84 EQUISETUMS AND €ALAMITES. 
lie between the groups of vessels. The bast portion (phloem, N aegeli) 
of the bundle consists of three series of cells. The greater portion 
consists of bast-parenchyma of thin-walled narrow cells containing 
starch. Between these parenchymatous cells, either in small grou 
or scattered, are cells which are wider and contain either granular 
contents or air. At the outer side of the bundle a more or less 
ss 
a 
ao 
3 
i aN 2 
2009 
A) 60 
HX 
x Ps og Bony Sena Bu i or Equisetum hyemale. (ArtER Drppey.)— 
me ser " is : renchyma, chy, G starch. e vessels. 
els, ast paren ti. y,, 
me an Seen Hee med hats pee "aaiaabs vessels ‘(siebrib- 
Hyapal y ae of rg ueeerme with thick walls ile small central cavity 
of the 
— epidermis consists of thin-walled cells 
of a brown colon r, and p uces numerous brown-coloured root-hairs. 
Under the pat ars aN is often destroyed in old roots, many 
