166 



INDEX AND GLOSSARY 



Conifers, the family of Pines and 

 Firs, 5 



Convolvulus Soldanella, the Con- 

 volvulus of sandy shores, 129 



Cord Moss [Fuuaria hygrome- 

 trica), 114 



Corolla, collective name for the 

 petals of flowers, 53 ; origin 

 of, 64 



Cotton grass {Eriophorum), a 

 genus of Sedges, 140 



Couch grass {Triticum repens), 

 129 



Creeping Willow {Salix repens), 

 140, (Fig. 27) 149 



Cross-fertilisatiou, 91 



Cross-pollination, 92, 160 



Crystals, protection by, 90 



Culbin sands, 138 



Ct/athea dealbata, a large Tree 

 "Fern, 107 



Cycadeoidea, a Mesozoic fossil; 

 flower of, 65 



Cycads, an ancient family of 

 Fern-like plants, bearing naked 

 seeds : now only sparsely re- 

 presented, 63, 78 



Cycle of Life, the whole series of 

 events, sometimes varied and 

 complex, comprised in the life 

 of the individual, 22, 44 



Cytoplasm, the protoplasmic body 

 of the cell, exclusive of the nu- 

 cleus and plastids, 72 



Danaea, a genus of Ferns of an- 

 cient type, 107 



Darwin, 82, 91, 92, 105, 106, 114, 

 116 



Depth, distribution of Algae in 

 the sea with regard to, 13 



Diatoms, minute unicellular Al- 

 gae, 113 



Disc of attachment, as seen at 

 base of many Algae, 17, 18 



Distribution, agencies for effect- 

 ing, 98, 113, 161 ; by animals, 

 99, 113 



Dock {Rumex), 89 



Dunes, 122, 130, (Fig. 22) 131, 

 146 



Dune-Flora, 134, 138, 140 



Egg-apparatus, a group of three 

 cells, one of which is the egg 

 itself, attached to the apical end 

 of the embryo-sac in the Higher 

 Flowering Plants, 72, (Fig. 15) 

 73 



Egg-cell or ovum, the female cell 

 which is to be fertilised, 42, 43, 

 73, 94 



Elimination of weaklings, 118 



Embryo, the product of fertilisa- 

 tion, 42 



Embryo-sac, a large cell (mega- 

 spore) embedded in the tissue 

 of the ovule of the seed-bearing 

 plants, in which the ovum and 

 ultimately the embryo are pro- 

 duced, 72, (Fig. 15) 73 



Encysted cell, 22, 24, 157 



Encysted state, secondary, 27 



Encystment, the surroundmg of 

 the protoplasm by a covering 

 cell-wall, 84, 86, 99, 157 



Enteromorplia, a genus of green 

 Algae, 18 



Ernst, A., 113 



Evolutionary tree, blind branches 

 of, 28 



Explosive fruits, 99 



Eye-spot, 21 



Female cell, 69 



Ferns, life-cycle of, 44 ; pro- 



