50 PITTONIA. 
2. H. sprnutosum. Aster spinulosus, Chapm. Fl. 199 . 
(1860).—On the western coast of Florida, in damp pine © 
woods. 
3. H. PALUDOSUM, D. C. Prodr. v. 264 (1836). Aster palu- — 
dosus, Ait. Kew. iii. 201 (1789).  Tripolium paludosum, Nees, — 
Ast. 155 (1832).—Of more extended range, reaching Carolina. — 
"That group of Asteraceous plants which Dr. Gray, in his 
latest work, restored to the genus Aster with most reluctance - 
is the genus DÆŒLLINGERIA, Nees. This was going counter — 
to the opinions of all the most noted synantherologists of 
the century. Cassini, Lessing, Nuttall, De Candolle, even 
Gray himself until late in his career, excluded these plants — 
from Aster. Indeed one must go back to the times of Lin- 
nous and Miller, to the days when as yet the Composite - 
had been studied only superficially, to find many botan- — 
ists of note calling these asters. Even since I began this | 
article, an accomplished botanist not long in this country, - 
but zealously studying our flora, has brought me a good - 
sheet of D. umbellata to ask in what genus he should look - 
for it. He had not thought of looking under Aster. “It | 
cannot be of that genus, surely!" In mode of growth the — 
plants all diverge from Aster in a manner which has hardly — 
yet been pointed out, though Nees observed it in one of the — 
species. All true asters have their broadest and amplest 
leaves at the base of the stem or arising from the root. 
D«LLINGERIA, on the contrary, not only has no radical |. 
leaves, but the lower part of the stem bears instead of leaves — 
a few small braets, these in some species being thin, appressed 4 
to the stem, and even embracing it as a sheath ; and from 
these sheathing bracts there is a more or less gradual tran- [ 
sition to the proper leaves higher up the stem. "This most E 
marked vegetative character, along with the entire leaves, - 
cymose rather than panicled heads, double pappus and 3 
