326 
Hippocrepis 
vetch), 260 
Hippophaé rhamnoides (sea-buck- 
thorn), 281, 282 
Hippuris vulgaris (mare’s-tail), 237, 
239 
comosa  (horse-shoe 
Hogweed—Heracleum Sphondylium 
Holcus lanatus (Yorkshire fog), 263 ; 
mollis (soft grass), 271 
Holly—Ilex Aquifolium 
Honeysuckle—Lonicera 
num 
Hop—Humulus Lupulus 
Hordeum maritimum (sea-barley), 
279 ; murinum (wall-b.), 295 
Horehound, blaek—Ballota nigra 
Hornbeam—Carpinus. Betula 
Horned pondweed—Zannichellia 
spp. ; poppy—Glaucium lutewm 
Periclyme- 
Hornwort — Ceratophyllum demer- | 
| Kale, sea—Crambe maritima 
sum 
Horse-chestnut— Afsculus Hippocas- 
tanum ; -shoe vetch—Hippocrepis 
comosa ; -tail—Equasetum spp. 
Hottonia palustris (water-violet), 
237, 239 
Hound’s-tongue —Cynoglossum offi- 
cinale 
Houseleek—Sempervivum tectorum 
Humulus Lupulus (hop), 214, 293 
Hutchinsia petrea, 290 
Hyacinth, wild—Scilla nutans 
Hydrocharis Morsus-rane (frogbit), 
237 
Hydrocotyle vulgaris (marsh-penny- 
wort), 245, 247, 251 
Hyoscyamus niger (henbane), 282 
Hypericum Elodes (marsh St. John’s- 
wort), 242; perforatum (ccmmon 
St. J.), 294; pulchrum (upright 
St. J.), 296 ; quadrangulum, 245 ; 
tetrapterum (St. Peter’s-wort), 245 
Hypocheris radicata (cat’s-ear), 264 
Iceland-moss—Cetraria islandica 
Ilex Aquifolium (holly), 269, 270, 271 
Impatiens fulva (orange-flowered 
balsam), 215, 241 
Inula Conyza (ploughman’s-spike- 
nard), 261, 272, 282; crithmoides 
(golden samphire), 284, 285; 
} Aare (common flea-bane), 
294 ; salicina, 214 
Iris fetidissima (foetid iris), 272, 
282; Pseudacorus (yellow flag), 
242, 245 
Isoétes lacustris (quillwort), 238 
BRITISH 
| Juncus spp. (rushes), 
PLANTS 
Ivy, common—Hedera Helix; 
ground—Nepeta Glechoma 
Jack-by-the-hedge—Alliaria offici- 
nalis 
Jacob’s-ladder—Polemonium ceru- 
leum 
Jasione montana (sheep’s-bit sca- 
bious), 291 
253, 254; 
articulatus, 246; biglumis, 287 ; 
bufonius, 241 ; conglomeratus, 246, 
251; effusus, 251; Gerardi, 279; 
obtusiflorus, 245, 247 ; squarrosus, 
251; supinus, 246; trifidus, 288, 
289 
Juniper—Juniperus communis 
| Juniperus communis (juniper), 261, 
271, 273, var. nana, 288 
Kidney-vetch—A nthyllis Vulneraria 
Knapweed—Centaurea spp. 
Knautia arvensis (field-scabious), 298 
Knot-grass—Polygonum aviculare 
| Kobresia caricina, 259 
Keeleria cristata, 260 
Lactuca alpina (alpine sowthistle), 
287; muralis (wall-lettuce), 290, 
291 
Lady’s - bedstraw—Galium verum ; 
fingers — Anthyllis Vulneraria ; 
slipper-orchid—cypripedium Cal- 
ceolus ; smock—Cardamine pra- 
tensis ; tresses—Spiranthes spp. 
Lamb’s - lettuce —Valerianella oli- 
toria 
Laminaria, 277 
Lamium album (white deadnettle), 
216, 294 ; Galeobdolon (yellow d., 
archangel), 270, 294 ; purpurewm 
(red d.), 294 
Lapsana communis 
216, 263, 294 
Larch—Larix 
Larix (larch), 273, 274 
Lathrea squamaria (toothwort), 269, 
294 
Lathyrus 
263, 293 
Laurel, cherry—Prunus Lauro-cera- 
sus ; spurge—Daphne Laureola 
Lavatera arborea (tree-mallow), 284 
Lemna gibba (thick-leaved duck- 
weed), 237 ; minor (small d.), 233, 
237 ; trisulca (ivy-leaved d.), 237 
(nipplewort), 
pratensis (meadow-pea), 
