INDEX TO NAMES OF PLANTS 
lizard—Orchis hircina ; marsh— 
Orchis latifolia ; pyramidal—Or- 
chis pyramidalis ; spider—Ophrys 
aranifera ; late spider—Ophrys 
Arachnites ; spotted—Orchis ma- 
culata 
Orchis hireina (lizard-orchid), 261; | 
latifolia (marsh-o.), 245, 247; 
maculata (spotted o.), 264; mas- 
cula (early purple o.), 263 ; pyra- 
midalis (pyramidal o.), 261, 264 ; 
ustulata, 261 
Origanum vulgare (marjoram), 272 
Orpine—Sedum Telephium 
Osier—Salix viminalis 
Osmunda regalis (royal fern), 245, 
295 
Oxalis Acetosella (wood-sorrel), 270, 
274, 289 
Ox-eye daisy—Chrysanthemum Leu- 
canthemum 
Oxtongue—Helminthia echioides 
gan reniformis (mountain-sorrel), 
Oxytropis campestris, 287 ; uralensis, 
259, 288 
Peonia corallina (peony), 284 
Pzony—Peonta corallina 
Papaver spp. (poppy), 216 
Parietaria officinalis (pellitory-of- 
« the-wall), 290, 291 
Paris quadrifolia (herb-paris), 214, 
269, 272 
Parnassia palustris (grass of Par- 
nassus), 245, 247 
Parsley, fool’s—thusa cynapium ; 
hedge—Caucalis Anthriscus 
Parsnip—Pastinaca sativa ; cow— 
Heracleum Sphondylium ; water 
—Sium spp. 
Pastinaca sativa (parsnip), 294 
Pasque-flower— Anemone Pulsatilla 
Pea, meadow—Lathyrus pratensis 
Pear—Pyrus communis 
Pearlwort—Sagina spp. 
Pedicularis palustris (marsh-louse- 
wort), 241, 245; sylvatica (com- 
mon l., red rattle), 251 
Pellitory - of - the - wall — Parietaria 
officinalis 
Pelvetia caniculata, 277 
Penny - cress — Thlaspi arvense ; 
-wort, marsh—Hydrocotyle vul- 
garis, wall—Cotyledon Umbilicus 
a Portula (water - purslane), 
4 
| 
329 
Pepper, water—Polygonum Hydro- 
piper 
Phalaris arundinacea, 242 
Phleum alpina (alpine cat’s-tail 
grass), 255, 287; pratense (cat’s- 
tail grass, Timothy grass), 263 
Phragmites communis (common 
reed), 242, 245, 278 
Phyteuma orbiculare (rampion), 261, 
284 
Picris hieracioides, 261 
| Pignut—Bunium flexuosum 
| Pillwort—Pilwaria globulifera 
| Pilularia globwlifera (pillwort), 237, 
| 
| 
i 
| 
239 
Pimpernel, bog—Anagallis tenella ; 
scarlet—Anagallis arvensis; yel- 
low—Lysimachia nemorum 
Pimpinella Saxifraga (burnet-saxi- 
frage), 259 
Pine, ground—Ajuga Chamepitys ; 
Scots—Pinus sylvestris 
Pinguicula spp. (butterwort), 247, 
253, 254; grandiflora, 213 ; lusi- 
tanica, 213 ; vulgaris, 253 
Pink, Cheddar—Dianthus cesius 
Pinus sylvestris (Scots pine), 268, 
273 
| Pipewort—Eriocaulon septangulare 
Plantago Coronopus (buck’s-horn 
plantain), 282, 284, 285; lanceo- 
lata (ribwort p.), 263, 294, 298 ; 
major (greater p.), 295, 298; 
maritima (sea-p.), 279, 284, 285, 
288 ; media (hoary p.), 261, 264 
Plantain—Plantago spp.; water— 
Alisma Plantago 
Ploughman’s - spikenard — Inwa 
Conyza 
Plum, wild—Prunus domestica 
Poa alpina (alpine meadow-grass), 
259, 288; annua (annual m. g.) 
287, 289, 291, 295; laxa, 287; 
pratensis (smooth m. g.), 258, 260, 
263 ; trivialis (rough m. g.), 263 
Polemonium ceruleum  (Jacob’s- 
ladder), 269 
Polygala calcarea (chalk-milkwort), 
260 ; serpyllacea (heath-m.), 251 ; 
vulgaris (common m.), 259, 260, 
285 
Polygonatum officinale (Solomon’s- 
seal), 269 
Polygonum amphibium, 237, 240, 
243; aviculare (common knot- 
grass), 296; Convolvulus (black 
bindweed), 298; Hydropiper 
