TAXONOMY NVMPHAEA CAERULEA. 



145 



MEASUREMENTS OF PETALS (IN CENTIMETERS). 



i=inner. m = median. o = outer. 



MEASUREMENTS OF STAMENS (IN CENTIMETERS). 



GEOGRAPHIC DISTRIBUTION. Northern and Central Africa. Cairo, Savigny 1802. 

 Damietta and Rosetta, coll. Schweinfurth. Guinea, Schum. & Thonn. Nubia, Kotschy 

 (see note). Sona Gungu (Distr. of Cataracts), Congo, Wild. & Dur., 1900. Angola, 

 Welwitsch. Omkenen, Kordofan, coll. Dr. Hendur, No. 890, in hb. Berlin. Cyre- 

 naica, coll. M. Pacho, 1826, in hb. Paris. 



Var. albiflora, Caspary. 



Flowers white ; sepals without black spots. 



Nymphaca caerulea var. albiflora, Caspary 1877. 



N. abbreviata, Guill. & Perr. 1830. 



N. ampla, Kotschy MS. = N. nubica, Lehmann (see Note). Not N. ampla, DC. 1821 b. 



GEOGRAPHIC DISTRIBUTION. With the type. Rare. Damietta, Egypt, coll. Sieber, 

 fid. Caspary 1877. Egypt, coll. Schweinfurth, 1885, in hb. British Museum. Central 

 Africa, coll. Schweinfurth, No. 2329, in hb. Berlin. Kounoun, Cape Verde, coll. Per- 

 rottet, 1831, in hb. Delessert. 



NOTE. The name of this species has had a varied application, as is shown by the 

 synonymy of this and the preceding and following plants. The cause lies partly in 

 ii 



