364 
SYNGENESIA SUPERFLUA. 
Sp. pi. 3. p. 3035. Pursh, 2. p. 551. Nuttall, 2. p. 156. 
I insert this species with much hesitation; my specimens which were re- 
ferred to it by Dr. Muhlenberg, differ in some respects from the descrip- 
tion of Willdenow, and may really belong to another section of this genus. 
Stem three to four feet high, striate, glabrous, branching very much to- 
wards the summit, the young branches a little hairy. Root leaves wanting; 
stem leaves spathulate-lanceolate, acute, or slightly acuminate, a little hairy, 
particularly along the margins and veins. Flowers small in compact clus- 
tered racemes, forming a large terminal panicle. Scales of the involucrum 
not very numerous, subulate, nearly glabrous. Florets of the ray about 
twelve, narrow, pale purple; of the disk yellow, changing as they decay to 
purple. Seeds very glabrous. 
This plant, which is probably the A. Paniculatus of Muhlenberg and 
Pursh, differs very essentially from the A. Diversifolius. The A. Panicu- 
latus of Nuttall, must certainly be a different plant. 
Grows in damp rich soils in the low country of Carolina. 
Flowers September — October. 
40. CoRDifOLius. Lin 
A. foliis cordatis, 
acutis, subtus pilosis, 
argute serratis, petio- 
latis, petiolis alatis; 
caule paniculato, pilo- 
so; involucris laxis, 
subimbricatis. 
Leaves cordate, a- 
cute, hairy underneath, 
acutely serrate, petio- 
late, with the petioles 
winged; stem panicu- 
late, hairy; involucrum 
loose, slightly imbri- 
cate. 
Sp. pi. 3. 2036. Mich. 2. p. 114. Pursh, 2. p. 552. Nutt. 2. p. 156. 
Stem two to three feet high, branching, the branches pubescent. Leaves 
of the root and lower part of the stem cordate, tapering to an acute point, 
acutely serrate, slightly pubescent underneath, on petioles one to two in- 
ches long, very slightly winged. Flowers numerous, rather small, in pani- 
cles composed of crowded racemes. Scales of the involucrum linear-lan- 
ceolate, nearly glabrous, loosely appressed. Florets of the ray about 
twelve, narrow, white, tinged with purple. Seeds glabrous. Varies, with 
the lower leaves ovate-cordate, the upper spathulate-ovate, the serratures 
nearly obtuse, and the petioles more conspicuously winged* 
Grows in the upper and mountainous districts of Carolina and Georgia. 
Flowers September — November. 
