434 



ARRANGEMENT OP THE GENERA 



Stamens hypogynous, generally three ; anthers erect, basifixed. 

 Ovary one-celled, often surrounded by bristles ; style single, gene- 

 rally three-parted, sometimes two-parted. Fruit a hard achenium 

 or nucule. 



CYPEREJE. 



1. Cyperus, 59, 65. 



2. Schcenus, 58, 64. 



3. Cladium, 49, 57. 



4. Rhynchospora, 58, 65. 



5. Eleocharis, 59, 68. 



6. Scirpus, 58, 65. 



7. Eriophorum, 59, 68. 



8. Carex, 343, 349. 



ELYNE.E. 



9. Elyna, 343, 347. 



1. Digitaria, 59, 75. 



PHALARIDE^E. 



2. Phalaris, 59, 70. 



3. Anthoxanthum, 49, 58. 



4. Hierochloe, 60, 80. 



Order XCVI. GRAMINA. 



Flowers perfect, sometimes monoecious or dioecious, each with 

 two bracteas or glumes (chaff-scales), rarely one or none, and two 

 inner bracteas or palese (husks), rarely one. Stamens hypogynous, 

 from one to six, generally three. Ovary one-celled ; styles gene- 

 rally two. Fruit a caryopsis. 



16. Avena, 60, 90. 



17. Holcus, 59, 78. 



18. Triodia, 60, 83. 



19. Lagurus, 59, 89. 



FESTUCEJE. 



20. Melica, 57, 79. 



21. Poa, 60, 82. 



22. Glyceria, 60, 81. 



23. Briza, 60, 84. 



24. Dactylis, 60, 84. 



25. Cynosurus, 60, 85. 



26. Festuca, 60, 86. 



27. Bromus, 60, 88. 



HORDED. 



28. Triticum, 60, 93. 



29. Lolium, 60, 91. 



30. Elymus, 61, 92. 



31. Hordeum, 61, 93. 



ROTTBOLLIEJE. 



32. Rottbollia, 60, 92. 



33. Nardus, 59, 69. 



5. Phleum, 59, 70. 



6. Alopecurus, 59, 71. 



7. Knappia, 59, 72. 



AGROSTIDE^E. 



8. Polypogon, 59, 73. 



9. Milium, 59, 73. 



10. Agrostis, 59, 73. 



ARUNDINEJE. 



11. Arundo, 60, 77. 



CHLORIDEJE. 



12. Cynodon, 59, 74. 



13. Spartina, 59, 85. 



SESLERIEJE. 



14. Sesleria, 60, 80. 



AVENEJB. 



15. Aira, 59, 76. 



