ORGANIZATION: PLANT TISSUES. 



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713. Descriptive Classification of Tissues. 

 Epidermis. 



Epidermal 

 System. . . . 



Fibrovascular 

 System 



Simple hairs. 

 Many-celled hairs. 

 Branched hairs, often stellate., 

 Trichomes. \ Clustered, tufted hairs. 

 Glandular hairs. 

 Root hairs. 

 Prickles. 



Guard-cells of stomates. 



Spiral vessels. 



Pitted vessels 



Scalariform vessels, 

 Xylem (wood) . Annular vessels. 



Tracheides. 



Wood fibers. 



Wood parenchyma. 

 Cambium (fascicular). 



Phloem (bast). 



Fundamental 

 System 



Stem and root. 



Sieve-tubes. 

 Bast fibers. 

 Companion cells. 

 Bast parenchyma. 



Cork. 



Collenchyma. 

 Cortex. . . \ Parenchyma. 



Fibers. 



Milk tissue. 



Pith-ray., j 



Parenchyma. 

 Intrafascicular cambiurr 



( Parenchyma. 

 Pith. ... 1 



I Sclerenchyma. 



Bundle-sheath. 

 Endodermis. 



Palisade tissue. 

 Spongy parenchyma. 



Leaves ] 



. Reproductive Organs (mainly fundamental). 



