fall weed apri/iv ci/eett , . r*ij9t//c^ foffex^) 



Jhll til cad 



€O^P^'\^^f^ 



"iast-^ rt'rtrf (or certex) 



I ONCi T UD/ NAL ^£C T/ON 



i;^5. Oak branch: {ck) cork, {cc) cork cambium, {coV) coUenchyma, {cor.'p) cortical 

 parenchyma, istr) strengthening cells, {gy') crystal-bearing cells, {hp) bast paren- 

 chyma. (5/>) sieve-plate, {si) sieve-tube, (d) duct, {tr) tracheid, {wp) wood 

 parenchyma, {st.wp) wood parenchyma containing starch, (mr) medullary ray, 

 {V) lenticel. 



