u 



FAMILIAR LESSONS IX BOTAKY. 



(Fig. 5) presents much the same appearance as the stem 

 and branches would if stripped of the leaves, and is recog- 



1^,1 



Fig. 4. Fig. 5. 



nized by botanists as the true type of roots. Examples are 

 seen in all shrubs and trees. 



24. Tuberous roots {Radix tiiberosa— tuber, a knob) 

 are hard, fleshy bodies, growing some- 

 times at the ends of the fibers, and 

 again strung irregularly along upon 

 them. The potato, ground artichoke, 

 and the Mexican vine are tuberous 

 roots. 



25. Bulbous roots (Radix hidhom 



—bulhus, bulb) (Figs. 7, 8, 9) are divided 



'"^K^l // A0_^ into conns, or solid bulbs, as the gladi- 



Pj^j g olus; tunicated, or coated, as the onion ; 



squamous, or scaly, like the lily. 



2G. The Rhizoma grows horizontally, throwing out 



fibers and putting forth leaves only at one end. These 



24. Describe a tnberon? root. 



25. Bulbous. Derivation of bulbous? Corni ? Tunicated? Squamous bulb? 



26. Describe the rhizoma. Examples. Are there other subdivisions of roots ? 

 What have you now learned ? 



