TAXONOMY NYMPHAEA ZENKERI. 



197 



The Linnaean specimen bears no data but the name, and the center of the leaf 

 has been destroyed by insects. To this sheet is pinned a second, without mark of any 

 kind, but bearing a flower of N. odorata. Reference is also made under N. lotus in 

 the Species Plantarum to a specimen noted in Flora Zeylanica. This plant is in hb. 

 Hermann, now British Museum, and belongs to our N. pubesccns. 



Specimens of N. thermalis from the " locus classicus " seen in London show a 



Fio. 75. Ni/mpliaca :cnkcri. Flower and under side of leaf natural size. Stamen X 2. From the specimen 

 of Zenker in hit. Berlin, drawn by J. 1'ohl, by kind permission of the Directors. 



peculiar venation of the leaf. In the Lotos group generally there is no plain demar- 

 cation of the primary areas of the network of veins ; but in the plants referred to 

 these areas were sharply marked off by short transverse veins about half way between 

 the center and margin of the leaf. We would not care to separate the two forms, 

 even as varieties, without further acquaintance with living plants direct from the classic 

 localities. 



Nymphaea zenkeri Gilg, n. sp. (Fig. 75.) 



" Rhizome small, conical; leaves long petiolate, deeply cordate, i. e., deeply and 

 very narrowly triangular-excised ; the outline suborbicular or ovate-orbicular, repand- 



