6 3 8 
INDEX 
Devil-in-a-bush, Nigella 
Devil’s-bit- scabious, Scabiosa 
De Vries, H ., on variation, 22, 
23. 46 
Dewberry, Rubus 
Dew-leaves, 144 
Dextrorse, to the right 
Dhak, Butea 
Dhal, Cajanus 
Dhurra (India), millet 
Di- (Gr. pref.), two 
Diadelphous, 78 
Diagram, floral, 80 (fig-), 83 
Diaheliotropism, 36 
Dialypetalous, polypetalous 
Diandrous, with two stamens, 78 
Dicarpellary, 82 
Dichasial cyme, 63 
Dichlamydeous, 76 
Dichogamy, 96, 86, 98 
Dichotomy, 41 
Diclinism, 94 
Diclinous, 68 
Dicot., Dicotyledons 
Dicyclic, 70 
Didymous, twinned 
Didynamous, 78 
Diffuse, loosely spreading 
Digitate leaf, 51 
Dill, Peucedanum 
Dill., Dillenius 
Dimerous, 70 
Dimorphism, 29, 95 
Dioecious, 68 
Dioecism, 97 
Dioicus (Lat.), dioecious 
Diplecolobous, Cruciferae 
Diplochlam., diplochlamydeous, 
76 
Diplostemonous, 77, Oxalidaceae 
Diptera, 87 
Disc of flower, 71, 72 ; on tendrils, 
172 
Disc-flower, Compositae 
Discolor (Lat.), with two surfaces 
of unlike colour 
Discontinuous distribution, 146 
,, variation, 22, 118 
Discrete, separate 
Dissected, deeply divided 
Dissepiment, septum, 82 
Distal, furthest from axis 
Distichous, 47, 51 
Distribution, discontinuous, 146 
Distribution, geographical, 140, 3 ; 
of seeds, 109 seq., 174; of sexes, 
68; of species, 141 
Dithecous, with two thecae 
Dittander, Lepidiu??i latifolium L. 
Dittany, Dictamnus 
Divaricate, very divergent 
Divi-divi pods, Caesalpinia 
Division of labour, 20, 88 
Dock, Ru/nex 
Dodder, Cuscuta 
Dodge, 197 
Dog-daisy, Chrysanthemum 
Dog-rose, Rosa 
Dog’s tail grass, Cynosurus 
Dog’s tooth grass, Cynodon 
Dog- wood, Cor mis 
Domatia, 115, Fraxmus 
Domba, Calophyllum Inophyllum 
Dominant species, 179 
Dormant buds, 42 
Dorsal (leaf surface), 31, 49, 73 
Dorsal (suture), 82 
Dorsifixed anther, 78 
Dorsiventral leaf, 49 
Dorsiventrality, 31, 74, 163; (fir.), 
Podostemaceae 
Double coco-nut, Lodoicea 
Double flower, 22, 208 
Double-needles, Conifer ae 
Douglas- fir, Tsuga 
Downy (leaf), 53 
Dragendorff, 197 
Dragon’s blood, Dracaena 
Dragon-tree, Dracaena 
Drepanium, 64 (fig-), 65 
Drinks prepared from plants, 206 
Drip-tip, 143, 190, Acer , Begonia, 
Boehmeria , Ficus 
Drooping of young shoot, 157 
Dropwort, water-, Oenanthe 
Drude, O. , 140, 179; floral regions, 
190; zones of vegetation, 180 
Drugs, 202 
Drupe, 108 
Dry fruit, 107 
Dry season, 15 1, 154, 155 
