36. 
mollis, Lam. 
microcephalus, Torr. ana Gray 
grosseserratus, Martens 
tomentosus, Michx. 
strumosus, Linn. 
hirsutus, Raff, 
tracheliifolius, WiildL 
doronicoides, Lam. S. 
tuberosus, Linn. Artichoke. 
Actinomeris, Nuttall, 
squarrosa, Nutt, 
helianthoides, Nutt. 
Coreopsis, Linnaeus, Tick-seed 
discoidea, Torr. and Gray 
trichospenna, Michx. 
aristosa, Michx. 
tripteris, Linn 
senifolia, Michx. 
palmata, Nutt. 
auriculata, Linn, 
lanceolata, Linn. 
Bidens, Linnaeus 
frondosa, Linn. Beggar-ticks 
connata, Muhl. 
Bidens, chrysanthemoides, Michx. 
Beckii, Torr. 
bipinnata, Linn. Spanish Needle 
Verbesina, Linnaeus 
Siegesbeckia, Michx. 
Introduced 
