204 



A TEXTBOOK OF BOTANY [Ch. IV, 12 



\y 



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Fig. 152. — Begonia phyllomaniaca, which produces many small leaves 

 over leaf and stem. (From Baile.v.) 



some involve both, as in case of the Willow Roses, — those 

 rose-hke masses of shortened leaves often seen on the ends of 

 Willow stems. 



Fig. 153. — Typical sails, with the Inserts, of Oak: slightlx- reduced. 



On the left a leafy " Oak-ai.)ple," and on tlie ri^lil the insoi^t in cocoon 

 and adult stages. In the center, an Oak sail, and on the I'isht, lower, the 

 same cut open, showing the larva of the insect. (From Tln>nie. 'l\.\'i~honk 

 of Botany.) 



