2% 



AUSTRALIAN BOTANY. 



Fig. H. — Simple leaf of native flax-lily (monocotyledon). 

 Fig. I. — Compound leaf of rose. S, stipules (dicotyledon). 



neath. These are minute openings in the skin of the leaf. 

 In water plants, leaves that float have stomata on the upper 

 surface only ; leaves entirely under water have none at all. 



Opuntias and others of the cactus tribe have stomata on 

 their succulent branches and stems. 



Some plants have leaves termed se7isitive or in-liable, 

 from the fact of their showing a sense of feeling when 

 touched. The well-known sensitive Mimosa is of this class. 

 The leaves of the native sundews are covered with glandular 

 hairs — that is, hairs tipped by a gland or cell, containing a 

 sticky fluid, strong enough to hold insects settling on them. 

 Many other plants show a most remarkable degree of 

 sensitiveness. 



The surfaces of leaves are — 



Glabrous or smooth. Examples : — Victorian laurel, New 

 Zealand laurel, Camellia, looking-glass bush, Moreton Bay fig. 



