Studies in Prairie and Woodland 



31 



trees, lianas and herbs occurring in an area of 16 square meters 

 surrounding the station where the factor readings were made. 

 The shade cast by the shrubs was so dense that most of the an- 

 nuals as well as the herbaceous perennials were extremely small. 

 The vegetation in an area of 16 square meters at the shrub 

 station : 



Woody Plants 



Anipelopsis quinquefolia 6 



Celastrus scandens 2 



Corylus americana 34 



Fraxinus lanceolata (seedlings). 6 



Morus rubra (seedling) i 



Prunus americana 4 



Quercus macrocarpa (seedlings) 2 



Rhus glabra 26 



Symphoricarpos symphoricarpos. 7 



Ulmus fulva (seedlings) 7 



Vitis vulpina 6 



Amphicarpa comosa 



Amaranthusretroflexus(Tuderal) 



Ambrosia trifida (ruderal) 



Acalypha virginica 



Andropogon scoparius 



Aster drummondii ] 



Aster novae-angliae{ 



Carex sp 



Carduus altissimus (ruderal) . . . 

 Chenopodium alburn (ruderal).. 



Eragrostis pectinacea 



Euphorbia preslii 



Fragaria virginiana 



Geum canadensis 



Helianthus hirsutus 1 



Herbs 



38 Humulus lupulus 2 



I Lactuca scariola (ruderal) 9 



8 Leptilon canadense (ruderal).. .522 



16 Melolitus officinale (ruderal) ... i 



19 Monarda fistulosa 26 



Muhlenbergia sp. 14 



Onagra biennis 6 



25 Panicum capillar e (ruderal).... 2 



8 Setaria viridis (ruderal) 3 



27 Solanum nigrum 14 



6 Trifolium pratense i 



I Verbena stricta (ruderal) 9 



27 Vernonia fasciculata i 



30 Viola sororia 49 



The station in the linden wood was located on a north slope in 

 a growth of virgin forest on the campus of the Peru State Normal 

 School, figure 12. A good idea of the composition of this forest 

 together with the dominance of Tilia americana may be gained by 

 a study of the accompanying belt transect. This extends up from 

 the dry creek at the base of the slope 34 meters to the station and 

 thence onward toward the crest of the hill, figure 13. The iron- 



37 



