DESCRIPTION OF PLATES. 



PLATE I. Frontispiece. Nymphaea gigantea violacea. From a painting made by Mrs. E. Rowan, 

 in the Cape York Peninsula, Australia. 



PLATE 2. Nymphaea odorata. 1-7, development of leaf and stipules; I, 2, front and back views of 

 the same rudiment; 3, older; 4, 5, front and side views of one rudiment; 6, 7, front 

 and back views; 8, rhizome with roots and leaves trimmed off, natural size; 9, trans- 

 verse section of rhizome, natural size. A. Koronski del. 



PLATE 3. Nymphaca gigantea. Under side of leaf and details of flower. I, anterior sepal ; 2, outer- 

 most stamen ; 3, inner stamens ; 4, median petal ; 5, vertical section of ovary ; 6, outer- 

 most petal. Photograph from plant grown at University of Pennsylvania. 



PLATE 4. Nymphaea elcgans. Flower and under side of leaf. From plant grown at University of 

 Pennsylvania; stock of the Dreer Co. A. Koronski del. 



PLATE 5. Nymphaea ampla, from Caspary, 1878, pi. 28. I, flower from hb. St. Petersburg, coll. B. 

 Jaeger, No. 233, Hayti, with 149 stamens, 24 carpels; 2, leaf from hb. Geo. Engelmann, 

 coll. Wright, No. 1857, Cuba; 3, flower, seen from the side; 4, rays of stigma and 

 carpellary styles; 5, stamens (2-5 from the same specimen) ; 6, two carpels of a flower 

 in hb. St. Petersburg, coll. Karwinski, 1841, in Colipa River, Mexico. 



PLATE 6. Nymphaea Havo-virens (N. gracilis Hort, not Zucc., 1832). Flower and under side of leaf, 

 Photo, from plant grown at University of Pennsylvania, from stock obtained from the 

 Dreer Co. 



PLATE 7. Nymphaea stellata versicolor. Under surface of leaf and details of flower, a, sepal ; 

 b-e, petals of successive whorls ; f, stamens ; g, closed flower. From plant grown by 

 the Dreer Co. (Mr. W. Tricker), from seed sent by W. Gollan, Saharanpur, India. 



PLATE 8. Nymphaea caerulca. Flower and under side of leaf. From plant grown at University of 

 Pennsylvania. 



PLATE 9. Nymphaca micrantha. i, under side of leaf; 2, upper side with young plant developing; 

 3 caudex, with a branch; 4, scars of leaves and of a flower, from surface of a caudcx, 

 enlarged; 5, cross section of caudex; 6, longitudinal section of a caudcx; 7, superficial 

 tangential section through leaf cushions of Fig. 4; /, base of a petiole; /, base of a 

 peduncle; 8, section a little deeper than 7; 9, same as 8, a little deeper. From a drawing 

 in color by R. Caspary, now in hb. Berlin, by kind permission of the Directors. 



PLATE 10. Nymphaea capensis. Under side of leaf. From plant grown at University of Pennsyl- 

 vania ; stock from Dreer Co. 



PLATE n. Nymphaea capensis sansibariensis. Flower and leaf. Plant grown at University of 

 Pennsylvania; stock of Dreer Co. A. Koronski del. 



ix 



