MISSOURI BOTANICAL GARDEN BULLETIN 89 
Method of Natural 
Botanical name Common name introduction Locality distribution 
rifolium procumbens.....Hop-trefoil ...... With grain....... Along roads and 
railroads ...... Europe 
rifolium repens........+. White clover..... With seeds...... COMMON Gis ac aso% Europe 
erbascum Blattaria...... Moth mullen..... With grain....... Cultivated 
grounds ....... Europe, 
Asia 
erbascum Thapsus....... Great mullen.....With grain....... Waste places, 
common ....... Europe, 
Asia 
eronica arvensis.........Wall speedwell...With grain....... Cultivated fields.. Europe 
eronica peregrina........Purslane 
speedwell ..... With grain....... Cultivated fields.. Europe 
‘anthium canadense...... American 
cocklebur ...... With grain....... Waste places... Asia 
PLANTS INTRODUCED BY WIND, NATIVE 
ndropogon Elliottii...... 
Elliott’s beard- 
CTRRS foe eee ol a ae eae Troublesome 
weed in 
meadows ......Pa.to Fla. 
and Tex. 
lieracium longipilum.... .Long-bearded 
WA WEWGGUS ncaa niseam a tem es Prairies and dry 
WOOGS: (6.05% a's: Ont. to Minn. 
and Tex. 
luchea camphorata.......Salt-marsh 
MOADANG sec cao s oalatty a teeta In swamps.......N. J. to Fla., 
near the 
coast 
PLANTS INTRODUCED BY WIND, EXOTIC 
maranthus graecizans....Tumble-weed ..........-. eee eens Open sandy placesTropical 
America 
actuca Scariola.......... Prickly lettuce: «2.08 ice erate Waste places, 
common ...... Europe 
actuca Scariola var. 
SNLOUTOLG acc cata s son oss Willd lettuces. «ict<eac aia werae cane . Everywhere per- 
nicious weed...Europe 
ONCRHUS GSPEP. . a... 6c e ss Spiny sow-thistle.................. Waste places, 
common ...... Europe 
