Synonym Index

(1) UA; Ruyle, Young
(2) NMSU; Allred
(3) UA; Gould
(4) Hitchcock
(5) Kearny & Pebbles

CRESTED WHEATGRASS
(1) Agropyron desertorum (Fisch. ex Link) J.A. Schult
(2) A. Cristatum (L.)
(2) A. fragile (Roth)
(3) Eremopyrum triticeum (Gaerth)

SIXWEEX THREEAWN pg. 9
(1) Aristida adscensionis (L.)
(3) A. bromioides (H.B.K.)
(4) A. fasciculata (Torr.)

SANTA RITA THREEAWN pg. 11
(1) Aristida californica (Thurber var.) glabrata (Vasey)
(4) A. californica var. major (Vasey)
(4) A. jonesii (Vasey)
(4) A. californica var. fugitiva (Vasey)

POVERTY THREEAWN pg. 13
(1) Aristida divaricata (Humb. & Bonpl. ex. Willd.)

RED THREEAWN pg. 15
(1) Aristida purpurea Nutt. var. longiseta
(4) A. curtiseta (Buckl.)
(5) A. purpurea var. rariflora (Hitchc.)
(5) A. longiseta rariflora Hitchc.

PURPLE THREEAWN pg. 17
(1) Aristida purpurea Nutt. var. purpurea (Steud.) Vasey
(4) A. purpurea var. hookeri (Trin. & Rupr.)
(4) A. purpurea capillarifolia Nutt.
(5) A. purpurea var. laxiflora (Merr).

PINE DROPSEED pg. 19
(1) Blepharoneuron tricholepis (Torr.) Nash
(4) Vilfa tricholepis (Torr.)
(4) Sporobolus tricholepis (Torr.)

CANE BEARDGRASS pg. 21
(1) Bothriochloa barbinodis (Lag.) Herter
(2) Andropogon barbinodis Lag.
(2) A. perforatus Fourn.
(5) A. saccharoides var. barbinodis Hack.

SIXWEEKS NEEDLE GRAMA pg. 23
(1) Bouteloua aristidoides (H.K.B.) Griseb.
(3) B. aristidoides (H.K.B.) Griseb. var. arizonica Jones

SIXWEEKS GRAMA pg. 25
(1) Bouteloua barbata Lag.
(2) Bouteloua barbata Lag. var. barbata
(3) B. polystachya [Benth.] Torr.
(5) B. micrantha Scribn. & Merr.

SPRUCETOP GRAMA pg. 27
(1) Bouteloua chondrosioides (H.K.B.) Benth. ex S. Wats.
(4) Dinebra chondrosioides (H.K.B.)
(4) B. ovata Lag.

SIDEOATS GRAMA pg. 29
(1) Bouteloua curtipendula (Michx.) Torr.
(2) B. curtipendula var. caespiosa (Gould & Kapadia)
(3) Chloris curtipendula (Michx.)
(4) Dinebra curtipendula (Beauv.)

BLACK GRAMA pg. 31
(1) Bouteloua eriopoda (Torr.) Torr.
(3) Chondrosium eriopodum Torr.
(4) B. brevifolia Buckl.

BLUE GRAMA pg. 33
(1) Bouteloua gracilis (H.B.K.) Lag. ex Griffiths
(3) Chondrosium gracile H.B.K.
(4) Actinochloa gracilis Willd.

HAIRY GRAMA pg. 35
(1) Bouteloua hirsuta Lag.
(4) B. hirta Lag.
(4) Chondrosium hirtum H.B.K.

SLENDER GRAMA pg. 37
(1) Bouteloua repens (H.B.K.) Scribn. & Merr.
(2) B. filiformis (Fourn.) Griffiths
(3) Atheropogon filiformis Fourn.
(4) B. juncifolia Vasey.

ROTHROCK GRAMA pg. 39
(1) Bouteloua rothrickii Vasey
(2) B. barbata Lag. var. rothrickii (Vasey) Gould
(3) B. polystachya (Benth.) Torr. var. major Vasey

FRINGED BROMEGRASS pg. 41
(1) Bromus ciliatus L.
(2) B. canadensis Michx.
(2) B. richardsonii Link.
(4) B. purgans var. longispicatus Hook

RED BROME (FOXTAIL, FOXTAIL CHESS) pg. 43
(1) Bromus rubens L.
(4) Festuca rubens Pers.
(4) B. scoparius var. rubens St. Amans.
(4) B. madritensis subsp. rubens Husnot.

CHEATGRASS pg. 45
(1) Bromus tectorum L.
(2) Anisantha tectorum (L.) Nevski
(4) B. setaceus Buckl.

FEATHER FINGERGRASS pg. 47
(1) Chloris virgata Swartz
(3) C. elegans H.B.K.
(4) Rabdochloa virgata Beaur.

BERMUDA GRASS pg. 49
(1) Cynodon dactylon (L.) Pers.
(3) Panicum dactylon L.
(4) Digitaria dactylon Scop.
(4) Agrostis bermudiana Tussac.

ORCHARDGRASS pg. 51
(1) Dactylis glomerata L.
(4) Bromus glomeratus Scop.
(4) Festuca glomerata All.

ARIZONA COTTONTOP pg. 53
(1) Digitaria californica (Benth.) Henr.
(2) Trichachne californica (Benthe.) Chase.
(3) Panicum californicum Benth.

DESERT SALTGRASS pg. 55
(1) Distichlis spicata (L.) Greene
(2) D. spicata (L.) Greene var. stricta (Torr.)
(3) Uniola stricta Torr.
(4) Briza spicata Lam.

BOTTLEBRUSHS QUIRRELTAIL pg. 57
(1) Hordeum hystrix Roth.
(1) Sitanion hystrix (Nutt.) J. G. Smith
(3) Hordeum gussonianum Parl.
(4) Aegilops hustrix Nutt.

WESTERN WHEATGRASS (BLUESTEM) pg. 59
(1) Elymus smithii (Rydb.) Gould
(2) Agropyron smithii (Rydb.)
(2) Elytrigia smithii (Rydb.) Nevski
(2) Pascopyrum smithii (Rydb.)

SLENDER WHEATGRASS pg. 61
(1) Elymus trachycaulus (Link) Gould ex Shinners
(2) Agropyron trachycaulum (Link) Malte
(2) A. pauciflorum (Keating) A.S. Hitchc.

WOOLLY BUNCHGRASS pg. 63
(1) Elyonurus barbiculmis Hack.
(4) Elyonurus barbiculmis parviflorus Scribn.

SPIKE PAPPUSGRASS pg. 65
(1) Enneapogon desvauxii P. Beauv.
(2) Pappophorum wrightii Wats
(4) P. mexicanum Griseb.

STINKGRASS pg. 67
(1) Eragrostis cilianensis (All.) Vign.-Lutati ex Janchen
(4) Briza eragrostis L.
(4) Poa cilianensis All.
(4) Eragrostis virletii Fourn.
(4) E. eragrostis MacM.

BOER LOVEGRASS pg. 69
(1) Eragrostis curvula (Schrad.) Nees var. conferta Nees.
(2) E. chloromelas Steud. (4) E. atrovirens Nees.

WEEPING LOVEGRASS pg. 71
(1) Eragrostis curvula (Schrad.) Nees. var. curvula
(4) Poa curvula Schrad.

PLAINS LOVEGRASS pg. 73
(1) Eragrostis intermedia Hitchc.
(5) E. lugens Nees.

LEHMANN LOVEGRASS pg. 75
(1) Eragrostis lehmanniana Nees.

WILMAN LOVEGRASS pg. 77
(1) Eragrostis superba Peyr.

FLUFFGRASS pg. 79
(1) Erioneuron pulchellum (H.B.K.) Tateoka
(2) Dasyochloa pulchella (H.B.K.) Steudel
(2) Tridens pulchellus (H.B.K.) A.S. Hitchc.

ARIZONA FESCUE pg. 81
(1) Festuca arizonica Vasey
(4) F. ovina var. arizonica Hack.
(4) F. vaseyana Hack.

WESTERN SHEEP FESCUE pg. 83
(1) Festuca calligera (Piper) Rydberg

TANGLEHEAD pg. 85
(1) Hereropogon contortus (L.) P. Beauv. ex Roem. & Schult.
(4) Andropogon contortus L.
(4) Sorghum contortum Kuntze
(4) Andropogon firmus Presl.

CURLY MESQUITE pg. 87
(1) Hilaria belangeri (Steud.) Nash.
(2) H. swallenii Cory
(3) Anthephora belangeri Steud.
(3) Hilaria belangeri (Steud.) Nash var. longifolia

JUNEGRASS pg. 89
(1) Koeleria macrantha (Ledeb.) J. A. Schult.
(2) K. cristata Nutt.
(2) K. nitida Nutt.
(3) Aira cristata L.
(4) Koeleria cristata var. nattali Wood.

GREEN SPRANGLETOP pg. 91
(1) Leptochloa dubia (H.B.K.) Nees.
(3) Chloris dubia H.B.K.
(4) Leptostachys dubia G. Meyer

WOLFTAIL pg. 93
(1) Lycurus setosus (Nutt.) C. Reeder
(2) L. phleoides H.B.K. var. glaucifolius Beal.
(2) L. phleoides H.B.K.
(4) Pleopogon setosum Nutt.

BULLGRASS pg. 95
(1) Muhlenbergia emersleyi Vasey
(4) M. vaseyana Scribn.
(4) Epicampes emersleyi Hitch.

MOUNTAIN MUHLY pg. 97
(1) Muhlenbergia montana (Nutt.) Hitchc.
(3) Calycondon montanum Nutt.

BUSH MUHLY (HOE GRASS) pg. 99
(1) Muhlenbergia porteri Scribn. ex Beal
(4) M. texana Thurb.
(4) Podosaemum porteri Bush

DEERGRASS pg. 101
(1) Muhlenbergia rigens (Benth.) Hitchc.
(2) M. mundula I.M. Johnston
(3) Epicampes rigens Benth.
(4) Vilfa rigens Thurb.

RING MUHLY (RING GRASS) pg. 103
(1) Muhlenbergia torreyi (Kunth.) Hitchc. ex Bush
(3) Agrostis torreyi Kunth.
(4) A. caespitosa Torr.

SPIKE MUHLY pg. 105
(1) Muhlenbergia wrightii Vasey
(4) M. wrightii var. ammulata Vasey
(4) M. coloradensis Mez.

BLUE PANIC pg. 107
(1) Panicum antidotale Retz.

HALL’S PANIC GRASS pg. 109
(1) Panicum hallii Vasey (4) P. virletii Fourn.

VINE MESQUITE pg. 111
(1) Panicum obtusum H.B.K.
(4) Brachiaria obtusa Nash.
(4) Panicum polyonoides C. Muell.

PAPPUSGRASS pg. 113
(1) Papphorum vaginatum Buckl.
(2) P. mucronulatum
(4) P. apertum Munro
(4) P. apertum var. vaginatum Scribn.

GALLETA pg. 115
(1) Pleuraphis jamesii Torr.
(2) Hilaria jamesii (Torr.) (Benth.)
(4) H. sericea Benth.

TOBOSA pg. 117
(1) Pleuraphis mutica Buckl.
(2) Hilaria mutica (Buckl.) Benth.

BIG GALLETA pg. 119
(1) Pleuraphis rigida Thurb.
(2) Hilaria rigida (Thurb.) Benth. ex Scribn

MUTTONGRASS pg. 121
(1) Poa fendleriana (Steud.) Vasey
(4) Eragrostis fendleriana Steud.
(4) Panicularia fendleriana Kuntze
(4) Poa fendleriana arizonica Williams

KENTUCKY BLUEGRASS pg. 123
(1) Poa pratensis L.
(4) Poa viridis Schreb.
(4) Paneion pratense Lunell

TUMBLEGRASS pg. 125
(1) Schedonnardus paniculatus (Nutt.) Trel.
(3) Lepturus paniculatus Nutt.
(4) Rottboellia paniculata Spreng.
(4) Spirochloe paniculata Lunell

TEXAS BLUESTEM (TEXAS BEARDGRASS) pg. 127
(1) Schizachyrium cirratum (Hack.) Woot. & Standl.
(2) Andropogon cirratus Hack.
(4) Sorgum cirratum Kuntze

LITTLE BLUESTEM pg. 129
(1) Schizachyrium scoparium (Michx.) Nash.
(2) Andropogon scoparius Michx., A.S. fequens (C.E. Hubb.) Gould
(4) Sorghum scoparium Kuntze
(4) Pollinia scoparia Spreng.

BURROGRASS pg. 131
(1) Scleropogon brevifolius Phil.
(2) S. longisetus Beetle
(4) Tricuspis monstra Munro

PLAINS BRISTLEGRASS pg. 133
(1) Setaria leucopila (Scribner & Merrill) K. Schum.
(2) S. macrostachya H.B.K.
(4) Chamaeraphis setosa var. macrostachya Kuntze
(4) Chaetochloa leucopila Scribn. & Merr.

JOHNSON GRASS pg. 135
(1) Sorghum halepense (L.) Pers.
(3) Holcus halepensis L.
(4) Blumerbachia halepensis Koel.
(4) Andropogon sorghum subsp. halepensis Hack.

ALKALI SACATON pg. 137
(1) Sporobolus airoides (Torr.) Torr.
(4) Agrostis airoides Torr.
(4) Vilfa airoides Trin.

SAND DROPSEED pg. 139
(1) Sporobolus cryptandrus (Torr.) A. Gray
(3) Agrostis cryptandrus Torr.
(4) Vilfa cryptandrus Torr.

SACATON pg. 141
(1) Sporobolus wrightii Munro ex Scribn.
(2) S. airoides var. wrightii (Monro) Gould

NEEDLE AND THREAD GRASS pg. 143
(1) Stipa comata Trin. & Rupr.
(2) Hesperostipa c. (Trin. & Rupr.) Barkw.

INDIAN RICEGRASS pg. 145
(1) Stipa hymenoides Roem. & Schult.
(2) Oryzopsis hymenoides (Roem. & Schult.)
(4) Stipa membranacea Pursh.

CRINKLE-AWN pg. 147
(1) Trachypogon secundus (J. Presl.) Scribn.
(4) Heteropogon secundus Presl.
(4) Trachypogon plumosus var. montufari subvar. secundus Hack.

SLIM TRIDENS pg. 149
(1) Tridens muticus (Torr.) Nash
(3) Tricuspis mutica Torr.

SPIKE TRISETUM pg. 151
(1) Trisetum spicatum (L.) Richt.
(3) Aira spicata L.
(4) Aira subspicata L.