ILLUSTRATIONS 
Frontispiece : Poa annua, flowering. 
Fic. 1. Grain of wheat : longitudinal section showing embryo. . . 
», 2. Young shoot or stolon of a grass . ‘ i . . ‘ . 
a 4 Bigules 3 F ‘ . 
» 4 Transverse aeation of a leaf, ee snow vite and venation ‘ és 
+» 5. Cross-section of culm, showing arrangement of tissues. i r 
1, 6. Agrostis canina: panicled inflorescence. A ‘ . . 
» 7 Poa pratensis ‘ , , “ . . * . . . 
» 8. Holcus lanatus . ‘ 3 é A . a ‘ ‘ . 
» g. The flower of grasses . F ‘ . ‘ 5 5 . 
» Io, Anatropous ovule ‘ . . . . 
», 11. Diagrams of grass-flowers, shawiig ayramietny : . . . 
» 12. Cross-section of a grain, showing pericarp and testa . 8 . 
» 13. Anthoxanthum odoratum . - . “ C a . 
1-14. Bromus mollis: panicle ‘ y ; F F . . A 
» 15. Dactylis glomerata é . ‘ ‘ . 2 é . . 
1, 16, Cynosurus cristatus . ‘ ‘ ‘ r i i ‘ é 
» 17. Festuca pratensis . : * ‘ é - . . 
1, 18. Phleum pratense: panicle and enlarged spikelet . F ‘ a 
», 19. Brisa media ‘ 3 , Fi 7 E 7 7 ri 
» 20. Avena pratensis: portion of panicle showing three spikelets 
» 21, Sesleria cerulea: capitate inflorescence and enlarged spikelet 
», 22, Glyceria fluitans: lower portion of panicle and an enlarged 
spikelet . c Fi ‘ , ‘ 3 ‘ : 
1, 23. Agrostis alba : : i : = : : < 
» 24. Catabrosa aquatica ‘ ‘ é a ri : . 
1, 25. Brachypodium sylvaticum : inflorescence and enlarged ligule. 
» 26. Melica uniflora . é : ‘ . F ‘ . 
» 27. Glyceria distans . é ‘ . . . . 
», 28, Aibora verna: plant and ented raceme , i ; . . 
», 29. Lepturus filiformis . : ‘ 7 . . . . , 
1 30. Panicum sanguinale . ’. . . . . . . . 
» 3I. Agropyrum repens P * « “ ‘ “ ‘ # * 
», 32. Bromus sterilis . “ 4 ‘ r s . . . 
»» 33 Brachypodium pinnatum: spike and enlarged ligule . * . 
», 34. Fruiting glume of Dactylis glomerata . . ‘ . . . 
» 35 Portion of fruiting panicle of Bromus mollis zi . . . 
»» 36. Alopecurus pratensis . ‘ P * x ‘ . ‘ 
», 37- Deschampsia cespitosa . ‘ * “ . : x 
» 38. Phragmites communis: portion of panicle and enlarged spikelets 
» 39- Spike of wheat, showing notched rachis. . 
» 40, Cross section of wheat-grain, showing its coats and the ‘endosperm 
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