INDEX 



507 



Older sands and sandstones, plant 



fornnations of, 77 

 Olea, 96 



Oleaceae, 96, 189 

 Oleander, loi 

 Oleoideas, 96 



Oliver, Prof. F. W., 88, 203 

 Ombrophile, 149 

 Onagraceae, 189 

 Onion, 319 

 Ontology, 59 

 Oolite, 72 

 Oophyte, 18 

 Oosphere, 18, 19 

 Open canopy, 76 

 Ophrydeae, 291 

 Orache, 198 



Orchidaceae, 277, 278, 287 

 Orchid Group, 278, 287, 298 

 Orchids, 277, 287, 289, 290, 292, 



294, 295 

 Orchis, 289, 291 

 Origanum, 177 

 Origin of British Flora, 89 



„ of plants, 89 

 Orobanchacese, 156 

 Orobanche major, 1 58 (161) 

 Osier, 226, 260 

 Osmosis, 32 

 Ovary, 21, 45 



Ovule, 18, 20, 21, 35, 40, 45 

 Ovum, 18, 20, 21 



Palaeobotomy, 60 

 Palaeontology, 60 

 Palaeozoic, 91 



era, 91 

 „ rocks, 61, 72 



Palms, 52, 63, 65, 92, 271 

 Pamphilus, 305 

 Panic Grasses, 401 



Paniciim sanguinnlr, 40O ''401) 

 Papyrus, 353 



Papyrus antiquorum, 353 

 Parasites, 155, 158, 159, 223, 225, 



227 

 Parietales, 215 

 Parietaria, 245, 246 

 Paris, 270 



„ quadrifolia, 336 (338) 

 Paronychia, 191 

 Paronychiaceae, 191 

 Paronychieae, 191 

 Pax, 191, 388 

 Pea, 4, 6 



Pedunculate Oakwood, 77 

 Pellitory-of-the-wall, 245 

 Pentestemon, 140 

 Perianth, 26,35, 41,43, 45 

 Perisperm, 21 

 Periwinkle Group, lOO 

 Permian, 90, 91 

 Persicaria, 208 

 Petals, 41, 43,44 

 Petiole, 27 

 Petunia, 128 



Phalaris arundinacea, 401 (403) 

 Phanerogams, 50, 52, 55 

 Phillyrea, 96 

 Phloxes, 109 

 Photophilous, 149, 158 

 Photosynthesis, 28, 34, 38 

 Phototropism, 12 

 Phyla, 51 

 Phyllanthus, 234 

 Phylloclades, 319 

 Phylogeny, 50 

 Phyllotaxy, 28 

 Physical basis of life, 9 

 Physiological drought, 29, 194,334, 

 393, 408 

 „ work (appendix), 469 



