HARPER: BOTANICAL CROSS-SECTION OF Mississippi 383 
weeds; but even the weeds are rather characteristic of this region, 
both in Mississippi and in Alabama. The following list of plants is 
derived from 128 miles of travel through the prairie region in 
1911, and from 69 miles over part of the same route (viz., from 
Tupelo to Artesia and McIntyre) in 1912. The country between 
Corinth and Tupelo, traversed on the 1912 trip, although mostly 
underlaid by the same formation, is not taken into consideration 
_ in the statistics because it has much more of the superficial sandy 
loam (Lafayette?), a difference which is strongly reflected in the 
vegetation. The figures for the two years are kept separate, 
because one set of observations was made in early summer and 
one in late summer, which makes a considerable difference in the 
aspect of the herbaceous vegetation. The first figure in each case 
is for June, 1911, and the second for August, 1912. Species seen 
less than three times in traveling these 197 miles are omitted. 
TREES HERBS 
24+7 Quercus stellata 31 +18 Sorghum Longer 
21+5 Salix nigra 
oe +10 os deltoides 
quidambar Styraciflua ; 
i: Ss ee Phellos 24+o0 Anthemis Cotula 
ba 
Ww 
13+5 Quercus falcata? 8+15 Helenium tenuifolium 
8+3 uercus marylandica 20+0 Da cus” * s : 
7+3 Platanus occidentalis o+19 oe . ricer a 
6+4 Hicoria ovata? 19 +0 tag 
7+0 Ulmus alata? eh — lone oen: 
2 ti I+9 etoc sp. 
Hele ae nigra 6+4 Ambrosia wee 
3+3 Quercus pagodaefolia nie aan serotin 
6+0 ee triacanthos (intro- nia Apocyniim Re cata m 
o+7 Chama ta fasciculata 
: se dots — (introduced) ets Stoners pevecke vaal 
5+0 Hicoria alba? 6+0 Ratibida pinnata 
4+2 Quercus lyrata? 4+2 Acne iactatatuns 
*. x, 6 sp- 
3+0 Fraxinus sp. o+ 
greene bie = cata Curtis sanguinalis 
2+1 Cercis Canadensis o+5 Syn 
I+2 Juniperus virginiana o+5 Bidens sp 
thiu 
oO u 
ee pe Boltonia asteroides 
19+4 Prunus angustifolia 4+o Asclepias tu 
13+1 Sambucus canadensis 4+0 
4+5 Cephalanthus occidentalis 2+2 Typha latifolia 
7+1 Brunnichia cirrhos o+4 Solidago sp- 
6+ coma radicans o+4 Croton capitatus 
3+2 Rhus glabra o+4 Carduus sp- 
2+ assafras variifolium 3+0 Andropo: sco 
3+0 Smilax glauca 3+0 Cyperus pseudovegetus 
3+o Rubuss o+3 Conoclinium coelestin 
2+ ria macrosperma o+3 § tiphium | terebinthinaceum 
Ga 
ap Gpoconaies indicus 
