PLATE CXXI. SOUR-WOOD. 



1. A flowering branch with long one-sided racemes of flowers clustered in an open panicle, x i. 



2. A few racemes of fruit, x I. 



3. Cross-section of a capsule showing five cells filled with seeds, slightly enlarged. 



4. A winter twig, enlarged. 



5. Section of a winter twig, enlarged. 



