JOURNAL OF THEARNOLD ARBORETUMVOL. 51 OCTOBER 1970 NUMBER 4THE GENERA OF MOLLUGINACEAE AND AIZOACEAE IN THE SOUTHEASTERN UNITED STATES 1 A. LINN BOGLE MOLLUGINACEAE Hutchinson, Fam. FI. P1. 1: 128. 1926, nom. cons. (CARPET-WEED FAMILY) Scarcely or non-succulent, annual [or perennial], glabrous or stellatelypubescent herbs [subshrubs, or shrubs], with mostly prostrate to erect,often much-branched stems from a short, narrow taproot. Leaves simple,narrow to broad, glabrous or pubescent, alternate, opposite, or falselywhorled, exstipulate [or stipulate]. Inflorescence basically cymose, axil-lary or terminal, diffuse or congested. Flowers sessile or pedicellate, regu-lar, perfect [or imperfect]. Perianth uniseriate, inconspicuous. Sepals(tepals) usually 5 [4], free [or slightly united basally], imbricate or quin-cuncial, persistent. Petals absent [or small, staminodial in origin]. Sta-mens 3-10[-20], alternating with the carpels when 3 or with the sepalswhen 5, hypogynous [or perigynous]; anthers 2-loculate, dehiscing bylongitudinal slits; filaments free, united basally [or fascicled when stamensnumerous]; pollen 3-colpate, or 3-5-zonicolporoidate. Gynoecium of 3-5 'Prepared for a generic flora of the southeastern United States, a project of theArnold Arboretum and the Gray Herbarium of Harvard University made possiblethrough the support of the National Science Foundation (Grant GB-6459X, principalinvestigator, Carroll E. Wood, Jr.). This treatment follows the format establishedin the first paper in the series (Jour. Arnold Arb. 39: 296-346. 1958) and continuedthrough those in volumes 40-50 (1959-1969). The area covered includes North andSouth Carolina, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, andLouisiana. The descriptions apply primarily to the plants of this area, with supple-mentary information in brackets. References which the author has not seen aremarked by an asterisk. I wish to thank Dr. Jack Fisher for living specimens of Sesuvium Portulacastrum,and Dr. John Thieret for specimens of Trianthema Portulacastrum. Thanks are alsodue to Miss Rachel A. Wheeler, who drew the illustrations of Mollugo, to MissVirginia Savage, who drew the remaining illustrations, and to Mrs. Nancy Dunkly,who checked the bibliography and typed the manuscript. I am particularly grateful to Dr. Wood for his help during the course of thiswork, and for his careful editing of the manuscript. Dr. John Thieret very kindlyread the manuscript and made several helpful comments.__
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