I N 1) i: X 



Abelmoychus esciilontus^ See Okra. Page. 



Abnorinalities, relation to heredity in plant.s 19, 21, 22, 4G, 48, 52 



Accommodations, comparison with mutations 33-34, 42 



See also Environment. 



Allard, 11. A., on cotton hybrids 36, 52 



Alternative expression. See Expression, alternative. 



Ambari hemp. See Hibiscus cannabinus. 



Animals, development compared with plants !^, 28, 45-4(i, 48, 49, 50 



See also Insects. 



Anisophylly, application of term 40, 41-42, 44 



Anthophyll, application of term 44 



Anthoropic, application of term to Central American rubber tree 39 



Arizona, field of observations in dimorphism ] 5, 52 



Arropic, application of term 39 



Bamieh cotton. See Cotton, Egyptian, Bamieh. 



Banana, anthoropic character 39 



Beattie, W. R., on dimorphic features of okra 24 



Begonia, example of heredity 9 



Bolls, small, association with okra-leaved variations 31 



Bracts, external involucre of cotton, morphology 21-22, 44, 52 



Branches, classification 39-40, 44-45 



dimorphism, association with leaf type 10, 20-21, 52 



dimorphism, compared with mutations 33, 34 



functions of different types in cotton 13 



intermediate, in cotton, abnormal like hybrids 48 



type, influenced by external conditions 7, 43 



Breeding, relation of dimorphism 7-8, 9, 51 



See also Selection. 



Brenner, Wilh., on modifications of oak leaves 34 



Broussonetia, anisophylly and heterophylly 41-42, 44 



Bryophyllum, example of heredity 9 



Cacao, dimorphic leaves and branches 35, 40, 43-45, 47 



California, experiments with Egyptian cotton 19 



Calyx, abnormal structure, in cotton 22 



Castilla, dimoq^hic specialization 39, 40, 43, 44-^5 



Central American rubber tree. See Castilla. 



Citrus trifoliata, reduced leaves, hypophylly 44, 47 



Cladoptosis, definition 44 



Cladoropy, definition 39,44 



Classification, relation of parallelism 29-32 



See also Terminology. 



Clinomorphy, definition 40. 44 



Cluster mutations of cotton. See Cotton, cluster mutations. 



221 53 



