INSERTION OF LEAVES. 



39 



Fig. 79 



Stellate, Fig. 79, (verticillate,) or whorled, 

 when the leaves grow in a circle around the 

 stem. Ex. Bedstraw, (Galium,) Turk's-cap 

 Lily, (Lilium martagon.) 



Peltate, Fig. 80, (target-shaped,) where the 

 foot-stalk is inserted into the middle of the 

 leaf, on the under side, like the arm of a man 

 holding a shield. Ex. Common Nasturtion, 

 (TroptEolum majus,) Geranium peltatum. 



Perfoliate, Fig. 81, (leaf-pierced,) when the 

 stem runs through the leaf, or the leaf sur- 

 rounds the stem, without any opening. With 

 respect to the stem, this has already been no- 

 ticed. Ex. Bellwort, (Uvularia perfoliata.) 



Amplexicaul, Fig. 82, (stem-clasping,) when 

 the leaf surrounds the stem, except on the 

 side opposite to the apex. Ex. several spe- 

 cies of Solomon's seal, (Convallaria.) Also 

 several of the Star-worts, or Asters. 



Fig. 80. 



Fig. 81. 



Fig. 



Yaginant, Fig. 83, (sheathed,) when the base 

 of the leaf is formed into a tube which sur- 

 rounds the stem. Ex. Most of the grasses. 



When are leaves stellate ? When peltate ? When perfoliate 3 When 

 amplexicaul ? When sheathed ? 



