SMITHSONIAN INSTITUTION Contributions from the United States National Herbarium Volume 48: 1-730 Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae m3 - :' ••' -: l o ; ! d i if 'J i :::.';v., ,;r)r:. M>;;-irii1aiS Robert J. Sbfehg, Paul M. Peterson, Gerrit Davidse, Emmet J. Judziewicz, Fernando O. Zuloaga, Tarciso S. Filgueiras, and Osvaldo Morrone ChiefEditor: Robert J. Soreng SchnlttspahnstraBe 10 D.64287 Darmstadt Department of Systematic Biology - Botany National Museum of Natural History Washington, DC 2003 CONTENTS INTRODUCTION 9 MATERIALS AND METHODS 9 GUIDE TO USING THE CATALOGUE OF NEW WORLD GRASSES 10 Nomenclature 10 Taxonomy 10 Synonymy 10 Levels of Acceptance and Status 10 Distribution 11 Abbreviations for Distribution by Country or Caribbean Region 11 Abbreviations Used in Subheadings 11 Abbreviations and Codes Used in NOTES 11 Abbreviations Used for Types 11 Determination of Types 12 Consulted Literature and Also Accepted By 12 Index to Catalogue of New World Grasses, Volumes I-IV 12 A CLASSIFICATION OF NEW WORLD POACEAE, SUBFAMILY: POOIDEAE. 12 ACKNOWLEDGMENTS 14 CATALOGUE OF NEW WORLD GRASSES: IV 15 Achnatherum 15 xAchnella 18 Aciachne 19 Aegilops 20 xAgropogon 25 Agropyron 25 Agrostis 42 Aira 89 Alopecurus 97 Ammophila 107 Ampelodesmos 108 Amphibromus 108 Anatherostipa 109 Anthochloa 111 Anthoxanthum 111 Apera 115 Aphanelytrum 115 Arctagrostis 115 xArctodupontia 117 Arctophila 118 Arrhenatherum 119 Austrostipa 126 Avena 126 Avenula 139 Becktnannia 140 Brachyelytrum 142 Brachypodium 143 Briza 146 Bromidium 152 Bromus 154 Calamagrostis 191 xCalammophila 227 Calotheca 227 Catabrosa '. 228 Catapodium 230 Chascolytrum 233 Cinna 234 Coleanthus 237 Corynephorus 239 Cutandia 241 Cynosurus 242 Dactylis ..242 Dasypyrum 245 Deschampsia 245 Desmazeria 256 Diarrhena 269 Dichelachne 270 Dielsiochloa 270 Dissanthelium 271 xDupoa 274 Dupontia 274 xElyhordeum :..277 xElyleymus 278 Elymus 279 Eremopoa 310 Eremopyrum 311 Erianthecium 312 Festuca 312 Gastridium 369 Gaudinia 370 Glyceria 371 Graphephorum 380 Gymnachne 381 Hainardia 381 Helictotrichon 382 Hesperostipa 383 Holcus 387 Hordeum 389 Jarava 402 Koeleria 409 Lachnagrostis 419 Lagurus 420 Lamarckia 420 Leptophyllochloa 421 Leucopoa 422 xLeydeum 422 Leymus 422 Limnodea 426 Lolium 426 Macrochloa 432 Megalachne 432 Melica 432 Metcalfia 450 Mibora 450 Milium 451 Nardus 454 Nassella 455 Ortachne 468 Oryzopsis 469 Parapholis 477 Pascopyrum 477 Peyritschia 478 Phalaris 479 Phippsia 489 Phleum 491 Piptatherum 494 Piptochaetium .495 Pleuropogon 504 Poa 505 Podagrostis 581 Podophorus 581 Poidium 582 Polypogon 583 Psathyrostachys 589 xPseudelymus 589 Pseudoroegneria 590 Ptilagrostis 590 Puccinellia 591 xPucciphippsia 601 Relchela 602 Rhombolytrum : 602 Rostraria 604 xSchedolium 605 Schedonorus 605 Schizachne 607 Sclerochloa 608 Scolochloa 609 Scribneria 609 Secale 610 ^Sesleria 611 Sphenopholis 614 Stipa 617 Taeniatherum 652 Thinopyrum 653 Torreyochloa 655 Tovarochloa 656 Triniochloa 658 Trisetum 659 xTriticosecale 676 Triticum .- ..676 Vahlodea 687 Ventenata 688 Vulpia 690 BIBLIOGRAPHY 696 APPENDIX I. Three new subtribes in Poaceae, subfamily Pooideae, tribe Poeae.... 721 INDEX TO CATALOGUE OF NEW WORLD GRASSES, VOLUMES I-IV 722.