LECT. VI.] THE STEM. BRANCHING. 267 



clothed with some kind of appendage ; and ac- 

 cording to the nature of this, the stem is desig- 

 nated by a term expressive of its covering. It is 

 said to be, 



a. Leafy (foliosus, foliatus *J, when it is fur- 

 nished with leaves from the base to the apex 

 (vide Plate 4, fig. 1,2). When the stem passes 

 through each leaf, it is denominated perfoliate 

 (perfoliatus) , as in Yellow Wort, Chlora per- 



foliata (Plate 4, fig. 6). 



b. Winged (alatus), when the edges or 

 angles are longitudinally expanded into leaf- 

 like borders. (Plate 4, fig. 3.) 



c. Sheathed (vaginatus) (fig. o), when it is 



embraced by the base of each leaf, as 

 if by a sheath ; as exemplified in the 

 Grasses ; Snake Weed, Polygonum 

 Bistort a, &c. 



d. Stipulated (stipulatus), when 

 it is furnished with stipulae (organs 

 which I shall have occasion afterwards 

 to explain to you), at the axillae of 

 each leaf: as in the Common Vetch, 

 Vicia sativa, broad-leaved Everlast- 

 ing Pea, Lathy rus latifolius *\* ; &c. 



e. Tendril-bearing (cirriferus), when it 



* " Foliatus, foliis instructus est." Phil. Bot. 82. 3. 

 f Vide Plate 4, fig. 7, which represents the winged stem 

 of Lathyrus latifolius ; a. a. a. a. are stipulae. 



