204 
Oak—Continued. 
groups—Continued. 
shinnery (shin), 20, 23-24. 
white (sec. Leucobaianus), 20, 2i- 
Havyard (Q. havardii), 23. 
hedgehog, 19. 
huekleberry (Q. vaccinifolia), 24. 
Kello g 25. 
live, 20; 22, 50, 228. 
maul, 
Mexican “white, 24, 
netleaf (Q. reticulata), 24, 
New Mexican (Q. novomexicana), 21—22. 
Oregon chestnut, 24. 
Oregon white, 23 
poison {toxicodendron diversilobum), 21, 
6, 
red, Pie 24, 25. 
Rocky Mountain shin, 23. 
Rocky Mountain white, 21. 
Sadler (Q. sadleriana), 24, 
serub, 111, 144, 158. 
shin, 23, 
shinnery, 23. 
shrub live (Q. turbinella), 23. 
tan. See Tanoak. 
tanbark, 20. 
Utah (Q. utahensis), 21—22. 
Vreeland (Q. vreelandii), 21—22. 
wavyleaf (Q. undulata), 23-24, 
Wilcox (Q. wilcoxii), 24. 
Oakley, R. A., 189. 
Oats, browse species involved in rust of, 
iey 
Oceanspray (Sericotheca discolor ariaefolia), 
4 3 ) > 
Ocotiilo (Fouquieria splendens), 115. 
family, 115. 
Odors (browse plants), 41, 67, 70, 71, 83, 
87, 89, 91, 105, 107, Titel 116, 126, "427, 
130, 137 138, 139, "140, "141, 166. 
Odostemon (hollygrape), 36-37, 279, 180. 
aquifolium (Oregon h.), 37. 
fremontii (Frémont h.), 37 
haematocarpus (red h. ie Sie 
repens (creeping h.), 37. 
Oil(s), cedar, 11, 
jojoba, 94, 
resinous, 55. 
wintergreen, 128. 
Oleaceae, 118, 137-138. 
7 Olea oleaster (wild olive; oleaster), 118. 
yeuropaea (common olive), 118. 
Oleaster. See Olive, wild. 
family. See Silverberry family. 
Oleoresins, 10. 
+ Olive (Olea), 118, 
ycommon (0. europaea), 118. 
family, 118, 137-138. 
+wild (O. oleaster), 118, 119. 
Olneya tesota Ce oeey: 86-87, 179. 
Olsen, Orange A., 
Opulaster (ninebark), 7 , 57, 180. 
malvaceus (mallow MENS Bie 
paucifiorus, 57. 
ope ia (cholias; pricklypears), 116-118, 179, 
180. 
a_borescens (cane-cactus), 117. 
dillei, 116. 
engelmanni (Engelmann  pricklypear), 
TAGE ASE 
imbricata. See O. arborescens. 
sphaerocarpa, 116. 
treleasei, 116. 
+Orach, garden (Atriplex hortensis), 27 
Oregon grape. See Hollygrape, Oregon. 
Oregon jay, 65. 
Oreobatus, 58. 
Ornamentals, browse species valuable as, 11, 
36, 37, 39, 40, 41, 46, 57, 58, 59, 66, 70, 
73 80, 83, 85, 86, ST 88, 91, 92; 93, 97, 
100, 104, "107, 114, 115, 118, 120, "421° 
; 3 ‘ 127° eal, 136, 137, 138, 
139, 140, 141, 142, 143? 144; 145, 146, 
148, 149, 150, 152, 153, 156, 165, 166, 
170, 179-180. 
IN DEX 
Osikakamuk, 164. 
Osmaronia cerasiformis (csoberry), 7 
Osoberry (Osmaronia coranstormas), 70. 
Overgrazed range, 5, 31, a py: 39, 50, 60, 
66, 67, 68, 69, 72, 76, 85, 86, "10 08, 
109, 114, 115, 120, 144, So 55, 157, 158; 
160, 161, 163, 164; 170, 171, 172. 
Overgrazing, indicators of, "39, 60, 109, 157, 
GIGS au O age 
resistance to, 170. 
Overstocking, 126, 158, 170. 
Oxalates, 35. 
Oxycoccus; O. macrocarpus (cranberry), 133, 
Oxalic acid, 35. 
intermedius, 136. 
oxzycoccus, 136. 
oxycoccus intermedius, 136. 
palustris (small e.), 136. 
palustris intermedius (western c.), 136. 
Oxytenia, 8, 155. 
acerosa, 155. 
Pachistima, 97, 98. 
myrsinites (myrtle boxleaf), 98. 
Pachypsylla, 25. 
Pachystima. See sda T one 
Pacific Coast region, 23, 64, 65, 70, 
86, 89, 98, 100, 701, oS 74 129, 130, 
131, 133, 135, 141, 147, 152. 
Padus, 66. 
demissa, 68. 
melanocarpa, 67. 
Palatability, table of, 5. 
Palmer, Hdward, 154, 155, 164, 166. 
Fan Lawrence Ji, EDS 18, 19, 131, 136, 
Palmilla, 14. 
Palo amarillo, 36, 55. 
Paloblanco (Celtis reticulata), 3 25. 
(Zizyphus lycioides), 113. 
Palo Christo, 80 
Palo de hierro, 87. 
Paloverde (Gercidiaam): 
(Canotia holacan tay "116. 
border (C. floridum), 80, 
dwarf, 
littleleaf (C. micron a 80. 
Texas (C. texanum), 8 
Pammel, L. H., 11, 37, 35° 67, 73, 84, 85, 
86, 89, 104, 105, "107, 113, 118, 422, "131, 
8, 79, 80. 
133, 142, 143, 145, 146, 147, 150, 157, 
158, 166, 185. 
Papilionaceae. See Fabaceae. 
Parkinsonia, 8, 79, 80. 
aculeata (Jerusalem-thorn), 79. 
florida, 
microphy lla, 80. 
texana, 80. 
torreyana, 80. 
Parosela (peabush), 7, 83-85, 86, 180. 
amoena (desertbeauty), 85. 
argyraea (silver p.), 85 
formosa (feather p.), 85. 
frutescens (black p.), 85. 
jamesii (James p.), 85. 
johnsoni_(desertbeauty), 85. 
parryi (Parry D.), 
pogonanthera (bearded p.), 85d. 
spinosa (iree-pea), 85. 
Parthenium, 179. 
argentatum (guayule), 165, 
incanum (mariola), 165. 
Parthenocissus vitacea (thicket creeper), 114. 
Pasania densifiora, 19, % 
densiflora echinoides, 19. 
Pastures, 60, 89, | 
Payonia, Wright (Malache lasiopetala), 114. 
lasiopetala, 114. 
Pea family. See Bean family. 
shrubby, 85. 
wild, 69. 
Peabush (Parosela spp.), 7, 83-85. 
bearded (P. pogonanthera), 85. 
black (P. frutescens), 85. 
ee ee es 
a ieee 
