

eir 





5 



III 



- '"clofe^ 

 ^e follau- 



■ral fu 



'^ Will J 



& 



n:iniit. 



•'I bulb; 



:ame vlGbl 



e 



s 



' ftem-bul!) 



1 feed- bear- 

 ^j and peri- 

 and leeks a 

 e concentric 

 '^'^^e maybe 



les, as buds 



c 



1 



fubterrane- 

 femble the 

 bark of 

 fuccefs on 

 the root 

 of bur- 



tne 



on 



kers 



the vera 



ditis 



.J > 



in 



an 



the iato^ 



rafily prf , 



lant 

 the 



) 



) 



be 



airj 



a5 

 ill 



Sect.IX»3. 5. 



SEEDS, BUDS, BULBS. 



^75 



1 



d after a time 



pyramidal campanula, and geranium lobatum ; at 



Dt may be feparated from the ftock, and many new plants may he 



s way produced. 



Thefe root-buds, or fuckers, are generally produced near the trunk 



f 



e 



before th 



defcends much beneath the foil ; but 



fom 



e 



mus, and acer, maple, whofe 



fpread 



far horizontally, and near the furface of the earth, they are generated 



great diftance from the pa 

 foon acquire the infl 



becaufe th 



fc 



of the atmofph 



pand 



o 



foliage. Thefe root-fcions from apple-trees are frequently ufed in ve- 

 cretable nurferies for the purpofe of ingrafting upon, and are termed 



paradice-ftocks 



fome eard 



b 



are not liabl 



w 



the canker 



ke the f^rafts from thofe old apple-trees, which have been in fa(h 



above a century 



fe root-fcions referable the trunk of th 



9 



which produces them, not the ingrafted head of it ; and thus may 

 have been manV years from the ftate of a feedling vegetabl 



Similar to thefe root-fc 



f trees -it is probable, that th 



buds of perennial herbaceous plants are produced ; ^ 

 ricated, or fibrous-roots, and whofe fummits peridi 

 For many years the root 

 duced over the old one, ( 



h have d 

 the win 



thickens by an annual new bark bein 

 xa6lly as in the trunks and roots of ti 



o 



■\j 



As thefe roots increafe in fize, the central part, 1 fuppofe, chai 

 ke the internal wood of a tree, and ceafes to poflefs vegetable life 

 nd in procefs of time is liable to decay. On this account thefe p( 

 ennial roots are not (o valuable for the purpofes of medicine or die 

 >r mechanic arts, either before or after they have paffed a determinate 



bark of the root chano;es annually 



d 



f alb 



d then into a kind of wood, and laftly, is liable to decay, as 



occurs in the roots of rheum palmatum 



h 



th 



ey 



fe 



Of 



more years oldo See Se£t. XVII 



This decay of the central part: 



f the root, which happens annually to fome plants, and is furrounded 



I'ith new buds and their root-fibres, exhibits the appearance of the 



lo w e r 



• - 



