TREES OP THE MISSOURI BASIN 
33 
Percentage of Trees, Pony Creek Near Council Bluffs, Marshall 
Silt Loam. 
Name of Species 
i-T a 
-p ft S 
Ulmus americana . , 
Ulmus fulva 
Prunus americana . , 
Carya cordiformis . , 
Prunus virginiana . , 
Populus deltoides . 
Cornus asperifolia . , 
Gymnocladus dioica , 
Ostrya virginiana. . 
Gleditsia triacanthos 
Crataegus mollis 
Acer Negundo 
Juglans nigra ..... 
Celtis occidentalis . 
Tilia americana . . . 
41.52 
8.98 
1.49 
17.15 
16.41 
‘4'i7 
1.59 
2.96 
3.00 
.74 
15.6 
10.4 
4.00 
"s'oo 
15.6 
0 
24.4 
14.6 
10.4 
This grove, comprising about sixty acres, is on the Grpssley 
farm adjacent to Pony creek with a slope north and east. Plot 
I is on the hill side. Plot II near a draw. It was isolated from 
all other groves and apparently had no connection with any 
other forests in that region. The trees were from eight to 
eighteen inches in diameter. The undergrowth consisted of 
goldenrod {Solidago canadensis^ Solidago nlmifoliay SoUdago 
latifolia), buckthorn {Rhamnns lanceolaia), snowberry {Sym- 
pJioricarpos .occidentalis) , smooth gooseberry {Ribes rotundi- 
folium)^ prickly ash {Zanthoxylnm americanum), sunflower 
{Helianthus strumosus), black cap raspberry (Rubus occiden- 
talis) undoubtedly introduced, wood thistle {Cirsium discolor) j 
stickseed {Lappula virginiana) and dutchman’s breeches {Bi- 
centra cucullaria). 
