VEGETATION TYPES. 
183 
noteworthy that the three first mentioned are all open types of vege¬ 
tation, with many herbs, while the other three are dense and shady, 
with few herbs. 
The 11 plant lists together contain 128 species of woody plants 
and 187 of herbs, which is probably about four-fifths as many woody 
plants and one-third as many herbs as could be found in the same 
area by a thorough search. Sixty per cent of them appear in only 
one list each, 20% in two, 10% in three, 5.5%. in four, 2.5% in 
five, 1.3% in six, and 1% in more than six. The average species is 
common to 1.8 of the vegetation types as here defined. But the 
average woody plant is much less particular about habitats than the 
average herb, for woody plants have an average distribution through 
2.4 types and herbs only 1.4. (If the rarer herbs were included the 
last figure would be still smaller.) This seems to indicate that the 
herbs are more sensitive to minor variations of soil, illumination, 
etc., than the trees and shrubs are, which is just what we should 
expect. 
INDEX OF PLANT NAMES 
A 
Acer Floridanum, 123, 173 
Acer Negundo, 173, 179 
Acer rubrum, 175, 177, 179 
Acnida australis, 177 
Actinospermum angustifolium, 166 
Aeschynomene viscidula, 166 
Afzelia cassioides, 145 
Air-plant, 162, 167, 171, 174, 176, 179 
Amorpha fruticosa, 171 
Ampelopsis arborea, 176, 177, 179 
Anastrophus paspaloides, 141 
Andropogon, 125 
Andropogon Elliottii, 166 
Andropogon Virginicus, 166 
Apics tuberosa, 176 
v Aralia spinosa,. 169, 176 
Arisaema Dtacontium, 174 
Aristida spiciformis, 145 
Aristida stricta, 145, i66, 169 
Aronia arbutifolia, 145 
Asclepias humistrata, 167 
Asclepias verticillata, 166 
Ash, 173, 175 , 177 , 179 
Asimina angustifolia, 166 
Asimina parviflora, 174 
. Asimina reticulata, 145 
Asimina speciosa, 166 
Asplenium firmum, 174 
Asplenium platyneuron, 174 
Asplenium resiliens, 174 
Aster adnatus, 145 
Aster Carolinianus, 176, 177 
Aster concolor, 167 
Aster squarrosus, 167 
B 
Baccharis halimifolia, 167, 176 
Bamboo, 174 
Bartonia sp., 141 
Bartonia verna, 141 
Basswood, 171, 173 
Batodendron arboreum, 142, 143, 168, 
I 7 L 173 , 175 
Bay, 145, 177 , 179 
Beggar-lice, 166 
Bejaria racemosa, 141, 142, 143, 145, 167 
Berchemia scandens, 140, 176, 177, 179 
Berlandiera subacaulis, 166, 169 
Bignonia crucigera, 174, 176 
Black gum, 179 
Black haw, 171, 173 
Black-jack oak, 166, 146 
Black pine, 145 
Black-root, 145, 166 
