INDEX OF HOST TREES 
a) 
Alder (Alnus spp.)— Fir (Abies spp.)— 
bark or cambium, 131, 140. bark or cambium, 56, 109, 118, 120, 122, 123, 124, 125, 
leaves, 59, 68, 71, 73, 87, 92, 93. 134, 135, 136, 137, 139. 
twigs or branches, 35, 36. cones or seeds, 18, 19, 20, 21. 
wood, 132, 145, 146, 149, 151, 154. general, 4, 9, 173. 
Alpine fir. See Fir, alpine. needles, 67, 70, 75, 78, 79, 80, 81. 
Arbutus. See Madrona. roots, 27. 
Ash, Oregon (Frazinus oregona)— twigs, 28, 32, 36, 37, 38, 39. 
bark or cambium, 131. wood, 145, 146, 148, 149, 150, 152, 153, 154, 157, 158. 
leaves, 71, 73. Alpine (Abies lasiocarpa)— 
twigs or branches, 36. bark or cambium, 125, 139. 
wood, 154, 155, 160. cones or seeds, 22. 
Aspen (Populus tremuloides)— twigs or branches, 40. 
bark or cambium, 36, 137. Bristlecone (Abies venusta), cones or seeds, 22. 
leaves, 71, 73, 86, 87, 94. Douglas. See Douglas fir. 
twigs or branches, 36. lowland white (Abies grandis)— 
wood, 137, 147, 149, 154. bark or cambium, 125, 159. 
Bay. See Laurel. cones or seeds, 22. 
Bigcone spruce (Pseudotsuga macrocarpa), bark or roots, 125. 
cambium, 120, 134. twigs or branches, 47. 
Bigtree (Sequoia washingtoniana)— wood, 159. 
bark or cambium, 131, 137. Noble (Abies nobilis) — 
needles, 51. bark or cambium, 125. 
wood, 150. twigs or branches, 48. 
Birch (Betula spp.)— red (Abies magnifica), cones or seeds, 19, 20, 22. 
bark or cambium, 132. Shasta (Abies shastensis), cones or seeds, 19, 22. 
leaves, 73. silver (Abies amabilis), cones or seeds, 19, 22. 
twigs or branches, 36. white (Abies concolor)— 
wood, 146, 149. bark or cambium, 123, 124, 125, 159. 
Cedar— cones or seeds, 19, 20, 21, 22. 
bark or cambium, 56, 129, 130, 137. needles, 51, 71. 
general, 4. roots, 28, 125. 
leaves, 33, 50. twigs or branches, 40, 47, 48. 
twigs, 32, 36, 37, 42, 43, 47. wood, 146, 154, 159. 
wood, 146, 158, 158. Hemlock (Tsuga spp.)— 
Alaska (Chamaecyparis nootkatensis)— bark or cambium, 56, 102, 122, 128, 134, 135, 137. 
bark or cambium, 129, 131. cones or seeds, 22. 
twigs, 32. general, 4, 9. 
Incense (Libocedrus decurrens)— needles, 50, 59, 75, 80, 81, 173. 
bark or eambium, 129, 131, 137. twigs or branches, 32, 36, 37. 
cones or seeds, 20. wood, 145, 146, 154. 
leaves, 51, 52. mountain (Tsuga mertensiana)— 
twigs or branches, 32, 43. bark or cambium, 102, 128, 129. 
wood, 150. cones or seeds, 19, 22. 
Port Orford (Chamaecyparis lawsoniana)— wood, 147, 150. 
bark or cambium, 129, 131. western (Tsuga heterophylla)— 
cones or seeds, 20. bark or cambium, 120, 128, 129. 
western red (Thuja plicata)— losses, 7. 
bark or eambium, 129, 131, 137. needles, 48, 76, 80, 81, 91. 
leaves, 76. roots, 27. 
wood, 149, 150. wood, 159. 
Cottonwood. See Poplar. Juniper (Juniperus spp.)— 
Cypress (Cupressus spp.)— bark or cambium, 56, 131, 137. 
bark or cambium, 42, 56, 129, 130, 131, 137. cones or seeds, 54. 
cones or seeds, 20. twigs or branches, 37, 47, 54. 
general, 4. wood, 137 149. 
leaves, 33, 44, 91. Larch, western (Larix occidentalis)— 
twigs or branches, 32, 36, 37, 42, 48, 47, 51. bark or cambium, 41, 109, 115, 120, 129, 134, 135, 137, 
wood, 149, 150, 158. 140. 
Douglas fir (Pseudotsuga taxifolia)— general, 4. 
bark or cambium, 38, 41, 51, 56, 118, 119, 120, 122, needles, 48, 71, 80, 81, 91. 
124, 125, 128, 134, 136, 137, 139, 140. twigs or branches, 37, 48. 
cones or seeds, 18, 19, 22. Laurel, California (Umbellularia californica). 
losses, 7, 9, 173. leaves, 87. 
needles, 46, 47, 50, 52, 59, 62, 67, 70, 75, 76, 78, 79, 30, wood, 132, 154, 160. 
81. Locust (Robinia spp.)— 
roots, 27. bark or cambium, 140. 
twigs or branches, 32, 36, 37, 38, 47, 48. wood, 136, 155. : 
wood, 143, 145, 146, 147, 148, 149, 151, 152, 153, 154, | Lodgepole pine. See Pine, lodgepole. 
157, 159. Madrona (Arbutus menziesit)— 
Elm (Ulmus spp.)— leaves, 68, 73, 86, 87. 
leaves, 92, 94. wood, 147, 149, 154, 160. 
wood, 155. Mahogany, mountain (Cercocarpus spp.), bark or 
Engelmann spruce. See Spruce, Engelmann. cambium, 132. 
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