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also Bidens hipinnata, Ruhus allegheniensis, and Solidago caesia. 
It is quite interesting to note the entire absence here of the 
Hydrophyllum and the Dicentras which are so profuse in the 
North Wood. 
III. Of the open tracts the west section is perhaps the driest. 
.There are several trees scattered over the larger part of it, and 
west of the library these are numerous enough to make it quite 
shaded. The prominant trees are Fagus grandifolia, Fraxinus 
americana, Ulmus americana and fulva, and Acer saccharum. 
Of the herbaceous plants the most prominant are: 
Andropogon virginicus Dactylis glomerata 
Danthonia spicata Erigeron annuus 
Poa compressa Erigeron philadelphicus 
Poa pratensis Capsella Bursa-pastoris 
Juncus tenuis 
IV. The south hillside has the flora of an open meadow and 
includes several grasses and others: 
Achillea millefolium 
Ambrosia artemisiifolia 
Asclepias syriaca 
Daucus carota 
Dactylis glomerata 
Erigeron annuus 
Erigeron philadelphicus 
Galium aparine 
Galium concinnum 
Hypericum mutilum 
Lactuca scariola 
Poa pratensis 
Ranunculus abortivus 
Rumex acetosella 
Rumex crispus 
Rumex obtusifolius 
Saponaria officinalis 
Solidago rugosa 
Solidago serotina 
However at the foot of the hill, a line of Spruce trees casts such 
a shade that there are but a few forms, especially Galium aparine, 
Geum vernum, Menispermum canadense, P seder a quinquefolia, 
Ranunculus abortivus. 
But taken as a whole the south hillside has the widest variety 
of any group studied. This appears to be due to the abundant 
sunlight and rather moist soil, brought about by a springy’’ 
condition of the underlying rock strata. Also the fact that 
this receives very little attention during the year — it being 
mowed not more than twice in the twelve-month^ — permits 
the introduction, growth and fruiting of many new and varied 
forms. 
