102 ANNUAL REPORT. 
SILPHIUM, Linnzus. 
laciniatum, Linn. Compass-Plant. 
terebinthinaceum, Linn. Prairie Dock. 
integrifolium, Michx. 
perfoliatum, Linn, Cup-Plant. 
PARTHENIUM, Linnzeus. 
integrifolium, Linn. 
AmBrosiA, Tournefort. Rag-weed. 
trifida, Linn. 
artemisizfolia, Linn. Hog-weed. 
psilostachya, DC. 
XantTHuM, Tournefort. Cocklebur. 
strumarium, Linn. 
HELIOPsIS, Persoon. Ox-eye. 
levis, Pers. 
Ecuinacka, Moench. 
angustifolia, DC. 
RupBeEcKIA, Linneus. Coneflower. 
laciniata, Linn. 
subtomentosa, Pursh. 
hirta, Linn. 
LEpacuys, Rafinesque. 
pinnata, Torr. and Gray. 
columnaris, Torr. and Gray. 
HELIANTHUS, Linneus. Sunflower. 
rigidus, Desf. 
occidentalis, Riddell. 
giganteus, Linn. 
grosse-serratus, Martens. 
tomentosus, Michx. 
strumosus, Linn. 
tracheliifolius, Willd. 
decapetalus, Linn. 
Corgopsis, Linneus. Tick-seed. 
trichosperma, Michx. 
palmata, Nutt. 
lanceolata, Linn. 
BipEns, Linnezus, 
frondosa, Linn. Beggar-Ticks. 
connata, Muhl. 
cernua, Linn. 
chrysanthemoides, Michx. 
Beckii, Torr. 
GAILLARDIA, Fougeroux. 
aristata, Pursh. 
HeLENIUM, Linneus. False Sunflower. 
autumnale, Linn. Sneeze-weed. 
ACHILLEA, Linneus. Mil-foil. 
Millefolium, Linn. 
ARTEMIsIA, Linneus. Wormwood. 
Canadensis, Michx. 
caudata, Michx. 
Ludoviciana, Nutt. 
dracunculoides, Pursh. 
frigida, Willd. 
biennis, Willd. 
Absinthium, Linn. 
ANTENNARIA, Gertner. Everlasting. 
margaritacea, R. Br. 
plantaginifolia, Hook. 
GNAPHALIUM, Linnzus. 
polycephalum, Michx. 
uliginosum, Linn. 
