Jan., 1922] UPHOF — PLANTS IN SOUTHEASTERN MISSOURI 
17 
along the river during the rainless periods have the same type of vegetation 
as the mud flats of the lowlands described elsewhere. 
The margins of the islands in the Mississippi are also covered by the 
vegetation above described. On older islands thickets of Salix nigra and 
Adelia acuminata are very predominant. Populus deltoides, P. heterophylla, 
Prunus serotina, and Betula nigra are also generally met with. On the 
largest islands Taxodium distichum, Nyssa sylvatica, and such trees and 
shrubs as belong to the true swamp forests often appear. 
LITERATURE 
1. Bush, B. F. Notes on a list of plants collected in southeastern Missouri. Ann. Rept. 
Mo. Bot. Card. 5. 1894. 
2. Daniels, F. The flora of Columbia, Missouri, and vicinity. Univ. of Mo. Studies I, 
no. 2. 
3. Hus, H. An ecological cross section of the Mississippi River in the region of St. Louis, 
Mo. Ann. Rept. Mo. Bot. Card. 19. 1908. 
4. Mackenzie, K. K. Manual of the flora of Jackson County, Missouri. 1902. 
EXPLANATION OF PLATES 
Plate I 
Upper left: Hymenocallis occidentalis in lowlands; Dunldin County. * 
Upper right: Monarda Bradhuriana under young oaks; in hills, western Butler County. 
Lower left: Echinacea purpurea among several other species of perennial plants; near 
the edge of a forest, Iron County. 
Lower right: Hills covered with Quercus marilandica; in front, a specimen of Nyssa 
sylvatica, Butler County. 
Plate II 
Upper left: A pure stand of Nyssa sylvatica; Butler County. 
Upper right: Pinus echinata; Carter County. 
Lower left: Taxodium distichum formation; a mixed forest in the background; eastern 
Butler County. 
Lower right: Mixed forest growth along a stream at the base of a hill; undergrowth 
largely composed of Impatiens fulva; Ripley County. 
