INDEX TO PLANT HOSTS 



Acacia longifolia, 490. 

 Actinomeris squarrosa, 539. 

 Alder, 59, 103, 104, 106, no, 124, 



134, 414, 535, 538. 

 European, 158. 



Alfalfa, 520. 



Alnus serrulata, 535. 



Amaranth, 228. 



Amarantus, 228. 



Ambrosia artemisiaefolia, 453. 



Amelanchier, 65, 163. 



Amygdalus, 79. 



Antennaria plantagini folia, 778. 



Apple, 172, 184, 199, 360, 458, 459, 

 460, 461, 462, 46a, 404, 46s, 

 466, 491, 706, 707, 709, 7^6, 



m, 719, 750, 753, 758. 760. 



Aralia hispida, 721. 

 Arctium lappa, 745. 

 Asclepias, ^o. 

 Ash, 148. 



Mountain, 163. 

 Astqp, 539, 7I9, 721. 

 Austrian pine, 44. 

 Azalea, 124, 719. 



Baccharis halimifolia, 520, 539. 

 Barberry, 223. 

 Barley; 479, 523. 

 Basswood, 65. 

 Beans, wild, 228. 

 Beech, 172. 

 Beet, 203. 

 Betula, 79, 163. 



Birch, 57, 65, 115, 121, 134, 136, 163, 

 169, 242, 468, "jd^. 



black, 163, 259. 



white, 57. 136, 163, 169. 



yellow, 57. 

 Black birch, 163, 259. 



currant, 705, 706, 707. 



locust, 183. 



oak, 106, 136, 146, 167, 431, 521. 



spruce, 44. 

 Blackberry, 39, 160, 173, 435. 44i. 



515, 516, 534, 538, 719, 760. 

 Blackjack oak, 420, 430. 

 Burdock, 745. 

 Burr oak, 770. 



Button bush, 58. 

 Butternut, 31. 



Cabbage, 203. 

 Carex, 120. 

 Catalpa, 484. 

 Ceanothus, 680. 



americanus, 271, 704, 709. 

 Cedar, 513. 

 Chenopodium, 199, 228. 



hybridum, 461. 

 Cherry, ZT, 65, 709. 



sweet, 705, 706, 716, 719. 



wild, 79, 103, 163, 54& 

 Chestnut oak, 383, 434, 770. 

 Chionanthus, 147. 

 Chinese honeysuckle, 163. 

 Choke berry, 225. 

 Cicuta, 196. 



maculata, 262, 269, 313, 356. 

 357, 667, 705, 706, 720. 

 Gaytonia virginica, 776. 

 Clematis, 680. 

 Clover, 192, 520. 

 Comptonia asplenifoHa, 199. 

 Corn, 259. 293. 

 Cornus, 61. 

 Corylus, 39, 134. 

 Crataegus, 79, 157, 449- 

 Currant, 134. I73, 198, 285, 717, 719- 



black, 70s, 706, 707. 



red, 706. 



Day-lily, 198. 709. 739- 

 Dewberry, 160. 



wild, 439. 

 Dock, 47. 

 Dwarf chestnut oak, 770. 



Elder, 100, loi, 753- 



Elm, 32, 104, 157, 163, 172, 203. 



Erechtites heiracifolia, 685, 728, 



729. 

 Euphorbia corollata, 191. 

 European alder, 158. 



198. 



Fern, sweet, 

 Fir, 44, 171. 

 Fireweed, 728, 729. 



779 



