brush hairs are shorter and more obtuse (fig. 32). 
Aphanostephus™ (Fig. 34, 35). 
A. ramosissimus, DC. Style branches like those of Zrigeron, 
but only half as long. Stigmatic lines occupy three-fourths of 
branch. The appendage of the brush hairs is very short. The 
papillz are smaller than in Erigeron (fig. 35), whereas the brush 
hairs are narrower and more obtuse (fig. 34). 
Boltonia® (Fig. 36, 37). 
B. asteroides (L.) L’Her. Style branches very broad in propor- 
tion to their length, being about one-third as broad as they are 
long. In length they are like those of Arigeron. Stigmatic lines 
occupy four-fifths of the branch. The brush hairs form a mu- 
cronate-pointed appendage. The papille (fig. 37): and brush 
hairs (fig. 36) are nearly like thos¢ of Erigeron. 
% Gray, |. c., p. 56. 
3 Gray, l. c., p. 55. 
32 Gray, l. c., p. 56. 
scnceaiaten 
