342 GLOSSARY 



Citscuta — The dodder genus, parasitic upon fiax and 



clovers, &c. 

 Cuticle — The exterior and thickened part of the epidermis. 

 Cyclamen — Dwarf primulaceous plants with shortened stems 



(corms). 



D 



Dahlia — A genus of tuberous-rooted plants. 



Darliii^loiiia — A genus of Californian plants related to the 

 side-saddle plants. 



Datura — The generic name of the thorn-apple. 



Debris — Remains, rubbish. 



Deciduous — Applied to plants, the leaves of which fall off in 

 autumn. 



Dehiscent — Splitting open when ripe. 



Deodar — A tree allied to the cedar of Lebanon. 



Dcutaria — A cruciferous plant bearing bulbils in the axils 

 of the leaves. 



Diagraiuuiatic — Drawn to illustrate a statement. 



Dicotyledon — A plant whose embrvo has two primary seed- 

 leaves. 



Diffusion — The intermingling of fluids (gases or liquids). 



Dia'cious — When the pistillate flowers and staminate flowers 

 are borne upon separate plants of the same species. 



Dispersion — Scattering. 



Droscra — The generic name of the sundews. 



E 



Elastic — Springy. 



Embryo — The future plant contained in the substance of 



the seed. 

 Embryo-sac — The cavity in the substance of the nucellus, 



containing the egg-cell, which after fertilisation 



becomes the embryo. 

 Endocarp — The inside layer of the pericarp. 

 Entomopliilous — Pollinated by insects. 

 Epicarp — The outside layer of the pericarp. 



