2l6 



The Waterlii.ies. 



Eucastalia, and in air-canals and venation to Lotos, Nelumbo or Victoria ; 

 but the trimerous symmetry has not come down to us in any living form. 

 Anoectomeria brongniartii (Casp.) Sap. (1865 a, b) (= Nymphaea Are- 

 thusae Brongn., 1822, not of Weber, 1850 ;= Nymphaeites Brongniartii and 

 Arethusae Casp., 1856) flourished in Eocene times, being plentiful in the 

 littoral chalk marls of the Marseilles basin. A. media Sap. (1894 c) occurs 

 in the Aquitanian (Miocene), and A. nana Sap. in the tertiary of Alsace 

 (Mieg, etc., 1890), although Schenk (1888) speaks of the genus as restricted 

 to the Oligocene. Nymphaea polyrkiza Sap. (1865 a) (= N eocenica Sap., 



1 86 1, in part) from the Aqui- 

 tanian of St. Jean de Garguier, 

 resembles Anoectomeria in the 

 trimerous flower, and should on 

 that account be removed from 

 the genus Nymphaea ; it also 

 has a large number of air-canals 

 in the petiole. In other ways, 

 however, it is near to N. gyp- 

 sorum Sap. (1865 a). 



On some other species 

 statements are conflicting. N. 

 calophylla was at first (Saporta, 

 1 861) said to have denticulate 

 leaves, but in 1894 (b) the same 

 writer describes the leaves as 

 entire. The venation of this, as 

 of most other tertiary Nymphaeas, was similar to that of Anoectomeria, 

 and very suggestive of the Lotos group ; but they had the rhizome and 

 stipules of Eucastalia. Saporta considers that their type has become 

 entirely extinct. In this list are included also N. gypsorum Sap., N ame- 

 liana Sap., A^. nalini Sap., N rousseti Sap., and N. dumasii Sap. (Fig. 76). 

 Nymphaea minuta Sap. is near of kin to N tetragona, and N cordata Sap. 

 to the smaller forms of N alba, while N latior Sap. resembles the large 

 N alba of Greece. Wessel and Weber (1855) compare their N lignitica 

 (= Nymphaeites lignitica Casp.) from the lignites of Rott in the lower 

 Rhine region with N. alba, with regard to the shape of the leaf. N. 

 parvula Sap. and charpentieri Heer {Nymphaeites charpentieri Casp.; 

 =e Nelumbium nymphaeoides Ettingsh.) had double flowers like those of 

 N. alba (Saporta, 1879). Nymphaeites microrhizus Sap. is a small form 



Via. 76. Nymphaea dumasii Sap. (after Schenk, 1888). 



