PLATE II. 



Fig. 1. Potamogeton sp. 1, p. 58. Endocarp. y. Brunssum. 



» 2. Potamogeton sp. 2, p. 59. Endocarp. y. Brunssum. 



» 3. Potamogeton sp. 3, p. 59. Endocarp. y Brunssum. 



» 4. Potamogeton sp. 4, p. 59. Endocarp. y. Reuver. 



» 5. Potamogeton sp. 5, p. 59. Endocarp. y. Brunssum. 



» 6. Potamogeton sp. 6, p. 60. Endocarp. y. Swalmen. 



» 7. Potamogeton sp. 7, p. 60. Endocarp. y. Reuver. 



» 8, 9. Potamogeton sp. 8, p. 60. Endocarps. y. Reuver. 



» 10. Potamogeton sp. 9, p. 61. Endocarp. y. Swalmen. 



» 11. Potamogeton sp. 10, p. 61. Endocarp. y. Reuver. 



12 

 » 12. Najas marina, p. 61. Seed, short form, y Reuver. 



12 

 » 13. Najas marina, p. 61. Seed, long form. y. Reuver. 



12 

 » 14. Najas marina, p. 61. Seed, inside, showing tegmen. y. Reuver. 



12 

 » 15, 16, 17. Najas aspera, p. 62. Seeds, y. Brunssum. 



12 

 » 18, 19. Najas lanceolata, p. 62. Seeds, y. Reuver. 



12 

 » 20. Najas fusiformis, p. 62. Seed. y. Reuver. 



12 

 » 21. Najas fusiformis, p. 62. Seed, with testa partly removed, showing tegmen. y. Reuver. 



12 

 » 22a, b. Zannichellia? p. 63. Carpel, y. Reuver. 



12 

 » 23. Alisma Plantago, p. 63. Carpel, y. Swalmen. 



12 

 » 24. Sagittaria sagittifolia, p. 63. Carpel, wanting wing, y Reuver. 



12 

 » 25. Sagittaria sagittifolia, p. 63. Carpel, y. Recent. 



12 

 » 26. Alisma Plantago, p. 63. Carpel, y. Recent. 



12 

 » 27. Scirpus Tabernaemontani ?, p. 64. Nut. y. Swalmen. 



12 

 » 28. Scirpus lacustris var., p. 64. Nut. y. Reuver. 



12 

 » 29, 30. Scirpus mucronatus ?, p. 64. Nuts. y. Reuver. 



12 

 » 31,32. Scirpus mucronatus, p. 64. Nuts. y. Recent. 



12 

 » 33,34. Scirpus cf. carinatus, p. 64. Nuts with setae, y Swalmen. 



12 

 » 35. Cladium Mariscus, p. 65. Fruit with part of glume, y. Reuver. 



12 

 » 36. Cladium Mariscus, p. 65. Fruit, y. Recent. 



