Griccs: THE SUGAR GROVE FLORA 497 
E. MISssISsIPPIAN PLANTS ON THE EASTERN EDGES OF THEIR RANGES, 
Type range, ISOPpYRUM BITERNATUM (FIG. 9). 
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Fic. 9. Range of Isopyrum biternatum. 
These are mostly plants characteristic of the great forest which 
once covered the Mississippi Valley and number 15 including: 
Aesculus octandra* 
Afzelia macrophylla 
Asclepias Sullivantii 
Bidens aristosa 
Brauneria purpurea* 
Dodecatheon Meadia* 
Fraxinus quadrangulata 
Hypericum Drummondii 
Isopyrum biternatum 
Psoralea Onobrychis 
Quamasia hyacinthina* 
Smilax ecirrhata* 
Sullivantia Sullivantii 
Valeriana pauciflora* 
Veratrum Woodit 
F. PLANTS ON THE SOUTHERN EDGES OF THEIR RANGES. 
Type range, SCUTELLARIA GALERICULATA (FIG. I0). 
This appears to be a miscellaneous aggregation without much 
similarity in range except that they are northern but not moun- 
tain plants. Probably further study and comparison would dis- 
cover common characteristics as conspicuous as in other groups. 
Some of them like Anemone canadensis are bounded by the Basin 
stipitatum, and Trichostema dichotomum have boundaries running from northeast to 
southwest instead of east and west while Napaea dioica reverses the case and is 
reported northwestward as far as Minnesota. Porteranthus stipulatus and Trifolium 
reflexum are transitional between this and the next group in that they do not cross 
the mountains but stop in western New York. Lobelia leptostachys also is not known 
much beyond the mountains and is likewise transitional to the next group. 
* Also known locally further east but the main body of the range stops in Central 
Ohio. 
