INDEX 



Abrus precatorius, sensitiveness to 



electricity of, 108 

 Acacias and ants, 36 

 Agrimony, seeds of, 61 

 Albumen in seed, 51 

 Algae and lichens, 41 

 Animals as seed distributors, 61, 



62 



Anthocyanin, 20 

 Antirrhinum, nectaries of, 69; 



and humble-bees, 75 

 Ants and plants, 33, 35 

 Araujia albens, dispersal of pollen 



of, 74 

 Aristolochia clematitis, insects 



and, 79 



Aristolochias, the odour of, 73 

 Aroids, growth of, 43 

 Arum dracunculus, odour of, 72 

 Assertive plants, i et seq. 

 Autumn, changes of, 22 

 Avebury, Lord, and bees, 71 ; on 



mimicry in plants, 93 

 Balsams, explosive seeds of, 63 

 Bean, climbing methods of, 4 ; 



experiment with seeds of, 54 

 Beech and fungus, 42 

 Bees, choice of blue flowers by, 



71 ; and crocus, 73 ; special 



arrangements in plants for, 75 ; 



and pea, 76 ; and sage, 76 ; 



and salvia, 77 ; and early 



purple orchis, 79 

 Beetles, as pollen carriers, 70 

 Begonias, instances of " double " 



flowers, 123 

 Betony, 95 

 Bitch and fungus, 42 ; seeds of, 



58 



Birds as seed-distributors, 62, 97 

 Bog Asphodel and insects, 99 

 Bougainvillea glabra, conspicu- 

 ous bracts of, 71, 121 

 Bracken fern, spreading habits 



of, 2 

 Bracts, coloured, as insect-lures, 



71, 121 



Brambles, climbing methods of, 



3 ; resourcefulness of, 8 

 Brier rose, prickles of, 88, 89 

 Broad Bean, nectaries of, 34 

 Brooklime and mimicry of mint, 



93 



Broomrape, 48 



Bryonies, climbing methods of, 3 

 Bryophyllum calycinum, 9 

 Bud scales, 24 



Bull's horn acacia, ants and, 35 

 Bulrush, distribution of seeds of, 



57 



Burdock, seeds of, 61 



Buttercup, nectaries of, 69 



Cacti, spines of, 87 ; and pro- 

 tective resemblance, 95 



Calyx, what it is, 117, 122 



Carpels, 117, 122 



Castor-oil plant, curious seed of, 

 96 



Catchfly, and insects, 99 



Cecropia palmata, ants and, 35, 37 



Cereus monstruosus and protective 

 resemblance, 95 



Chamomile, 93 



Chelonospermum, curious seeds of, 

 96 



Cherry, nectaries of, 34 ; evolu- 

 tion of carpels illustrated in, 

 126 



133 



