194 
Short on the Botany of Illinois. 
Verbena stricta , 
Parnassia palustris, 
V. hastata, 
Gentiana rubricaulis, 
Gerardia purpurea , 
G. quinquefiora, 
G. Jlava, 
Slum latifolium , 
G. erecla, 
7 \ 
Archemora rigida, 
G. auriculata , 
Artemisia caudata, 
G. quercifolia , 
Polygala verticillata, 
Petalostemum candidum, 
P. ambigua, 
Desmodium , ) 
P. incarnata, 
> of various species. 
Lespedeza, ) 
Linum rigidum, 
Euphorbia corollata, 
Potentilla fruticosa, 
Gaura angustifolia , 
Psoralea jloribunda , 
Typha latifolia, 
Boottia sylvestris, 
Cassia chamcecrista, 
Plantago cor data, 
C. marilandica, 
P. aristata, 
Monarda fiistulosa , 
Cissus Canadensis . 
Leptandra Virginica, 
Chelone glabra , 
Lythrum hyssopifolium , 
Angelica triquinata, 
Pedicularis pallida , 
Epilobium lincare, 
Gillenia slipulacea , 
Lysimachia revoluta, §v. 
Doubtless many other species came under our observation, 
but being so common in other parts of the Western country, 
I omitted to note them. 
In relation to the botany of the prairies, I have only to 
add a few remarks on the shrubs which are found among 
them; for although in the more open districts of this kind no 
ligneous or perennial stems are permitted to escape the rava¬ 
ges of the annual fires which sweep over them, yet on the 
margins of ‘sloughs,’ and along the courses of the small 
streams which occasionally meander through them, clumps of 
bushes and clusters of shrubbery are always to be found. 
These ‘roughs,’ as they are called, furnish welcome retreats 
to grazing cattle, and sometimes to the traveler’s horse, from 
