64 STEM. 



Glaucous, clothed with a fine sea green meali- 

 ness, which easily rubs off, as in Couch-grass, 

 (Triticum repens.) 



Striated, marked with fine parallel lines. 



Sulcated, or deeply grooved. 



Muricated, sprinkled with awl-shaped points. 



Thorny or spinous, armed with spines. 



Plants destitute of a stem are termed acaulis, 

 or stemless, as the Dwarf-thistle, (Carduus acaulis.) 



In addition to the. Stem, (Caulis) Linneus 

 enumerates six other species of Trunk or Stalk. 



1 . The Straw or Culm, the peculiar stem of Grasses, 



Rushes, and plants nearly allied to them. 



It is either 



Jointed, as in the Grasses, fig. 3, pi. 27 ; or 

 Without joints, as in the Rush. 



2. The Scape, or stalk, proceeding immediately 



from the root, and elevating the fructification 

 only, as in Primula, fig. 4, pi. 27. Dan- 

 delion, Daisy, Hyacinth, and Narcissus. 



3. The Flower-stalk, or peduncle, issues from the 



stem, and supports the flower and fruit, 

 fig. 2." A partial flower-stalk, or pedicle, is 

 the ultimate subdivision of a peduncle, as 

 in the Cowslip, and Bog-stitchwort, pi. 23. 



