A field survey of Warren County made during the months of April, May, and June of 1962 identified over 200 collections of flowering plants. During the fall of 1962 a survey of the Red Rock Dam area identified over 50 collections of flowering plants. Simpson College Herbarium specimens of these areas were carefully checked and annotated. In these collections, 17 species were found that had not been previously published for these areas

Beck, Reldon

University of Northern Iowa

Proceedings of the Iowa Academy of Science Volume 70 Annual Issue Article 9 1963 Additions to the Vascular Flora of South Central Iowa Reldon Beck Simpson College Let us know how access to this document benefits you Copyright ©1963 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Beck, Reldon (1963) "Additions to the Vascular Flora of South Central Iowa," Proceedings of the Iowa Academy of Science, 70(1), 51-52. Available at: https://scholarworks.uni.edu/pias/vol70/iss1/9 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact scholarworks@uni.edu. Additions to the Vascular Flora of South Central Iowa RELDON BECK1 Abstract. A field survey of Warren County made during the months of April, May, and June of 1962 identified over 200 collections of flowering plants. During the fall of 1962 a survey of the Red Rock Dam area identified over 50 collec-tions of flowering plants. Simpson College Herbarium speci-mens of these areas were carefully checked and annotated. In these collections, 17 species were found that had not been previously published for these areas. In a field survey made of the Red Rock Dam area in the fall of 1962, over 50 collections of flowering plants were identified. A field survey of W anen County made during the months of April, May and June of 1962 identified over 200 collections of flowering plants. The purpose of collecting from the Red Rock Dam area was to increase the number of known species in this area. As soon as the Red Rock Dam is completed, many of the areas of col-lecting will be under water due to the conservation pool (I). When the lake is completely full, practically all of the collecting area will be covered by water. The taxonomy classes of Simpson College have made a careful survey of the vascular flora of Warren County. Several hundred specimens have been collected from this county and recorded in the Simpson College Herbarium. Simpson Herbarium specimens plus my own specimens were compared with those of Van Bruggen (2,3). Van Bruggen made an extensive survey of a nine-county area of South Central Iowa during the growing season 1955-1957. Included were Warren County as well as Marion County, in which Red Rock Dam is located. TOPOGRAPHY, GEOLOGY, AND DRAINAGE The Red Rock area is in the Eastern part of Marion County, in the basin of the Des Moines River. The underlying bedrock is composed chiefly of sandstone, limestone, and shales. This was all covered at one time by the Kansan Glacier and, as a result, much of the bedrock is deeply covered with glacial till. The soil types are of the Clinton found on ridges and the Lindley found on slopes ( I ) . The valley floor of this area varies from 1 to 3 miles wide. The land above this is steep to rolling. The slope is generally gentle. 1 Dept. of Biology, Simpson College. 51 1Beck: Additions to the Vascular Flora of South Central IowaPublished by UNI ScholarWorks, 196352 IOWA ACADEMY OF SCIENCE [Vol. 70 In a few places there are sandstone outcrops which are nearly vertical cliffs. The major tributaries of the study area are the White Breast Creek and the South and Middle Rivers. Warren County, at one time, was covered by the Kansan Gla-cier. Its bedrock is so deeply buried by subsequent deposits of drift and loess that it has no effect on the soils at the surface. The soil layer over the county is made up of 26 different soil types ( 4). The land is rolling, but is quite abrupt and steep along the main streams, which are the North, Middle, and South Rive:·s. The Des Moines River borders \i\Tarren County on the northeast corner. Following is the list of species to be added to the vascular flora. already reported from these two areas. Apocynum medium Greene. R-24, T-76, Sec. 26-25. Dry ditch on either side of the road 1~ mile S. of Indianola. Reldon Beck, June 20, 1962. Carex aggregata. Mockenz. R-25, T-76. WJf Sec. 28. Wet roadside <litch 1 mile S. of Martensdale. Reldon Beck, June 5, 1962. Carex albolutescens. Schw. \Voods beside lake shore; Lake Ahquabi State Park. Reldon Beck, June 18, 1962. Circaea canadensis. Hill. R-24, T-76, Sec. 3. Rich moist wooded hill-side: 2 miles E. of Spring Hill. Reldon Beck, June 27, 1962. Comus stolonifera Michx. Woods beside lake shore; Lake Ahquabi State Park. Reldon Beck, June 20, 1962. Corydalis aurea Willd. R-24, T-74, Sec. 22. Squaw Twp. Roadside ditch, dry gravel. Kent Acheson, May 2, 1962. Linum usitatissimum L. R-23, T-26, SWJ~ Sec. 19. Dry railroad bed 3 block E. of Simpson College campus. Reldon Beck, June 18, 1962. Lycopt1s rubellus Moench. R-20, T-76, NWJ4 Sec. 2. On road below Red Rock Cliff; sandy, moist soil. Reldon Beck, Sept. 15, 1962. Nastuitium officinale R. Br. R-20, T-76, NJf Sec. 3. Red Rock Cliff. Moist rich woods and sandstone bluffs. J. L. Carter, May 17, 1960. Panicum oligosanthes Schult. R-24, T-76, Sec. 25-26. Dry roadside ditch Jf mile S. of Indianola. Reldon Beck, June 18, 1962. Polygala incarnata L. R-19, T-76, SJf Sec. 5. Shaded, moist woods; top of Elk Rock. Reldon Beck, October 12, 1962. Potamogeton zosteriformis Fem. Aquatic plant; Lake Ahquabi State Park. Reldon Beck, June 20, 1962. Potentilla canadensis. L. Dry soil. Indianola. Josephine Sawoel, May 6, 1906. Pyrus americana. Gray. Indianola. Agnus Buxton, June 2, 1890. Woods and lawns. \V. Yewicomb, May, 1890. Rhamnus cathartica L. R-24, T-75, NWJ4 Sec. 22. Margin of dry woods; Camp Wesley Woods; 6 miles S\V. of Indianola, Iowa. Reldon Beck, May 11, 1962. Vaccinium corymbosum L. Swamps, Indianola, Iowa. G.H.B., May,--. Viola papilionacea Pursch. R-24, T-76. Rich grazed pasture land be-tween Sandyville and Ackworth. Roy Crabtree, April 26, 1960. Literature Cited l. U.S. Army Corps of Engineers. 1960. Red Rock Reservoir Howell Dam Site Des Moines River, Iowa. Design Memorandum No. 13 Geology and soils. U.S. Army Engineer District Rock Island, Illinois, p. 1-13. 2. Van Bruggen, Teel. 1958. The Flora of South Central Iowa. Unpublished thesis, State University of Iowa, Iowa City, Iowa. 3. --------. 1959. Proc. Iowa Acad. Sci. 66:169-177. 4. Stevenson, W. H. and P. E. Brown. 1930. Soil Survey of Iowa. vVarren County Soils. Iowa Ag. Exp. Sta. Soil Survey. 2Proceedings of the Iowa Academy of Science, Vol. 70 [1963], No. 1, Art. 9https://scholarworks.uni.edu/pias/vol70/iss1/9

Additions to the Vascular Flora of South Central Iowa

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