INDEX OF HOST TREES 



Alder {Alnus spp.)— 

 bark or cambium, 131, 140. 

 leaves, 69, 68, 71, 73, 87, 92, 93. 

 twis;s or branches, 35, 36. 

 wood, 132, 145, 146, 149, 151, 154. 

 Alpine fir. See Fir, alpine. 

 Arbutus. See Madrona. 

 Ash, Oregon (Fraxinus oregona)— 

 bark or cambium, 131. 

 leaves, 71, 73. 

 twigs or branches, 36. 

 wood, 154, 155, 160. 

 Aspen (Popnlus tremuloides)— 

 bark or cambium, 36, 137. 

 leaves, 71, 73, 86, 87, 94. 

 twigs or branches, 36. 

 wood, 137, 147, 149, 154. 

 Bay. See Laurel. 

 Bigcone spruce (Pseudofsuga macrocarpa) , bark or 



cambium, 120, 134. 

 Bigtree (Sequoia washingtoniana)— 

 bark or cambium, 131, 137. 

 needles, 51. 

 wood, 150. 

 Birch {Betuia spp.) — 

 bark or cambium, 132. 

 leaves, 73. 



twigs or branches, 36. 

 wood, 146, 149. 

 Cedar- 

 bark or cambium, 56, 129, 130, 137. 

 general, 4. 

 leaves, 33, 50. 

 twigs, 32, 36, 37, 42, 43, 47. 

 wood, 146, 153, 158. 



Alaska (Chamaecyparis nootkatensis)— 

 bark or cambium, 129, 131. 

 twigs, 32. 

 Incense (Libocedrus decurrens)— 

 bark or cambium, 129, 131, 137. 

 cones or seeds, 20. 

 leaves, 51, 52. 

 twigs or branches, 32, 43. 

 wood, 150. 

 Port Orford (Chamaecyparis lawsoniana)— 

 bark or cambium, 129, 131. 

 cones or seeds, 20. 

 western red (Thuja plicata) — 

 bark or cambium, 129, 131, 137. 

 leaves, 76. 

 wood, 149, 150. 

 Cottonwood. See Poplar. 

 Cypress (Cupressus spp.) — 

 bark or cambium, 42, 56, 129, 130, 131, 137. 

 cones or seeds, 20. 

 general, 4. 

 leaves 33 44 91 



twigs or branches, 32, 36, 37, 42, 43, 47, 51. 

 wood, 149, 150, 158. 

 Douglas fir (Pseudotsuga tazifolia) — 

 bark or cambium, 38, 41, 51, 56, 118, 119, 120, 122, 



124, 125, 128, 134, 136, 137, 139, 140. 

 cones or seeds, 18, 19, 22. 

 losses 7 9 173 

 needles,'46, 47, 50, 52, 59, 62, 67, 70, 75, 76, 78, 79, GO, 



81. 

 roots, 27. 



twigs or branches, 32, 36, 37, 38, 47, 48. 

 wood, 143, 145, 146, 147, 148, 149, 151, 152, 153, 154, 

 157, 159. 

 Elm ( Ulmus spp.)— 

 leaves, 92, 94. 

 wood, 155. 

 Engelmann spruce. -See Spruce, Engelmann. 



Fir (Abies spp.)— 

 bark or cambium, 56, 109, 118, 120, 122, 123, 124, 125- 



134, 135, 136, 137, 139. 

 cones or seeds, 18, 19, 20, 21. 

 general, 4, 9, 173. 

 needles, 67, 70, 75, 78, 79, 80, 81. 

 roots, 27. 



twigs, 28, 32, 36, 37, 38, 39. 



wood, 145, 146, 148, 149, 150, 152, 153, 154, 157, 158. 

 Alpine (Abies lasiocarpa) — 



bark or cambium, 125, 139. 



cones or seeds, 22. 



twigs or branches, 40. 

 Bristlecone (Abies venusta), cones or seeds, 22. 

 Douglas. See Douglas fir. 

 lowland white (Abies grandis) — 



bark or cambium, 125, 159. 



cones or seeds, 22. 



roots, 125. 



twigs or branches, 47. 



wood, 159. ■ . 



Noble (Abies nobilis) — 



bark or cambium, 125. 



twigs or branches, 48. 

 red (Abies magnifica), cones or seeds, 19, 20, 22. 

 Shasta (Abies shastensis) , cones or seeds, 19, 22. 

 silver (Abies amabilis), cones or seeds, 19, 22. 

 white (Abies concolor) — 



bark or cambium, 123, 124, 125, 159. 



cones or seeds, 19, 20, 21, 22. 



needles, 51, 71. 



roots, 28, 125. 



twigs or branches, 40, 47, 48. 



wood, 146, 154, 159. 

 Hemlock (Tsuga spp.)— 

 bark or cambium, 56, 102, 122, 128, 134, 135, 137. 

 cones or seeds, 22. 

 general, 4, 9. 



needles, 50, 59, 75, 80, 81, 173. 

 twigs or branches, 32, 36, 37. 

 wood, 145, 146, 154. 

 mountain (Tsuaa mertensiana)— 



bark or cambium, 102, 128, 129. 



cones or seeds, 19, 22. 



wood, 147, 150. 

 western (Tsuga heterophyUa)^ 



bark or cambimn, 120, 128, 129. 



I0SS6S 7 



needles,'48, 76, 80, 81, 91. 



roots, 27. 



wood, 159. 

 Juniper (Juniperus spp.) — 

 bark or cambium, 56, 131, 137. 

 cones or seeds, 54. 

 twigs or branches, 37, 47, 54. 

 wood, 137 149. 

 Larch, western (Larix occidentalis)— 

 bark or cambium, 41, 109, 115, 120, 129, 134, 135, 137, 



140. 

 general, 4. 



needles, 48, 71, 80, 81, 91. 

 twigs or branches. 37. 48. 

 Laurel, California (UmbeUularia calif ornica) . 

 leaves, 87. 

 wood, 132, 154, 160. 

 Locust (Robinia spp.) — 

 bark or cambium, 140. 

 wood, 136, 155. 

 Lodgepole pine. -See Pine, lodgepole. 

 Madrona (Arbutus menziesii)— 

 leaves, 68, 73, 86, 87. 

 wood, 147, 149, 154, 160. 

 Mahogany, mountain (Cercocarpus spp.), bark or 



cambium, 132. 



203 



