STEM. 



84. Phylloclades. Examine and draw the following : 



(a) Stem of Asparagus, showing needle-like phylloclades. 



(b) Duck-weed plant (Lemna), showing floating phylloclades with adventitious 



roots. 



(c) Muehlenbeskia, with flat green stem bearing vestigeal leaves when young. 



(d) Spinous phylloclade. 



(e) Opuntia with fleshy phylloclade. 



85. Spines. Examine and draw the stems showing spines with lateral buds. 

 Notice the origin of the spines in the axils of leaves. 



