SYNGENESIA SUPERFLUA. 
361 
Folds cor da- 
ds, serrads. 
Leaves cor- 
date, serrate. 
35. Undulatcs. Lin. 
A. foliis caulinis ob- 
iongis, cordatis, ara- 
plexicaulibus, undula- 
tis, scabris, summitate 
dentatis; paniculae ra- 
rais patentibus, pauci- 
floris; involucris sub- 
squarrosis. 
Stem leaves oblong, 
cordate, amplexicaule, 
undulate, scabrous, 
toothed near the sum- 
mit; branches of the 
panicle expanding, few- 
flowered; involucrum 
slightly squarrose. 
A. Undulatus. Linn, verus sec. Smith. Sp. pi. edit. 1. 1228. 
A. Patens. Willd. Sp. pi. 3. p. 2034. Pursh, 2. p. 551. 
A. Amplexicaulis. Mich. 2. p. 114. 
Stem two to three feet high, scabrous, branching towards the "summit. 
Leaves of the stem scabrous, and a little hairy, slightly undulate, sometimes 
entire, but frequently toothed near the summit; amplexicaule with the lobes 
surrounding the stem; of the branches oblong-lanceolate, sessile. Flowers 
large, not numerous, in a loose terminal panicle. Scales of the involucrum 
very numerous, linear-lanceolate, acute, pubescent, reflected at the summits. 
Florets of the ray about twenty, bright bluish purple; of the disk numerous, 
yellowish, sometimes changing to purple, as they decay. Seeds hairy. 
Grows in dry soils — very common. 
Flowers September— -November. 
36. Diversifolius. Mich. 
A. foliis sub -integris, 
undulatis, sub-pubes- 
centibus, scabris, infe- 
rioribus alato-petiola- 
tis, cordato-ovatis, su- 
perioribus oblongo-Ian- 
ceolatis; panicula laxa, 
ramulis gracilibus ra- 
cemifloris. r 
Leaves nearly en- 
tire, undulate, pubes- 
cent, somewhat sca- 
brous, the lower ones 
cordate, ovate, with 
winged petioles, the 
upper oblong-lanceo- 
late; panicle loose, the 
branches slender, race- 
mose. 
