561 EIQGENIA Erigenia Number 18, October 2000 The Illinois Native Plant Societ}' Journal The Illinois Native Plant Society is dedicated to the preservation, conservation, and study of the native plants and vegetation of Illinois. Erigenia is named for Brigaiia biilhosa (Michx.) EXECUTIVE Committee of the Society Nutt. (harbinger of spring), one of our earliest PRESIDENT: Kayri Havens blooming woodland plants. The first issue was PRESIDENT-ELECT: Todd Bittner published in August 1982. Past President: Mark Basinger Copyright © 1999 The lUinois Native Plant Socict}' TREASURER: Jon Duerr (ISSN 8755-2000) Recording Secretary: Mike Tyner MEMBERSHIP: Lorna Konsis Erigenia Staff ER/GENM Editor: Barbara Johnson Harbinger Editor: Ken Konsis EDITOR: Barbara Johnson Board Members: TECHNICAL EDITOR: Gerould Wilhelm Pat Armstrong, Wilham Handel, Dave Ketzer, PROOFREADER: Floyd Swink Deb Nelson, Jack Shouba, Gordon Tucker, Typesetting and DESKJN: Linda A. Masters Eric Ulaszek PRODUCTION: George D.Johnson Membership Cover Illustration Yearly membership includes a subscription to Original drawing by Nancy Hart Steiber of the ERIGENLV and the quarterly newsletter. Morton Arboretum, Lisle, Illinois. Harbinger. For more information, write to Nancy crossed the border to visit our neighbor to Illinois Native Plant Society the east when she visited Pinhook Bog to draw Forest Glen Preserve these plants: 20301 E. 900 North Road Cjprepedium acauk moccasin flower Westville, Illinois 61883 Sarracenia purpurea pitcher plant E-MAIL: ilinps(^aol.com Droscra intermedia narrow-leaved sundew This issue of Erigenia is dedicated to the memory of Floyd Swink (May 18, 1921 to August 2, 2000), beloved teacher and colleague of many INPS members, and a staff member of tliis journal. Editors, authors, and readers alike were the beneficiaries of Floyd's tireless verification of bibliographic material, nomenclature, and plant record documentation. All who knew liim were infected by his generous spirit and love of life. Our deep sense of loss at Floyd's passing is accompanied by the knowledge that liis inspiration and influence will condnue to be felt as long as there is a natural world to engage our minds, dcHght our senses, and awaken our wonder. Erigenia Number 18, October 2000 Table of Contents About Our Authors 2 The Correspondance of Soil T^-pes with Plant Commuruty T}'pes in natural Areas of Cook Count}' Illinois Thomas B. Simpson and Christiane Riy 3 The Genus Agrimonia (Rosaceae) in Illinois Genevieve]. Kline and Pan/ D. Sorensen 15 Effects of Annual Burning on Populations of Cassia Fasiculata (Fabaceae: Caesalpiniodeae) With a Review of Its Systematics and Biolog}' Don C. Gardner and Kenneth K Robertson 22 Structural Composidon and Species Richness Indices for Upland Forests of the Chicago Region Martin Bowles, MichaelJones, jenny McBnde, Tim Bell, and Christopher Dunn 30 Native Midwestern Plants for Golf Course Landscapes Tom Voigt 58 The Illinois Populations oi Phaeophjscia Leana, One of the Word's Rarest Lichens Geroiild Wilhelm, Einda Masters, andjodj Shimp 66 Some Notable Plant Records From East-Central and Southern Illinois Gordon C. Tucker 75 About Our Authors Tim Bell is an associate professor of botany at Chicago Kenneth R. Robertson is a plant systemanst uith the State Umversit}' and a research associate at The Monon Center for Biodiversity of the Illinois Natural Histor)- i-Vrboretum. His research includes demographic analysis and Survey. His interest in Cassia goes back to 1976, when he populanon ecology of endangered plant species prepared the treatment of subfamily Caesalpinoideae for populations. the Gcnenc Flora of the Southeastern United States. Marlin Bowles is Plant Consen^ation Biologist at The Jody Shimp has been a Heritage Biologist for the Illinois Monon Arboretum. His research includes restoranon Department of Natural Resources since 1996. He ecology of endangered and threatened species and the coordinates and is responsible for the management phy^osociology and management needs of native plant acti-vities on state owned nature preserves, and identifies communities. namral areas, including the protection of plant and animal endangered and threatened species. Jody graduated from Christopher Dunn IS Director of Research at The Morton Southern Illinois University at Carbondale in 1996 with a Arboretum. His research interests include landscape and Masters Degree in plant ecology. forest ecology and implicarions of habitat fragmentation. Thomas B. Simpson is an assistant professor in the Don Gardner is a retired dennst who has a long-standing Department of Geography and Environmental Studies at interest in praines. He has had pre\'ious articles in Nortiieastern Illinois University in Chicago, where he Erigenia, including two about prairie restoration on the teaches classes in land and resource management. His family farm in Ford County. He serves on the Economic research focuses on relationships between soil and plants, Entomology External Advison- Committee to the Illinois and water infiltration related to soil properties and land Natural Histor\- Survey. Michael Jones is a botanist with Chnstopher Burke Paul Sorensen organized the Iowa Chapter of the Nature Engineenng. His research interests include quannf\ing the Conservancy in 1963 while a graduate student at the classification, composiDon, and structure of nanve plant University- of Iowa. He is Curator of the Herbarium at communities. Northern Illinois University, and in June 2000 uill be retiring as a professor in plant taxonomy, field botany, Genevieve Kline, a volunteer in plant taxonomy with Paul American ecosystems, and biological conservation. Dr. Sorensen at Northern Illinois University, has been studying Sorensen is active as a board or comminee member in a the genus Agrimonia in North and Central America. With number of state conser\'ation organizations. Dr. Sorensen she has authored the treatment oi Agnmoma for the Flora of North America and an amcle on species Gordon C. Tucker, an associate professor at Eastern types. Illinois University, teaches courses in plant taxonomy, plant morphology, dendrology, bryology, and ethnobotany. He Linda Masters is a restoranon ecologist at Consen.'anon received his Ph.D. from Duke University and specializes in Design Forum, Inc. She is also active in a number of the taxonomy of grasses and sedges. He is currendy volunteer and community-based conservation prepannga treatmentof C)^cnc/and related genera for Flora organizanons. During her years as a research assistant at of North jAmenca. The Morton Arboretum, she participated in many field surveys, including the Lichen research chronicled in this Tom Voigt is an assistant professor and extension mrfgrass specialist at the University of Illinois Extension. His research interests include evaluations of turfgrass Jenny McBride is a research assistant at The Morton cultivars and their appropriate uses, low-maintenance Arboretum. Her interests include propaganon and turfgrasses, and aiternanve turfgrasses. In addinon. Dr. restoranon of endangered species and radical approaches to Voigt evaluates native grasses and forbs and exotic consen^anon biology. ital grasses for potential landscape use. Christiane Rey is a graduate smdent in Geography and Gerould Wilhelm, currendy a principal at Consen,-ation En\'ironmental Studies at Northeastern lUinois University. Design Forum, Inc., spent 22 years as a research field She is cofounder and art director of Seeding the Snou; a taxonormst at The Morton Arboretum, where he journal of women's writing and artwork that celebrates the established a lichen herbarium, which now holds about Midwestern landscape. Christiane is a volunteer steward 1 8,000 specimens, many of which were collected by Dr. with the Nordi Branch Restoration Project; she also teaches Wilhelhi on sur\'ey trips throughout the Midwest. French at Northwestern Universm-. ERIGENIA, Number 18, October 2000, pp. 3- ©2000, Illinois Native Plant Society The Correspondence of Soil Types \xaTH Pl.\nt CoMMUNi-n- T\tes IN Natur.\l Areas of Cook Counti', Illinois Thomas B. Simpson' and Christiane Rev ' Abstil^CT: Soil surveys often are used by ecological restoration managers to infer the nature of pre-European vegetation. This study examined the correlation of current vegetation types with soil senes at 145 locanons in 32 forest preserves and other natural areas in Cook County, Illinois. The objecnves of the study were to establish the association of soil senes types with plant commumr)- types and to evaluate the accuracy of NRCS soil survey mapping in naoiral areas. Mapped series were judged to be incorrect if there were major differences between the type profile in the soil survey and the field descnption based on (1) A hori2on depth, (2) presence or absence of the E horizon, (3) texture, (4) pH of the upper 50 cm, and (5) soil drainage class. The mapped soil series assignment was judged incorrect for 50.5% of the plots. The criteria that were most commonly in "error" were presence/absence of an E horizon (30.0% of plots) and depdi of the A horizon (19.6%). Dry-mesic woodland (6 soil series), mesic woodland (8 soil series), dr\'-mesic savanna (5 soil series), and mesic savanna (6 soil series) have the most diverse soil associates. The ability to predict community rvpe from a knowledge of mapped soil series is very limited. ". Introduction Morley: . most areas are wooded or pastured . ."; . and "A few areas of this soil are in native The importance of vegetation as a soil-forming factor hardwoods,