lO 



of products from the west regularly occurs, is in a position to receive the 

 plants thus dropped. Artemisia biennis and Verbena stricta have been 

 received by this means ; the latter is especially abundant around the rail- 

 road intersections. In addition to this opportunity, an exceptional one, as 

 it would appear, is presented by the permanent quarters of a circus and 

 menagerie (Sells Brothers'). 



On the grounds about these winter quarters near Columbus, about 

 twenty species of plants have been introduced and more than half of them 

 have not appeared elsewhere in the vicinity. The range and distribution 

 of the plants found is such as to increase the interest attaching to their ap- 

 pearance. The seeds were evidently brought upon the return at the close 

 of the season, carried in cars, cages, wagons, or preserved in the intestines 

 of animals. The litter of cars and cages seems to the writer the most likely 

 vehicle for the seeds of the larger number of plants found. 



Below are the species found on the circus grounds and appearing by 

 .some agency connected therewith ; those introduced independently at 

 other points in the county are marked with an asterisk ; accompanying 

 certain ones the range of the species is copied from the Manual or Synop- 

 tical Flora : 



Callirrhoe involucrata, Gray. Minnesota to Texas. 



Erodium cicutarium, L'Her. 



Clarkia pulchella, Pursh. Western Montana and westward. 



Amphiachyris dracunculoides, Nutt. Plains, Kansas and southward. 



Aster pauciflorus, Nutt. Kansas and west (?). 



Artemisia annua L. 



Dysodia chrysanthemoides. Lag.® 



Gutierrezia Texana, Torr & Gray. Sterile plains throughout Texas. 



Helenium microcephalum, DC. Southern Texas and adjacent Mexico. 



Helenium nudiflorum, Nutt. 



Helenium tenuifolium, Nutt. West of Mississippi river. 



Parthenium Hysterophorus, L. Throughout Eastern and Central Texas, 

 also east of Mississippi river. 



Solanum rostratum, Dunal. Plains of Nebraska to Texas, spreading east- 

 ward. 



Verbena angustifolia, Michx. 



Monarda citriodora, Cerv. Nebraska to Texas. 



Plantago Patagonica, Jacq., var aristata, Gray.* 



Amarantus spinosus, L. 



