d i v e r s i t y , p h y l o g e n y , a n d e v o l u t i o n i n t h e monocotyledons e d i t e d b y s e b e r g , p e t e r s e n , b a r f o d & d a v i s a a r h u s u n i v e r s i t y p r e s s , d e n m a r k , 2 0 1 0 Phylogenetics of Stipeae (Poaceae: Pooideae) Based on Plastid and Nuclear DNA Sequences Konstantin Romaschenko,1 Paul M. Peterson,2 Robert J. Soreng,2 Núria Garcia-Jacas,3 and Alfonso Susanna3 1M. G. Kholodny Institute of Botany, Tereshchenkovska 2, 01601 Kiev, Ukraine 2Smithsonian Institution, Department of Botany MRC-166, National Museum of Natural History, P.O. Box 37012, Washington, District of Columbia 20013-7012 USA. 3Laboratory of Molecular Systematics, Botanic Institute of Barcelona (CSIC-ICUB), Pg. del Migdia, s.n., E08038 Barcelona, Spain Author for correspondence (
[email protected]) Abstract—The Stipeae tribe is a group of 400−600 grass species of worldwide distribution that are currently placed in 21 genera. The ‘needlegrasses’ are char- acterized by having single-flowered spikelets and stout, terminally-awned lem- mas. We conducted a molecular phylogenetic study of the Stipeae (including all genera except Anemanthele) using a total of 94 species (nine species were used as outgroups) based on five plastid DNA regions (trnK-5’matK, matK, trnHGUG-psbA, trnL5’-trnF, and ndhF) and a single nuclear DNA region (ITS).