Chalk-fleeing, 35 Chalk species, 27, +32+, 35 _Chamagrostis_--_Mibora_ Chlorophyll, 2, 62, 70, 72, 73, 95 _Cinna_, 97 Circular shoot sections, _16_, 43 Classification according to anatomical characters of leaf, 72-82 Classification according to floral characters, 97, 99-118 Classification according to characters of seed, 135-174 Classification according to vegetative characters, 39-61 Classification of seedlings, 133 Clay species, 32 Cleistogamous--when pollination and fertilisation are completed in flowers which do not open, 120 Climbing grasses, 6 Close panicle--an inflorescence in which the primary branches do not diverge widely from the rachis, 110 Cock’s-foot--_Dactylis glomerata_, 83 Cockspur Panicum--_Panicum Crus-galli_ Collar, 58, 123 Coloured nodes, 15 Coloured sheath, 18 Coma, 125 Common Cat’s-tail--_Phleum pratense_ Common Dog’s-tail--_Cynosurus cristatus_ Common Foxtail--_Alopecurus pratensis_ Common Mat-grass--_Nardus stricta_ Common Quaking-grass--_Briza media_ Common Reed--_Arundo Phragmites_ Compact Brome--_Bromus madritensis_ Composites, 2, 125 Compressed shoots, 15, _16_, 40, 41, 48, 53 Conduplicate--folded, 15, _16_, 20, 63 Convolute--inrolled, 15, _16_, 63 Copses, grasses of, 28, 34 Coracle-shaped “seeds,” 128, _137_, 166, _167_ Cord-grass--_Spartina stricta_ Coriaceous--leathery, 21 Corn, 1 Corn-field species, 28 Corn-type of fruit, 136, 138, 167 _Corynephorus canescens_--_Aira canescens_ Cotton-grass--_Eriophorum_ Couch-grass--_Agropyrum repens_. _See also_ Twitch, 150 Creeping Fescue--_Festuca rubra_ Creeping grasses, _12_, 13, 14, _15_ Creeping grass-seeds, 127 Creeping Soft-grass--_Holcus lanatus_--_Holcus mollis_ Creeping stem, 12 Crested Dog’s-tail--_Cynosurus cristatus_ Crested Kœleria--_Kœleria cristata_ Cross-breeds, 120 Cross-fertilisation, 119, 120 _Crypsis_, 123 Culms, 14, 37, 83 Curved Lepturus--_Lepturus incurvatus_ Cuspidate--ending suddenly in a short point, 135 Cut-grass--_Leersia_ Cuticle, 68, 70 Cutinized, cuticularized--impregnated with corky substance, 64 Cylindrical inflorescence, 90 Cylindrical “seed,” _173_ _Cynodon_--Dog’s-tooth grass, 14, 65, 67, 69, 87, 90, 105; _C. Dactylon_, _15_, 31, +72+, 137 _Cynosurus_--Dog’s-tail, 14, 18, 25, 49, 50, 52, 81, 88, 89, 90, 93, 103, 130, _148_, 151, 171; _C. cristatus_, 7, 11, 13, _23_, 28, 32, +50+, +80+, +108+, 147, +148+; _C. echinatus_, 100, 108 _Dactylis_--Cock’s-foot, 11, 13, 14, 16, 20, 26, 41, 63, 83, 88, 89, 90, 91, 93, 103, 148, 158; _D. glomerata_, 7, _16_, 17, 27, 32, 33, 34, +41+, 65, 66, 69, +74+, +109+, 149, _150_, +151+ Darnel--_Lolium perenne_--_Lolium temulentum_ Decumbent Heath-grass--_Triodia decumbens_ Dehiscent fruits, 123 Depauperated--starved and consequently dwarfed, 109