PLANTS SUITABLE FOR VIVARIA. 41 
plant, have the appearance of rock-work, and provide climbing 
facilities and shade for the Reptiles. 
Fig. 29. Fic. 30. 
THICK DUCK-WEED (Lemna gibba). 
Fig, 31. 
LESSER DUCK-WEED (Lemna minor). 
i 
fe 
Of course the above lists of Ferns ‘ 
and other plants could be considerably Fic. $2.—IVY-LEAVED 
DUCK-WEED (Lemna trisulea). 
lengthened, but I hope enough names 
have been given to enable a novice in these matters to obtain some 
idea of what kind of Fern or plant he should place in his case. 
ee! 
