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, 463, 464, 46s, 

 466, 491, 706, 707, 709, 716, 



. 717, 719, 750, 753, 758, 760. 

 Aralia hispida, 721. 

 Arctium lappa, 745. 

 Asclepias, 680. 

 Ash, 148. 



Mountain, 163. 

 Aster, 539, 7I9, 72i. 

 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, T^. 



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, 441, 



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

 Blackjack oak, 420, 430. 

 Burdock, 745. 

 Burr oak, 770. 



779 



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, 548. 

 Chestnut oak, 383, 434, 77a 

 Chionanthus, 147. 

 Chinese honeysuckle, 163. 

 Choke berry, 225. 

 Cicuta, 196, 



maculata, 2^2, 269, 313, 556, 

 357, (^7, 705, 706, 720. 

 Claytonia v.irginica, Tj(i. 

 Clematis, 680. 

 Clover, 192, 520. _ 

 Comptonia asplenifolia, 199. 

 Corn, 259, 293. 

 Cornus, 61. 

 Corylus, 39, 134. 

 Crataegus, 79, 157, 449- 

 Currant, 134, 173, 198, 285, 717, 719. 



black, 705, 706, 707. 



red, 7oi5. 



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. 



Fern, sweet, 198. 

 Fir, 44, 171. 

 Fireweed, 728, 729. 



