x] ROOTS. 347 



diagrammatically sketched in fig. 92 illustrates very clearly the 



R" 



Fig. 92. . Tangential section through a node of Galamites, showing a root in 



organic connection with the stem. 

 ij, JJ'. Boot (Aatromyelon) in transverse and oblique section, x, xylem ; 



m, primary medullary ray ; t, leaf -trace ; s, Stigmarian appendage. 

 iJ", the inner portion of one of the xylem wedges of U' more highly magnified. 



Sketched from a section in the Cambridge Botanical Laboratory Collection. 



