188 



INDEX, GLOSSARY, 



Sand-binders, 13, 35, 36, 48, 102, 



107, 108 



Sand Cat's-tail — Phleum aren- 



arium 

 Sand dunes, 85, 36 

 Sand species, '29, 32, 36 

 Sandy situations, 8, 29, 33 

 Savannahs, 1, 38 

 Scaberulous — slightly rough to the 



touch, 22, 45, 164 

 Scabrid — rough to the touch, 22, 



47, 54 

 Soarious — as if scorched by fire, 



92, 145 

 Scents, 27 

 Solerenchyma — mechanical tissue, 



62, 65, 66, 67, 68, 69, 70, 71, 74, 



75, 76, 79, 80 

 Sclerochloa — Poa 

 Sclerochloa maritima — Poa mari- 



titna ; S. procumbens — Poa pro- 



cumbens ; S. rigida — Poa rigida 

 Scorpion-grass — Myosotis 

 Scutellum, 121, 123 

 Sea Barley — Hordeum maritimum 

 Sea Cat's-tail — Phleum arenariwn 

 Sea-grass — Zostera 

 Sea Hard-grass — Lepturus incur- 



vatus 

 Sea Lyme-grass — Elymus arenarius 

 Sea Mat-grass — Psamma arenaria 

 Sea Mat-weed — Psamma arenaria 

 Sea Meadow-grass — Poa maritima 

 Sea Poa — Poa maritima 

 Sea Eeed — Psamma arenaria 

 Sea-side grasses, 27, 29 

 Secondary roots, 121, 123, 131, 



133 

 Seeund — turned to one side, 9, 89, 



108, 109, 114 

 Sedges, 3, 4, 33, 35, 121 



Seed — strictly the contents of the 

 caryopsis (fruit), but in practice 

 the fruit and its adherent palese 

 etc. (chaff) are termed "seed," 

 119, 120, 121, 123, 124, 125,127, 

 128, 129, 130, 131, 134, 135— 

 174 



Seed-coats, 121, 122 



Seedlings, 132, 133 



Semi-aquatic species, 28, 29 



Separation of fruits, 124 



Serrulffi — minute tooth-like asperi- 

 ties, 22, 91, 173 

 Sesleria — Moor-grass, 22, 25, 63, 



64, 68, 90, 91, 93, 101 ; S. casmlea, 



17, 42, 67, 108, 149, 161 

 Sessile — sitting directly on an axis 



without an intervening stalk, 87, 



99, 107 

 Setaceous — bristle-like, 16, 19, 20, 



21, 24,, 45, 111, 113 

 Setaria — Panicuvi 

 Sexual organs, 134 

 Shade action of grasses, 35 

 Shade-grasses, 20, 28, 33, 34, 70 

 Shapes of caryopsis, 127 

 Shapes of leaves, 4, 19, 20 

 Shapes of shoot, 16 

 Sharp-edged shoots, 16 

 Sheath, 5, 8, 12, 15, 16, 17, 18, 19, 



20, 22, 51, 95, 133 

 Sheep's Fescue — Festuca ovina 

 Shelving sheath-margin, 22 

 Shoot, 10, 12, 15, 16, 123 

 Sieglingia decumbens — Triodia de- 



cumbens 

 Siliceous — impregnated with flint — 



silex, 64, 65, 66 

 Silky Bent-grass — Agrostis Spica- 



venti 

 Silvery Hair-grass — Aira caryo- 



phyllea 

 Single - husked Fescue — Festuca 



nniglumis 

 Slender Foxtail — Alopecurus agres- 



tis 

 Small grasses, 7 

 Small Eeed — Calamagrostis 

 Smooth Brome — Bromus racemosus 

 Sociable plants, 36 

 Sod, 37 



Sodium chloride, 33 

 Soft Brome — Bromus mollis 

 Soft-grass — Holcus 

 Soft Holcus — Holcus mollis 

 Soil formation, 36 

 Soil protection, 36 

 Solid leaves, 46 

 Solid stems, 4 

 Sour soils, 33 

 Spartina — Cord-grass, 69, 87, 90, 



99, 105; S. stricta, 27, 31, 78 

 Spear, 123, 132 



