186 



INDEX, GLOSSARY, 



Orchids, 2 



Ovary, 86, 87, 89, 95, 96, 97, 119, 

 121 



Ovate-acute — egg-shaped in out- 

 line, but the free narrow end 

 pointed, 61 



Ovate-lanceolate— ovate, but taper- 

 ing above, 168 



Pale— Palea, 86, 89 



Palea, 84, 85, 86, 87, 92, 93, 95, 



ge^ 97, 99—118, 119, 120, 124, 



125, 127, 128, 129, 130, 131, 134, 



135—174 

 Pampas-grass, 1 

 Panic-grass — Pan icum 

 Panicle, 5, 12, 87, 88, 90, 91, 103, 



105, 109—118 

 Panicum, 4, 19, 67, 69, 72, 87, 90, 



92, 101, 105, 109, 124, 135, 136, 



137, 142; P. Crus-galli, 137; P. 



glaucum, 30 ; P. iMcatum, 21 ; P. 



sanguinale, 30 ; P. verticillatum, 



30 

 Papillae — protruding cells not long 



enough to be termed hairs, 64, 



67 

 Pappus, 125 



Parallel venation, 21, 22 

 Parenchyma — ordinary soft cel- 

 lular tissue of herbaceous parts, 



64, 65 

 Partial inflorescence, 86 

 Pasture, 1, 10 



Pasture-grasses, 27, 28, 37 

 Perennial Beard-grass — Polypogon 



littoralis 

 Perennial grasses, 10, 11, 40, 48, 



58, 114 

 Perennial Oat — Avena pratensis 

 Perennial Oat-grass — Avena pra- 

 tensis 

 Perfect flowers, 89, 90, 99, 100, 



105, 106 

 Perianth — the floral coverings, 96 

 Pericarp — the coats of the true 



fruit, 121, 122 

 Petiole, 5, 17 



Phalaris — Canary grass, 88, 101, 

 109, 136 ; P. arundinacea — Di- 

 grapliis arundinacea ; P. canari- 

 ensis, 81, 139 



Phleum, 66, 88, 89, 90, 91, 93, 102, 

 109, 110, 136, 137, 142 ; P. aljn- 

 num, SO, 102 ; P. arenarium, 7, 10. 

 29, 37, 55, 102, 136; P. asperum, 

 31, 55, 102, 136; P. Boehmen, 

 8, 31, 55, 102, 136; P. nodosum— 

 var. of P. pratense ; P. pliala- 

 roides — P. Boehmeri ; P. pratense, 

 7, 8, 11, 13, 25, 28, 32, 55, 70, 

 76, 102, 128, 135 



Phloem, 67 



Phragmites communis — Arundo 

 Phragmites 



Physiognomy, 36, 37 



Piercing of soil, 132 



Pilose — with scattered, rather long 

 soft hairs, 59 



Plaited vernation, 21 



Plantago, 3 



Plicate — plaited 



Plume-like inflorescence, 91, 103 



Plumule, 121, 123, 132, 133 



Poa, 2, 15, 20, 21, 23, 25, 26, 47, 54, 

 61, 74, 83, 84, 88, 89, 90, 91, 92, 

 103, 104, 109, 110, 113, 114, 115, 

 116, 118, 127, 131, 140, 141, 144, 

 146, 151, 162 ; P. aljuna, 8, 11, 



13, 14, 16, 17, 31, 44, 54, 63, 

 114, 134, 146 ; P. ayinua, 8, 10, 



14, 16, 30, 34, 42, 53, 54, 63, 

 68, 74, 75, 114, 127, 141, 146; 

 P. dquatica — Glyceria aquatica; 

 P. bulbosa, 8, 11, 14, 29, 54, 69, 

 111, 114, 146; P. compressa, 8, 

 11, 14, 15, 16, 30, 32, 42, 53, 54, 

 63, 69, 74, 111, 114, 139, 140; 

 P. distans, 29, 30, 114, 146 ; P. 

 fertilis — P. serotina, 45 ; P. 

 fluitans — Glyceria Jluitans ; P. 



laxa, 31, 134; P. loliacea, 31, 

 108, 114, 146; P. maritima, 8, 

 11, 14, 16, 20, 22, 26, 29, 47, 

 54, 111, 114, 146; P. nemoralis, 

 7, 11, 14, 15, 28, 34, 45, 54, 63, 

 74, 75, 113, 114, 139, 140, 141. 

 161 ; P. pratensis, 7, 11, 13, 14, 

 16, 17, 27, 32, 33, 41, 42, 44, 

 45, 54, 55, 67, 75, 113, 114, 

 139, 140, 141; P. procumbens, 

 31, 111, 114 ; P. rigida, 10, 14, 

 30, 111, 114, 146; P. stricta— 

 var. of P. alpina, 134 ; P. trivi- 



