92 MISSOURI BOTANICAL GARDEN BULLETIN 
Natural 
Botanical name Common name Locality distribution 
PLANTS INTRODUCED BY RAILROADS, EXOTIC 
Agropyrum repens........ Couch-grass .....Fields and waste 
DIACEE 6 i5ccae ew Europe, 
Dactyloctenium AegyptiumEgyptian grass...Along railroads, 
not common....Asia, 
Linaria Elatine........... Toad-flax ........ Along the Mo. 
Pac. R. R. near 
Glencoe, Mo....Europe 
Mollugo verticillata....... Carpet-weed ..... Common in culti- 
vated ground...South 
America 
Sorghum Halepense....... Johnson grass.... Railroad banks 
and waste 
places ......... Europe, 
Asia 
Tribulus terrestris.......: Ground bur-nut...River banks and 
DOLLOMG « <.1-264'5% Europe 
NOTES 
Mr. G. H. Pring, Horticulturist to the Garden, gave an 
illustrated talk on ‘‘European Gardens,’’ at the Clifton 
Heights Presbyterian Church, April 20. 
Mr. L. P. Jensen, Arboriculturist to the Garden, gave an 
illustrated lecture before the Parkview Association, at the 
Grace Methodist Episcopal Church, May 1, on ‘‘The Planting 
and Care of Trees in St. Louis.’’ . 
On May 23, the delegates attending the convention of the 
Medical Library Association of America visited the Garden 
and were shown about the library and grounds by special 
guides. One of the features of their visit was an exhibit of 
the rare old herbals in the Garden collection and a descriptive 
talk on the same by Dr. George T. Moore, Director of the 
Garden. 
Dr. B. M. Duggar, Physiologist to the Garden, presented 
a paper before the St. Louis section of the American Chem- 
