APPENDIX C 529 



in spirit, 191 ; young capitulum, taken in early summer, and 

 hardened in spirit, 194. 



*Helianthus tuberosus : tuber, after treatment with alcohol, 119 ; 

 apical bud, in spirit, 83. 



Hieracium Pilosella, a common native Hawkweed : leaf, for 

 hairs, 146. 



Himanthalia lorea, a marine Alga, usually growing on flat 

 rocks about half-tide level : it may be recognized by the cuplike 

 base of the thallus, and thong-like dichotomous upper branches : 

 the apex is to be hardened in alcohol before use (p. 400). 



*Hippuris vulgaris, the common Mare's-tail : found growing in 

 water ; stem, fresh, 110 ; apical bud, fresh, 111 ; leaf, 130 ; scale- 

 hairs, 146. 



Holly (Ilex Aquifolium) : leaf, fresh or in spirit, 130. 



*Horse-chestnut (^Esculus Hippocastanum) : leaf, to illustrate 

 fall and scar, autumn, spirit, 144 ; colleters, 146 ; root, fresh or 

 in spirit, 153. 



Hoy a, sp. : leaf, fresh or in spirit, 141. 



Humulus Lupulus, the common Hop : glandular scales, 146. 



*Hyaeinthu8 orientalis, the garden Hyacinth : whole plant, 167 

 young scape, in spirit, 86 ; scape or leaves, 177 ; scape, 168 ; leaf, 

 175 ; root, spirit, 180. 



*Hydrocharis Morsus-Rana : a floating plant, native, but not 

 common, from Northumberland southwards ; root, fresh, 33. 



Hydrodictyon utriculatum, a somewhat uncommon fresh-water 

 Alga, which has the form of a reticulate sac (p. 441). 



ffydnum, a genus of Hymenomycetous Fungi, found in woods 

 460. 



Hymenophyllacece : stems, 292. 



Iberis amara, the Candy Tuft : common in gardens ; young 

 shoots, 57. 



*Iris Pseud-Acorus, the native yellow Iris : leaf, 179 ; flower, 

 193. 



Ivy (see Hedera). 



Jerusalem Artichoke (see Helianthus tuberosus). 



Juglans regia, the Walnut : fruit, 216. 



Juniperus, sp. : shoot, 230 ; phloem, 237. 



Jungermannia, a genus of Liverworts, including many common 



M M 



