42 



MORPHOLOGY OF BUDS. 



b ~ 



leal-buds. In other hardy shrubs and trees, the buds, equally 



or almost destitute of scales, 

 are minute, hidden in or un- 

 der the bark, or otherwise 

 inconspicuous until vernal 

 growth commence-. Phila- 

 delphus and Taxodimn are of 

 this kind. 



7~2. Subpetiolar IJuds. Smiie 

 leaf-buds are singularly cov- 

 ered in their early state and 

 through the summer, as iu the 

 Locust (Robinia). Honey-Lo- 

 cust Fig. !MJ (where they re- 

 main very undeveloped), in 

 Yellow AYood (C'ladrastis).and 

 more conspicuously in the 

 Plane-tree i Platauus. Fig. - S 7 i : 

 here they are all formed tin- 

 der the base of the protecting 

 leaf-stalk, which in Plane-tree 

 forms a sheath or inverted cup. 

 as st ss very like a candle-extinguisher. 



fitted to and concealing the conical bud until autumn, when hy 



the fall of the leaves these buds are exposed. 



FIG. s:: Diagram <>f vertical section nf a strong lunl. such as of Horseclifstiiut. 

 l. 'I'ln- :i\is iif tin- S:IIIK> ilrvcln]ii!i;:, tin- flniiLMt i"ii lif^iiiiiint: 'itli tlir l"\vr>t intcr- 

 r, sunn I'n lli < \vc<l liy tin- citlirrs in siirr.--sion. s."i. .\ year's growth of Horsflchestnut, 

 with a Irimiiial bud: n, srars left by the bud-scales of the previous year: 

 b, scars li-t'l l.\ Hi.' fallen Iraf-stalks: <; axillary Inids. 

 FIG. KG. Branrli ami lnnls (all axillary) .if tin- Lilac. 

 FIG. sT. Lcaf-luul un.lcr the petiole of the Plane-tree. 



