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MONOCOTYLEDONS. 



The bulb of a Garden Hyacinth, a Daffodil, and an Onion should be 

 examined, since the parts are more easily observed than in the Bluebell. 

 The bulb is largely composed of the enlarged persistent bases of foliage - 

 leaves, but it also includes a certain number of scale -leaves. A bud 



-FOLIAGE LEAVES 



BASES OF FOLIAGE 



LEAVES 

 OF LAST YEAR- 



..SCALE LEAVES 

 OF THIS YEAR 



SSALE LEAVES 



SCALE LEAVES 

 FLATTENED STEM 



Fig. 111. Vertical Section of Flowering Bulb of Hyacinth in Spring, with a lateral 

 bud enclosed by a pair of scale-leaves. 



The shaded portion on the left marks this year's growth on that side. On the right 

 the bud of next year is shown. 



arises in the axil of the innermost leaf, and next spring this will 

 develop into a flowering axis, surrounded by a number of foliage-leaves, 

 and outside of these a few scale-leaves. The outermost scales of the 

 previous year shrivel, the inner ones persist, together with the bases 

 of the foliage-leaves, and the enlarged axillary bud now forms the 

 central portion of the new bulb. This may continue for several years, 



