494 GRIGGS: THE SUGAR GROVE FLORA 
Rubus odoratus 
Rynchospora glomerata 
Sambucus pubens 
Saxifraga virginiensis 
Trollius laxus 
Tsuga canadensis 
Unifolium canadense 
Viola rostrata. 
B. APPALACHIAN AND New ENGLAND SPECIES ON THE WESTERN 
EDGES OF THEIR RANGES (reaching Maine but not extending 
west of Lake Erie). 
Type range, SERICOCARPUS ASTEROIDES (FIG. 5). 
q é 
Fic. 5. Range of Sericocarpus 
asteroides. 
a K aw 72 
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- tlw 
o) be 
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% oi 
0 
Fic. 6. Range of Asplenium 
monitanum. 
The lines separating this group of plants from the preceding 
and following categories are somewhat arbitrary. There are many 
plants of evident boreal affinities which are now confined to the 
Appalachians. Their ranges form a continuous series between 
the typical Alleghenian, extending from Newfoundland to Lake 
Superior, down to those like Abies Fraseri and T suga carolipiana 
which are confined to a small area in the highest part of the 
southern mountains. Those which reach Ohio, however, seem to 
fall rather naturally into the two categories here listed. Those of 
the first group number 14 and include: 
Aster divaricatus 
Carex costellata 
Castanea dentata 
Dasystoma laevigata 
Eatonia nitida 
Mieracium paniculatum 
Hieracium venosum 
Kalmia latifolia 
Panicularia acutiflora 
Pinus rigida © 
Quercus Prinus 
Rhododendron maximum 
Sericocarpus asteroides 
Viola rotundifolia. 
