Plate I\' — Ueproscnts a branch of Ihc Russian 'riustli! after it has become nearly j?ro\vn, but before it l^ccomes 
IT 
stiff, spiny and wamdy. {«) Represents a section of a branch shc.wing spines which inclose the young fleowr 
parts. (^) Represents the coiled einbryo or yovmg plant of the seed after the thin coveiing is rubbed awavJ 
(c) Represents the blossom, (tf) Represents one of the spines, somewhat enlarged in the drawing, (c) oifl 
of the petals of the llower enhirged. 
