STEM. 



65 



If the flower-stalk terminates the stem, it is said 

 to be terminal. 



If it is situated at the side, lateral. 



If it grows from between the stem and a branch, or 

 between the stem and a leaf, axillary, pi. 23, «. 



Proceeding from a leaf-bud, gemmaceous. 



Clustered or aggregate, when several grow to- 

 gether. 



Scattered, numerous, and without order. 



When there is no flower-stalk, the flowers are 

 termed sessile or sitting, as in Dodder, (Cuscuta.) 



4. The Leaf -stalk, or petiole, arises from the stem 



or branch, and supports the leaves, fig. 2, 

 pi. 27," ; it is generally of a green colour ^ 

 sometimes flat or hollow on the upper side, 

 round and convex on the under; simple or 

 compound, and sometimes dilated at the 

 base, as in Wild Angelica, (Angelica syl- 

 vestris) and sometimes ending in a tendril, 

 as in White climbing Fumitory, (Fumaria 

 claviculata.) 



5. The Frond is an union of stem and leaf, bearing 



the fructification of Ferns, Sea- weeds, and 

 Lychens, fig. 5. 



6. The Stipe is the stem of mushrooms, fig. 7, pi. 



2 : the term is also used to denote the slen- 

 der thread connecting the appendage with 

 which some seeds of compound flowers are 



K 



