PLATE II 



Chrysothamnus nauseosus (6a and 6b) 



Vessels present, grouped in patterns forming concentric 

 bands; rays three to many cells in width, often massive, 

 dispersed between uniseriate rays. 



Chrysothamnus viscidiflorus (5a and 5b) 



Vessels present, grouped in patterns forming slight arcs; 

 rays three to many cells in width, often massive, dispersed 

 between uniseriate rays. 



