io8 



The Waterlilies. 



Fig. 49. Seedlings of a hybrid Nymphaca of the J,otos group. 1, tuber formation at summit of epicotyl 

 well advanced. 2, the first broad leaf expanded, the primary root, with root hairs, mature. 3, the first (filiform) 

 leaf nearly mature, and rhizoids springing from cotyledon. 4, a slightly older plant, from a seed which was 

 buried more deeply in earth ; the epicotyl is much elongated. 6, first secondary root. 6, small ripening tuber ; 

 epicotyl rotted off. 7, beginning of second secondary root and third broad leaf (4th leaf). 8, soon after germi- 

 nation ; the tegmen (dotted) extends beyond the hard seed coat, bearing the detached operculum. 9, plant let 

 of same aye as 3, with cotyledons broken off from their petioles, a, first (filiform) leaf ; o, operculum. 



