Flowering Plants Pokeweeds, Four-o'clocks, Carpetweeds, Cacti,  Purslanes, Goosefoots, Pigweeds, and Pinks Robert H. Mohlenbrock   July 2001 304 pages |  278 illus. |  6 x 9 ISBN 0-8093-2380-X, $65.00s cloth Botany / Illinois   The Illustrated Flora of Illinois Robert H. Mohlenbrock provides a definitive account of the pokeweed, four-o'clock, carpetweed, cactus, purslane, goosefoot, pigweed, and pink families in Illinois.   Flowering Plants: Pokeweeds, Four-o’clocks, Carpetweeds, Cacti, Purslanes, Goosefoots, Pigweeds, and Pinks is the fifteenth volume of the Illustrated Flora of Illinois series and the ninth devoted to dicots, or plants that have two seed-leaves, or cotyledons, upon germination. Each of the 141 plants is beautifully illustrated by Paul W. Nelson.   Nelson shows the full habitat of the plant and close-ups of various vegetative and reproductive structures that are crucial for the identification of individual species. Each illustration includes detailed drawings of the flowers, fruits, and seeds of the plant covered. Mohlenbrock provides a complete description of each species as well as a discussion of the nomenclature and habitats, and his fifty-three years of experience enable him to present little-known diagnostic features for many species. Range maps show the county distribution of each species in Illinois. Mohlenbrock includes a statement giving the overall range of each species in the United States as well as a detailed key for the identification of the species.   Flowering Plants contains many plants whose obscure flower parts make them exceedingly difficult to identify. The close-up illustrations of these parts will aid the user of the book immensely in identification of the species. Included are several species previously unknown in Illinois.   New illustrations, which include detailed drawings of the flowers, fruits, and seeds are presented for each species covered in this book. Mohlenbrock’s fifty-three years of experience enable him to present little-known diagnostic features for many species.   Robert H. Mohlenbrock taught botany at Southern Illinois University Carbondale for thirty-four years, obtaining the title of Distinguished Professor. After his retirement in 1990, he joined Biotic Consultants as a senior scientist teaching wetland identification classes in twenty-six states to date.              Paul W. Nelson is a natural areas biologist for the Missouri Department of Natural Resources and the illustrator for the Missouri State Botanist.