60 



HOUGH'S AMERICAN WOODS. 



Part. 



Oak, White II 



White-leaf X 



Yellow or Black IV 



Olea Europea VIII 



Olive VIII 



Wild V 



Opuntia Tuna VIII 



Orange V 



Osmanthus Americanus V 



Ostrya Virginica II 



Palm, California Fan VIII 



Palo Verde VI 



Mountain IX 



Papaw IV 



Parkinsonia microphylla IX 



Pear Ill 



Prickly VIII 



Pepp^ridge I 



Pepper- wood V, 106 VII 



Per sea palustris (pubescens}. . V 



Persimmon ... Ill 



Picea alba (Canadensis) IV 



Engelmanni X 



nigra (mariana) 



Sitchensis VI- 



Pine, Bastard V 



Bull, Western Yellow. . VI 



California Scrub VI 



California Swamp, Obis- 



po or Prickle-cone VII 



Coulter, Big-cone VII 



Digger, Gray-leaf VIII 



Fox-tail X 



Georgia, Long-leaf V 



Gray, Northern Scrub. . IV 



Jersey, Scrub IV 



Knob-cone IX 



Limber X 



Lowland Spruce V 



Monterey VIII 



Mountain White IX 



Parry, Mexican Nut X 



Pitch II 



Pond V 



Red, ' ' Norway " I 



Sand V 



Short-leaf, Yellow Ill 



Single-leaf Pinon VIII 



Slash V 



Sugar VI 



Torrey, Del Mar VIII 



White-bark X 



White II 



Oregon VI 



Pinus albicaulis X 



attenuata . IX 



Balfouricma X 



Banksiana (divaricatd) . IV 



clausa V 



contortd VI 



Coulteri VII 



Cubensis (heterophylla) V 



No. 



38 

 235 



93 

 186 

 18(5 

 112 

 184 

 103 

 112 



41 



200 

 128 

 204 



70 

 204 



57 



184 



9 



159 

 113 



61 

 100 

 247 



20 

 149 

 125 

 147 

 148 



170 

 169 

 198 

 246 

 124 



99 



98 

 222 

 243 

 123 

 199 

 221 

 245 



50 

 121 



19 

 122 



75 

 196 

 125 

 146 

 197 

 244 



49 

 150 

 244 

 222 

 246 



99 

 122 

 148 

 169 

 125 



Part. No. 



Pinus flexilis X 243 



glabra V 123 



inops ( Virginiana) IV 98 



Lainbertiana VI 146 



mitis (echinata) Ill 75 



n.onophylla VIII 196 



monticola IX 221 



inuricata VII 170 



palustris V 124 



quadrifolia (Parry and). X 245 



ponderosa VI 147 



radiata VIII 119 



resinosa I 19 



rigida II 50 



Sabiniana VIII 198 



serotina V 121 



strobus II 49 



Torrey ana VIII 197 



Planer-tree V 114 



Planera aquatica V 114 



Platanus occidentalis I 13 



racemosa VI 135 



Wrightii X 232 



Plum, Canada IV 81 



Pacific IX 207 



Poplar, Balsam, Tacamahac. . II 47 



Large-tooth I 18 



Lombardy Ill 



Necklace II 48 



Swamp or Downy IV 97 



Trembling ." Ill 72 



White IV 96 



Populus alba IV 96 



balsamifera II 47 



dilatata Ill 73 



Fremontii VIII 194 



grandidentata I 18 



heterophylla IV 97 



monilifera (deltoides) II 48 



tremuloides Ill 72 



tricliocarpa IX 218 



Prickly Ash, Sea Ash V 106 



Pride of India V 105 



Privet, Swamp V 111 



Prosopis juli flora VI 1 29 



odorata (pubescens).. IX 205 



Prunus Avium Ill 55 



Cerasus IV 82 



ilicifolia VII 156 



mollis IX 208 



nigra IV 



Pennsylvania Ill 



serotina II 29 



subcordata IX 207 



Pseudotsuga macrocarpa VII 



taxifolia VI 150 



Ptelea trifoliata IV 77 



Pyrus communis HI 



coronaria IV 83 



Mains II SO 



rivularis IX 209 



sambucifolia IV 84 



