LECT. VII.] ANATOMY OP STEMS. 309 



ing to the marginal cut, in which 1. represents 

 J 2 a portion of the stem 



of Trad escan ti a Virginica, 

 with two lateral shoots 

 or branches : a. a young 

 shoot, partially envelop- 

 ed in its sheath b. and 

 its origin fully displayed 

 by the removal of the leaf 

 in the axilla of which it 

 is seated ; c. another shoot, 

 but covered by the base 

 of the leaf, the upper 

 part of which is cut away 

 at d. In 2, which represents the same portion 

 of stem divided longitudinally, the manner in 

 which the buds a. b. c. are given off is rendered 

 more obvious. The white longitudinal lines are 

 the vascular cords, which always appear white 

 amidst the green parenchyma; whilst the trans- 

 verse septa between each articulation, being 

 formed by the branches of these vessels assum- 

 ing an oblique direction, appear, also, of a white 

 colour. The vascular cords, from which the ves- 

 sels of the shoots originate, are easily distin- 

 guished by their greater* size, and by passing di- 

 rectly to the base of each shoot. 



The Culm, as has been described, consists of 

 x3 



