Index and Glossary 



203 



DEH 



Dehiscent fruits (Lat. de^ apart ; hisco, 

 to gape). Fruits which break when 

 ripe, 136 



Delpkiniuin, 158 



Development, of buds, 60 ; of plumule, 

 40 ; of root, 25 



Dextrine (Lat. dexter, to the right). 

 British gum ; an altered form of starch, 

 so called because it turns the rays of 

 polarised light to the right, 7, 10 



Diadelphous (Gr. dis, twice ; adelphos, 

 a brotherhood). Stamens arranged in 

 two bundles, 114 



Dianthus, 161 



Diastase (Gr. dtasiasis, a division). A 

 ferment produced in germinating seeds 

 and which acts upon starch, 11 



Dichlamydeous (Gr. dis, twice ; 

 chlamus, a cloak). Flowers with both 

 calyx and corolla, 100 



Dichogamy (Gr. dicka, in two ; gamos, a 

 marriage). Plants where the pistil and 

 stamens are ripened at diflferent timesj 

 so that there must be cross fertilisation, 



Dichotomous(Gr. dicha, mtwo ; temno, 

 to cut). When branches divide con 

 tinually into two, 66, 98 



Dicotyledons (Gr. dis, twice ; kotuledon. 

 a hollow vessel). Plants with two cO' 

 tyledons in the embryo, 5, 153 



Dicotyledonous stem, 44, 153 ; leaves, 

 75. 153 ; root, 29, 153 , . 



Didynamous (Gr. dis, twice ; dunamis^ 

 power). Flowers with two long and 

 two short stamens, 115 



Digitalis^ 174 



Dill, 170 



Dimorphic (Gr. dis, twice ; ntorpke, 

 shape). Plants where the flowers 

 differ, some having short pistil and 

 long stamens, and others long pistil 

 and short stamens, 132 ^ 



Dioscious (Gr. dis, twice ; oikos, a 

 house). Stamens and pistils upon se- 

 parate plants, lOZ 



Discoid (Gr. diskos, a round plate ; eidos, 

 form). A term applied to pith when 

 it is broken up into a number of flat 

 plates, 45 



Distinguishing characters of roots and 

 stems, 40 



Dorema, 170 

 ~ Dorsifixed, 115 



Dotted cells, 18 



Double flowers. Flowers in which sta- 

 mens and pistils are converted into 

 petals, 134 



Dracmna, 185 



Dragon-tree, 53, 185 



Drupace^y a group of the Rosaceae, 165 



Drupe (Lat. drupa, an over-ripe olive). 

 Stone fruit, where the inner layer is 

 hard and stony, 140, 164, 165 



Duramen (Lat. durtts, hard). The inner, 

 generally hard, layers of wood, 46 



Dyer's-weed, 162 ' 



Dyer's Wood, 160 



ETiE 



PARTH-NUT, 168 

 Kchiuvt, 176 



Elecampane, 171 



Elements in plants, 34 



Elliptical cells, 16 ; leaves, yg 



Embryo (Gr. em for en, m ; brno, to 

 swell). The young plant in the seed, 4 



Embryo-cell. The cell of the ovule 

 which forms the embryo, 126 



Embryo-sac. The cell of the ovule in 

 which the' embryo-cell is formed, 122, 



^125 



Embryonic vesicles, see above. Embryo- 

 cells 



Endqcarp (Gr. endon, within ; karpos, 

 fruit). The inner layer of the fruit, 

 135 



Endogenous growth. Growth from 

 within, seen in roots, 40 ; in stems, 52 



Endogens (Gr. endon, within ; gennao, 

 to produce). Plants where the new 

 wood bundles are first of all produced 

 within the older ones ; monocotyle- 

 dons, 52 



Endophloeum(Gr. endon, •w\thva.;pkloios, 

 inner bark). The internal bark or 

 liber of dicotyledons, 43 



Endorhizal (Gr. endon, within ; rhiza, 

 root). , Applied to roots of monocoty- 

 ledons which branch before leaving the 

 seed, 29 



Endosmose fGr. endon, within ; osmos, 

 an impulse). The passage inwards ot 

 fluids through a membrane, 36 



Endosperm (Gr. endon, within ; sper- 

 ma, a seed). The cells formed within 

 the embryo-sac around the embryo, 5, 

 127 



Entomophilous (Gr. entoma, insects). 

 Flowers fertilised by insects, 130 



Epicarp (Gr. epi, upon ; karpos, fruit). 

 The outer layer of the fruit, 135 



Epidermis {Gr. epi, upon; dermis, the 

 skin). The outer skm of the plant, 29, 

 40, 71 

 Epigeal (Gr. epi, upon ; ge, the earth). 

 Seeds where, on germinating, the coty- 

 ledons rise above the soil, 29 

 Epigynous (Gr. epi, upon ; gune, wo- 

 man). Attachment of petals and sta- 

 mens above the pistil, 107, 115, 154 

 Epipetalous (Gr. epi, upon). Attach- 

 ment of stamens to petals, 115 

 Epiphloeum (Gr. epi, upon ; phloios, 

 bark). The outer bark of dicotyledons, 

 43 

 Epiphyllous (Gr. epi, upon ; pktillon, 

 leaf). Attachment of stamens upon 

 the divisions of the perianth, 115 

 Equitant (Lat. egnitans, riding). Term 

 used in vernation when two condupli- 

 cate leaves are bent round one another, 

 66 

 Ervwn, 164 

 Eryngittvi, 167, 169 



Etserio (Gr. hetairos, a companion). 

 Fruits forrtied by the aggregation of 

 several distinct ovaries, 142 



