A List of Plants From the Missouri Ozarks

Abstract

The list which follows is based upon collections and observations made in the Gzarks of Missouri during August, 1927. The vegetation of this region is scantily represented in the Herbarium of the Uniiversity of Missouri and imperfectly known at least to the botanists of that institution. An exploratory trip was therefore made in a truck belonging to the Department of Botany through certain parts of Southern Missouri. The route followed is indicated in the accompanyirig map. It was planned only with the aim of seeing as much of the country as possible in so limited a time without undue haste. The party camped along the way, and spent usuaclly several days in each spot of interest. Most of thie country covered supports a forest of oak, with a scattering of other trees, notably pinie and hickory. In the valleys are cleared regiois. Here and there arise the great springs, flowinog pei-r haps several millions of gallons a day, creating moist places where various ferns flourish. In a few places, as noted below, swamps occur, witn characteristic vegetation. In addition to the species named in the list, casual notice was taken of others inhabiting the springs. These were not, for lack of proper equipment, collected and identified. The following were recognized: Myriophyllum sp., in Meramec Springs, Phelps County: Potamogeton, sp. (probably P. peetinatus L.) and Naias sp. in the spriiig at Yancy Mill, Phelps County; Vallisneria spiralis L., in the spring at Howe's Mill; and Radiettla Nasturtiumn-aquaticurm (L.) Britten and Rendle, growing several feet in height from the bottom of the spring at Centerville, Reynolds County, also at Yancy Mill. ited time forbad the inclusion of all groups. Neither are Bryopl-hytes included in the list, since these were (243)