VI] 



THE IVY-LEAVED DUCKWEED 



79 



FIG. 49. Lemna trisulca, L. Habit drawing. (Slightly enlarged.) 

 [Kirchner, O. von, Loew, E. and Schroter, C. (1908, etc.).] 



FIG. 50. Lemna trisulca, L. Flowering shoot. (Enlarged.) 

 [Hegelmaier, F. (1868).] 



FIG. 51. Lemna trisulca, 

 L. T.S. bundle from stalk 

 of frond. One vessel (gef) 

 and one sieve tube (s) 

 with two companion cells. 

 (x 475 .) [Schenck, H. 

 (1886).] 



