WOOD & WEAVER, GENTIANACEAE THE GENERA OF GENTIANACEAE IN THE SOUTHEASTERN UNITED STATES' CARROLL E. WOOD. JR., AND RICHARD E. WEAVER, JR. GENTIANACEAE A. L. de Jussieu, Gen. Pl. 141. 1789, "Gentianae." nom. cons. (GENTIAN FAMILY) Mostly glabrous annual, biennial, or perennial herbs [vines, shrubs, oreven small trees], rarely parasitic or saprophytic. Leaves simple. opposite `Prepared for the Generic Flora of the Southeastern United States, a project of the ArnoldArboretum currently made possible through the support of the National Science Founda-tion, under Grant DEB-81-11520 (Carroll E. Wood, Jr., and Norton G. Miller, principalinvestigators). This treatment, the 95th in the series, follows the format established in thefirst paper (Jour. Arnold Arb. 39: 296-346. 1958) and continued to the present. The areacovered by the Generic Flora includes North and South Carolina, Georgia, Florida. Ten-nessee, Alabama, Mississippi, Arkansas, and Louisiana. The descriptions are based pri-marily on the plants of this area, with information about extraregional members of a familyor genus in brackets [ ]. References the authors have not verified are marked with anasterisk. It is difficult to know where to begin to acknowledge the help of the many friends whohave contributed to the preparation of this paper, for there are so many. If we can beforgiven for using a botanical figure of speech, they are all the root sources for this par-ticular interpretation of the Gentianaceae. Although he may be appalled by this designa-tion, the taproot of it all is Charles W. James, whose study, some 25 years ago in the veryearly years of the Generic Flora, produced a preliminary treatment of this family. Muchinformation has accumulated since then. It has been possible to produce illustrations, towrite and rewrite treatments of the genera, to do field work, and most gratifyingly, to seeothers going on to solve various taxonomic problems. In presenting this work, it has beennecessary to omit a huge number of references that are connected primarily with the chem-istry of compounds found in various species of Gentiana and of related genera of Europeor Asia. We are most immediately indebted to Barbara Nimblett, Margaret van Montfrans, Nor-ton Miller, and George Rogers for their multifarious help in the preparation and reviewof this manuscript and for various modifications of both manuscript and illustrations. Weare also much indebted to Elizabeth Schmidt and Stephen Spongberg for their careful re-views and editorial help. The initials on the illustrations will identify the artists: DHM, Dorothy H. Marsh, whowas our first illustrator and who, through her special abilities, set the general style of thedrawings: VS, Virginia Savage, of the thoroughly cultivated Savages of South Carolina:and KS, Karen Stoutsenberger, who worked at the Arboretum on the Generic Flora projectfor seven years, producing during that time more illustrations than any other artist. The contributors of plant materials (we hope that we have not inadvertently omittedanyone) are George Avery, R. B. Channell. George R. Cooley, the late Richard J. Eaton.R. A. Howard, Robert Kral, Norton Miller, Kenneth R. Robertson, the late H. F L. Rock,H. K. Svenson, and ourselves. Of course, the collections (both herbarium and library) ofthe Arnold Arboretum and the Gray Herbarium have been indispensable.� President and Fellows of Harvard College, 1982.Journal of the Arnold Arboretum 63: 441-487. October. 1982.