769 



2. Monoecious ; stigmas 2. 



3. C. pulicaris. 4, C. decipiens, 5, C. capitata. 6. C. Suteri, 

 which may belong to the following division, as the number of 

 stigmas is not indicated. 



3. Monoecious ; stigmas 3. 



7. C. microglochin. 8. C. paucijlora. 9. C. Pyrenaica. 10. C. 

 spicata. 11. C. rupestris. 



B. Spikes capitate, involucrate. 

 12. C. cyperoides. 13. C. Baldensis. 



C. Spikes compound. 



1. Stigmas 3. 



14. C. curvula. 



2. Stigmas 2 ; sterile flowers at the apex of the spikes. 



15. C. foetida. 16. C. stenophylla. 17. C. lobata. 18. C. in- 

 curva. 19. C. schoenoides. 20. C. divisa. 21. C. chordo- 

 rhiza. 22. C. vulpina. 23. C. muricata. 24. C. divulsa. 

 25. C. tereliuscula. 26. C. paradoxa. 27. C. paniculata. 



3. Stigmas 2 ; some of the spikes fertile, others sterile, or with sterile 

 flowers in the middle of the spike, or with the sterile flowers at the 

 base of some spiculae, at the apex of others. 



28. C. ludibunda. 29. C. intermedia. 30. C. modesta. 31. C. 

 arenaria. 32. C. repens. 33. C. microstyla. 



4. Stigmas 2 ; sterile flowers at the base of the spikes. 



34. C. brizoides. 35. C. Schreberi. 36. C. Ligerica, {Gay). 

 37. C. stellulata. 38. C. giypos. 39. C. ovalis. 40. C. 

 axillaris. 41. C. Boenninghausiana. 42. C. remota. 43. C. 

 elongata. 44. C. lagopina. 45. C. heleonastes. 46. C. curta. 

 47. C. loliacea. 

 D. Spikes distinct, all androgynous ; sterile flowers at the apex of 

 the spikes ; stigmas 3. 

 48. C. Lmkii. 49. C. Sarda. 

 E. Lateral spikes fertile, terminal androgynous, with the sterile 

 flowers at the apex ; stigmas 3, (except in C. bicolor) ; fruit with an 

 inconspicuous beak. 



50. C. bicolor. 51. C. atrata. 52. C. aterrima. 53. C. nigi-a. 

 54. C. Vahlii. 55. C. Buxbaumii. 



F. Spikes distinct ; stigmas 2. 



1. Beak of the fruit complanate, marginate. 



56. C. mucronata. 57. C. microstachya. 



2. Beak of the fruit small, roundish, generally membranaceous. 



