LIST OF ILLUSTRATIONS 



FIG. PAGE 



Nymphaea lutea, L. [Otto von Brunfels, Herbarum vivae 



eicones, 1 5 30] Frontispece 



1. Sagittaria sagittifolia, L. Inflorescence. [A. A.] .... 10 



2. Sagittaria sagittifolia, L. Infructescence. [A. A.] . . . lo 



3. " Gratnen bulbosiim aquaticum." [Gaspard Bauhin, 1620] . . II 



4. Sagittaria sagittifolia, L. Tuber and submerged leaves. [A. A.] . 13 



5. Sagittaria sagittifolia, L. Leaves. [A. A.] ..... 14 



6. Sagittaria sagittifolia, L. Plant with stolons and tubers. [A. A.] . 16 



7. Sagittaria sagittifolia, L. Base of plant with old tuber and young 



stolons. [A. A.] 18 



8. Sagittaria sagittifolia, L. Diaphragm of petiole. [Blanc, M, le 



(1912)] 19 



9. Echinodorusranunculoides,(h.)Y.ngt\m.. Land and water forms. [A. A.] 21 



10. Nymphaea lutea, L. Rhizome. [A. A.] ..... 25 



11. Castalia alba, Greene. Rhizome. [A. A.] ..... 26 



12. Nymphaea lutea, L. Rhizome with submerged leaves. [A. A.] . 27 



13. Castalia alba, Greene. Seedlings, [Massart, J. (1910)] . . 28 



14. Cabomba. Shoot with floating and dissected submerged leaves 



[Goebel, K. (1891-1893)] 29 



15. Castalia alba, Greene. Peduncle and flower-bud. [A. A.] . . 31 



16. Victoria regia, Lindl. Seedling. [A. A.] ..... 33 



17. Nymphaea lutea, L. Fruit. [A. A.] 34 



18. Nymphaea lutea, L. Seedlings. [A. A.] ..... 35 



19. Castalia Lotus, Txatt. Germination of tuber. [Barber, C. A. (l 889)] 37 



20. Brasenia. Mucilage hairs. [Goebel, K. (1891-1893)] . 



21. Map of existing and extinct distribution of iV^/wffz^o. [Berry, E. W. 



(1917)] 



22. Limnanthemum nymphoides, Hofltmgg. and Link. [A. A.] 



23. Limnanthemum nymphoides, HoEmgg. andljink. Rhizome. [Wagner 



R-(i895)] 



24. Hydrocharis Morsus-ranae, L. Buds. [A. A.] 



25. Hydrocharis Morsus-ranae, L. Leaf anatomy. [A. A.] . 



26. Hydrocharis Morsus-ranae, L. Stomate. [A. A.] . 



27. Hydrocharis Morsus-ranae, L. T. S. submerged leaf. [A. A.] 



28. Hydrocharis Morsus-ranae, L. Midrib and inverted bundle from 



leaf. [A. A.] 



29. Hydrocharis Morsus-ranae, L. Plant with turions. [A. A.] . 



38 



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