1900] Rich, —Some new acquaintances 205 
maturity about one half the size of the latter, and by its nearly 
glabrous surface, the bur of X. Cazadense being densely hispid. 
Xanthium spinosum, L. (Spiny Clotbur) was also noticed here. 
Chenopodium ambrosioides, L. (Mexican Tea). Never before has 
the writer seen hereabouts what could unhesitatingly be pronounced 
this species. Its very leafy spikes, nearly entire upper leaves and 
repand lower leaves, presenting a different looking plant from the one 
with naked elongated spikes and coarsely toothed leaves known as 
the var. Anthelminticum, Gray, which is so common on waste 
grounds around Boston. ‘There were, however, some plants growing 
with it of an intermediate character, showing that the two plants are 
not specifically distinct. 
Sisymbrium altissimum, L., was very abundant the present sum- 
mer. When mature it loses all its leaves, leaving only a mass of 
long, stiff, slender pods, which stand out in all directions from the 
stem and branches. 
Berteroa incana, DC. (Hoary Alyssum). This grows abundantly 
on a grassy bank and along the roadside in the immediate vicinity of 
the railway. 
Conringia perfoliata, Link., which escaped the notice of the 
writer, was collected here June 27, 1897, by Mr. E. F. Williams. 
Verbena bracteosa, Mich. Two specimens of this western plant 
were collected August 4. 
Hibiscus Trionum, L. (Bladder-Ketmia), a branching annual with 
an inflated calyx, was also among the strange plants found. 
In addition to the above list, nearly all of which were collected by 
the writer for the first time, there were noted the following plants that 
are more commonly found in this part of the State: 
Cenchrus tribuloides, L., Echinospermum Lappula, Lehm., Litho- 
spermum arvense, L., Stachys palustris, L., Ricinus communis, L., 
Galeopsis Tetrahit, L., Solanum rostratum, Dunal., Amarantus bli- 
toides, Watson, Artemisia vulgaris, L., Lactuca Scariola, L., Galin- 
soge parviflora, Cav., var hispida, DC., and Lechea maritima, 
Leggett. : 
