GENERAL INDEX 



231 



Centaurea nigra, 149. See also Hard- 

 head. 



C. scabiosa. See Greater Knapweed. 



Cerastium vulgatum. See Mouse-ear 

 Chickweed. 



Cereal crops, 54, 62, 99, 159-74. 



Chalk, intolerance of, 132, 133. 



land, weeds of, 124, 146. 



manuring, 51. 



soil, 117, 122, 127. 

 Chamomile, 16, 74, 76, 87, 115, 131, 



132, 157, 217. 



corn, 62, 129, 130, 151, 156, 167, 



207. 

 Characteristic weeds, 123, 134, 135, 



141, 146, 153. 

 Charlock, 4, n, 16, 17, 20, 28, 56, 57, 



58, 59, 60, 61, 62, 70, 76, 81, 82, 83, 



85, 87, 95, 104, 115, 136, 139, 146, 



147, 151, 156, 160, 162, 163, 173. 



See Brassica spp. 

 Chemical means, eradication by, 45, 



54-63, 66-70. 



Chenopodium album. See Fat Hen. 

 Chervil, wild, 17, 46, 64, 176, 179, 185, 



207. 



Chickweed, 4, 9, 18, 19, 28, 31, 46, 62, 

 85, 87, 112, 123, 126, 127, 151, 



158, 169, 183, 2OI, 224. 



mouse-ear, 16, 17, 19, 28, 87, 126, 



128, 156, 165, 168, 174, 181, 183, 



211. 



Chicory, 54, 117, igr, 211. 



Chloride of lime, 62. 



Chrysanthemum leucanthemum. See 



Dog Daisy. 



C. segetum. See Corn Marigold. 

 Cichorium intybus. See Chicgry. 

 Cicuta virosa. See Cowbane. 

 Cicutin, in. 



Cinquefoil, creeping, 38, 129, 198, 220. 

 Circcea lutetiana, 27. 

 Cirsium acaule, 65, 211. 

 C. arvense, 36, 179. See also Creeping 



Thistle. 

 C. lanceolatum, 23, 179. See also Spear 



Thistle. 



C. palustre. See Marsh Thistle. 

 Classification of soils, 122. 

 Ciay, 117, 120, 122, 127, 129. 

 Cleaning crops, 49, 161. 

 Cleavers, 52, 85, 116, 153, 157. See 



also Goosegrass. 

 Climbing weeds, 89. 

 Clover, 6, 50, 51, 53, 5 4, 55, 67, 75, 9 

 93, 95, 96, 98, in, 159, 166. 



suckling, 44. 



sweet, ii, 104. See also Melilotus. 

 Cocksfoot-, 26, 182, 185, 186. 



Coffee substitutes, 189, 191, 193, 202. 



Colchicine, 108. 

 lolchicnm autumnale, 38, 91, 107, 109 



(fig.), 178, 192, 212. See also 



Autumn Crocus and Meadow Saffron. 

 Colonisation of dumps by weeds, 12. 

 Coltsfoot, 18, 23, 24 (fig.), 34 (fig.), 37, 



53, 89, 120, 136, 137, 138, 158, 165, 



166, 202, 225. 

 Competition, aerial, 6, 50, 159. 



between plants, 5, 68, 117, 118, 119, 



120, 127, 132, 159, 160, 166. 174, 



181. 

 - root, 6. 

 Compost heap, 48. 

 Coniine, 106, 192. 



ionium maculatum. See Hemlock. 

 Conopodium denudatum. See Pignut. 

 Continuous cropping, effect of, 7, 9. 

 Convolvulus, 75T 

 C. arvensis. See Bindweed. 



major, 73. 

 Copper sulphate, 55, 56, 57, 59, 67. 



orm, 38. 

 Corn cockle, 4, 11, 104, 105, 106, 126, 



157, 186, 216. 



gromwell, 146, 147, 157, 195, 216. 



salad, narrow fruited, 73. 

 Cornflower, 58, 62. 

 Cosmopolitan weeds, 4, 128. 

 Cotton-grass, 177. 



ouch grass, 16, 17, 32 (fig.), 36, 48, 

 50, 53, 88, 120, 127, 136, 138, 156, 

 169, 174, 176, 179, 189, 206. 



onion, 39, 41 (fig.), 90, 208. 

 Cowbane, 104, no. See also Water 



Hemlock. 

 Cowslip. 181, 220. 



ow-wheat, 93, 112. 



Crane's-bill, 20, 214. See also Geran- 

 ium. 



small-flowered, 150, 157, 167. 



soft or dove's foot, 129, 130, 157, 



167, 172, 173, 174, 183, 214. 

 Creeping jenny, 178, 217. 



weeds, 88. 

 Crepis, 23. 



C. taraxacifolia, 178, 212. 



C. virens, 97, 212. 



Crocus, autumn, 104. See also Colchi 



cum autumnale. 

 Cudweed, 23, 150, 156, 167, 213. 

 - marsh, 141, 146, 157, 214. 

 Cultivation, weeds of, 10. 

 Cumarin, 115. 

 Cuscuta. See Dodder. 

 C. arvensis, 95. 

 C. epilinum, 94. 

 C. epithymum, 94. 

 C. europaa, 94, 212. 

 C. gronovii, 95. 



