162 BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VOL. 1. NO. 3. 
major, Host., Genista tinctoria, L., Lepidium ruderale, L., Lon- 
icera Japonica, Lonicera Tatarica, L., Ranunculus acris, L., 
Rhamnus cathartica L., Rosa rubiginosa, L., Salix hahylonica, L., 
Salix pentandra, Salsola Tragus, L., Sisymbrium altissimum, L., 
Silene vulgaris, Gar eke, Trifolium dubium, Sibth., T. agrarium 
L., and T. incarnation L. 
A second class may be formed of 5 American species that are 
eastern in their range; never having been reported as far as the 
writer knows any farther west than the state of Indiana, so that 
their occurrence here is equivalent to an extension of the western 
limit of their range. These species are: Aster Shortii, Hook., 
Aster Lowrieanus, Porter., Bromus hordeaceus, L., Conopholis 
Americana, Wallr., and Leptamnium Virginianiim Raf. 
Six species have come to us from the west and as they have 
all been found growing chiefly, if not exclusively, aloiig the rail- 
way tracks of the city, their seeds were no doubt first introduced 
here by railway trains from the states west of us. These species 
are: Gaertneria acanthicarpa, Britton, Helianthus scaberrimus, 
Ell., Linuni Lewisii, Pursh., Ratibida columnaris, Don., Solanuni 
rosiratum, Dunal. and S. triflorum Nutt. Two European species, 
Sisymbrium altissimum, L., and Salsola Tragus, L., may also be 
]jlaced in this class as they first established themselves in the 
Western states and are now extending their range eastward. 
With the exception of 2 tropical species. Datura Metal, L., 
and I porno ea purpu.rea, Roth., which have escaped from gardens, 
the 50 species remaining are native plants, whose range overlaps 
the area considered in the list, and which one might therefore 
expect to occur in our county wherever the natural conditions 
arc suited to the habits of the species. 
The nomenclature followed is that of Britton & Brown's "Il- 
lustrated Flora of the Northern United States and Canada," edi- 
tion of 1898. In a few cases, however, the more familiar names 
of Gray's Manual have been added in parenthesis. 
List of Species* 
750 ^sculus glabra, Willd. Ohio Buckeye. A shade tree along Han- 
over Street on the South Side. 
751 Alnus Alnobetula, K. Koch. Mountain Alder. Near Oakwood sta- 
tion in township of Oak Creek. 
752 Amelanchier rotundifolia, Roem. Round-leaved June-berry. 
Occasional along the east bank of the Milwaukee River. 
7.T'3 Anagallis arvensis, L. Scarlet PimpernelL By the roadside on 
Hawley Road, south of National Ave. 
