464 APPENDIX II. 



Convallaria majalis (Lily of Valley). For pollen cultivation, 392. Fivsh 



flowers. 



Coprinus. For structure of hymenomycete, 336. Fresh, on dung-cultures. 

 Cowslip. See Primula. 



Oratcegus (Hawthorn). For orange-red chromatophores, 55. Fruits. Fresh. 

 Oucurbita Pepo (Cucumber, Melon, etc.). Movement of protoplasm in 



hairs, 47. Very young shoots. Fresh. 

 Pollen-grains, 390. Flowers. Fresh. 

 Structure of vascular bundles, and especially for sieve-tabes and 



sieve-plates, 126. Stems about ^ inch thick, cut about | yard from 



apex. Fresh, and in alcohol ; or fixed with boiling water before 



cutting off. 

 Cytisus Laburnum (Laburnum). Structure of cork, 185. Fragments of 



bark from pretty old branches. 



For vascular bundle ends. Flowers, fresh or in alcohol, 



199. 



D. 



Dahlia variabilis (Dahlia). Structure of tuber, 68. Tuber. Fresh. Any 



time. 



Inuline, 69. Pieces of tuber placed in alcohol in or about 



October. 

 Dandelion (Taraxacum Dens-leonis). For latex system, 125. Roots, fresh or 



in alcohol. 



Daucus Carota (Carrot). Colour-bodies in root, 57. Root. Fresh. 

 Delphinium Ajacis (Larkspur). Structure of ovary, 394. Fading flowers. 



Fresh. Summer. A hardy annual. (As substitutes, see Helleborus 



niger and H. fcetidus.) 



consolida (Larkspur). Coloured cell-sap and colour-crystals, 57, 58. 



Flowers. Fresh. Summer. Hardy annual. Also for pistil, 322. 

 Dracaena rubra (Cordytine rubra). Structure of stem, 117. Stems. Fresh, 



or in alcohol. 



E. 



Echeveria. Structure of chlorophyll-bodies, 53. Wax-layer, 99. Leaves. 



Fresh. All the year round. Almost any species will do. All 



half-hardy evergreen perennials, largely used in "bedding-out". 

 Elceagnus angustifolia (Oleaster, or Wild Olive). Hair-scales, 94. Leaves. 



Fresh. (Substitute for Shepherdia canadensis, q.v.) 

 Elder. See Sambuciis nigra. 

 Elodea canadensis. For protoplasmic movements, 49. Fresh. 



For growing points, 212. Fresh. 



Epilobium (Willow-herb). Substitute for CEnothera biennis, g.-y., 387, 397. 

 Eqtiisetum arvense (Field horse-tail). Apical cell, 215. Young growing 



shoots. Fresh, or in alcohol. Spring. 



Structure of stem, 179. Stems. Fresh, or alcohol-material. 



