Molecular Phylogenetics of Parasenegalia and Pseudosenegalia (Fabaceae: Mimosoideae) Author Miller, Joseph T. National Research Collections Australia, CSIRO National Facilities and Collections, GPO Box 1600, Canberra, ACT 2601, Australia, and Office of International Science and Engineering, National Science Foundation, Arlington, Virginia 22230, U. S. A. joe@acaciamulga.net Author Terra, Vanessa Universidade Federal de Uberlandia, Instituto de Ci ˆ encias Agr´ ˆ arias, Campus Monte Carmelo, Rodovia LMG 746, Monte Carmelo, Minas Gerais, Brazil Author Riggins, Chance Department of Crop Sciences, 260 ERML, University of Illinois, Urbana, Illinois 61801, U. S. A. Author Ebinger, John E. Emeritus Professor of Botany, Department of Biological Sciences, Eastern Illinois University Charleston, Illinois 61920, U. S. A. Author Seigler, David S. Department of Plant Biology, University of Illinois, Urbana, Illinois 61801, U. S. A. text Systematic Botany 2017 2017-08-25 42 3 465 - 469 464 469 journal article 10.1600/036364417X696140 fee35a76-81f6-4c95-9f2b-0ea67418acf0 KEY TO SENEGALIA TAXA 1. Prickles common on stem and usually the leaf petiole and rachis (prickles may rarely be absent or rare on individual specimens) .. .... Senegalia 1. Prickles absent onstem and leaf petioleand rachis.. ................................................................................ 2 2. Inflorescence a globose to subglobose head. .... ... ... .... ... ... ... .... ... ... .... ... .... ... ... ... .... ... ... .... ... ... .... ... ... 3 3. Flowers pedicellate; stamens consistently 200+; petiolar glands absent .. .... ... ... ... .... ... .... ... ... .... ... ... ... ... …. Acaciella 3. Flowers sessileto rarely subsessile; stamens lessthan 200; petiolar gland present .............................. Parasenegalia (in part) 2. Inflorescenceacylindrical spike.............................................................................................. 4 4. Leaflets small, 1.2 – 2.9 mmlongand 0.4 – 0.9 mm wide; petioles 0.5 – 13 mm long; spurbranches present.............................. 5 5. Perianth scarious; flowers 7.5 – 10.0 mm long, the corolla 3.3 – 6.0 mm long; Bolivia . ... ... .... ... ... .... ... ... ..... Pseudosenegalia 5. Perianth not scarious; flowers 5.5 – 7.5 mm long, the corolla 2 – 3 mm long; Mexico .. ... ... .... ... ... .... ... ... Mariosousa compacta 4. Leaflets mostly longer and wider; petioles most more than 15 mm long; spur branches absent... .... ... ... .... ... ... ... .... ... ..... 6 6. Fruit valves coriaceous; lenticels on twigs orange, orbicular to slightly elongated vertically, .............................. somemorethan 0.6 mmacross ............................................................... Parasenegalia (in part) 6. Fruit valves thinner, chartaceous; lenticels not orange, orbicular to slightly elongated horizontally, very ..... .......... ... rarelyto 0.6 mmacross ................................................................................ ... Mariosousa