122 
Journal of Agricultural Research 
Vol. XXVIII, No. 2 
Type Regions 
(31) Black grama and wire needlegrass_ 8 
(32) Black grama and tobosa grass (Hilaria mutica )_ 8 
(33) Tobosa grass_*-2, 7, 8 
(34) Galleta grass (Hilaria jamesii) _ 5, 6, 7, 8, 9 
(35) Crowfoot grama (Bouteloua rothrockii )_ 7, 8 
(36) Hilaria rigida - 15 
(37) Tussock grass (Sporobolus airoides) _ 2, 5, 6, 7, 8, 9, 15 
(38) Sacaton (Sporobolus ivrightii) _ 2, 6, 7, 8 
(39) Wheat bunchgrass (Agropyron spicatum) _ 10 
(40) Curly bunchgrass (Festuca ovina) _ 3, 10 
(41) Mixed mountain grass_ 3, 10 
(42) Arizona fescue (Festuca arizonica) - 7 
(43) Short-lived grass type_ 8 
(44) Giant wild rye (Elymus condensatus) __ 3, 9 
(45) Weed grass_ 12,13,14 
(46) Wet meadow_3, 4, 7,10, 11,12, 14 
(47) Dry meadow_3, 4, 10, 11, 12, 14 
(48) Mountain weed_3, 4, 10, 11, 12 
(49) Sagebrush (Artemisia tridentata) _3, 5, 6, 7, 9, 10, 11 
(50) Small sagebrush (Artemisia nova) -3, 5, 6, 9 
(51) Scab sagebrush (Artemisia rigida) __ 10 
(52) Hop-sage (Grayia spinosa) _5, 6, 9 
(53) Antelope-brush (Purshia tridentata) _ 3, 10 
(54) Shadscale (Atriplex confertifolia) ___5, 6,9 
(55) Salt sage (Atriplex corrugata and A. nuttallii) __ 5, 9 
(56) Little rabbitbrush (Chrysothamnus stenophyllus) _ 9 
(57) Rabbitbrush (Chrysothamnus graveolens) and tussock grass_ 2 
(58) Winter-fat (Eurotia lanata) _,_ 5, 6, 9 
(59) White sage (Kochia americana) __ 5, 9 
(60) Coleogyne (Coleogyne ramosissima) _ 9, 15 
(61) Greasewood (Sarcobatus vermiculatus) __5, 6, 8, 9 
(62) Greasewood, Shadscale_ 5, 6, 9 
(63) Greasewood, Salt sage A_5, 6, 9 
(64) Greasewood, Saltgrass (Distichlis spicata) _5, 6, 7, 9 
(65) Saltgrass__1, 2, 5, 6, 7, 8, 9, 13, 15 
(66) Pickleweed (Allenrolfea gcddentalis) _ 8, 9, 15 
(67) Seepweed (Dondia moquinii) __ 5,6,9 
(68) Samphire (Salicornia utahensis and S. rubra) __5, 6, 9 
(69) Creosotebush (Covillea glutinosa) _ 8, 15 
(70) Creosotebush and bur-sage (Franseria deltoidea , Franseria dumosa) 15 
(71) Encelia (Encelia farinosa) and California sagebrush_ 13, 15 
(72) Shrub buckwheat (Eriogonum fasciculatum) __ 9, 15 
(73) Desert-brush type: Creosotebush, ironwood (Olneya tesota) } mes- 
quite, paloverde (Parkinsoniamicrophylla ), and catsclaw (Acacia 
greggii) - 15 
(74) Creosotebush-desert grass_ 2, 8 
(75) Creosotebush and cacti (Opuntia species)_ 15 
(76) Creosotebush-ocotillo (Fouquieria splendens) _ 8, 15 
(77) Giant cactus (Carnegiea gigantea) and bur-sage_ 15 
(78) Mesquite__— 2,8,15 
(79) Mesquite and chamiso (Atriplex canescens) _ 8 
(80) Mesquite and mesquite grass_ 8 
(81) Parosela arborescens arid Lepidospartum squamatum ___ 15 
(82) Pluchea (Pluchea sericea) _ 15 
(83) Atriplex lentiformis _____ 15 
