Week 15: Characteristics of wood: diffuse porous and ring porous, sap and heart wood, soft and hard wood, annual rings.

Chapter 26: Secondary Growth in Stem, page 614,

In book

Raven Biology of Plants by Ray F. Evert, Susan E. Eichhorn. 8th Edition. W. H. Freeman and Company Publishers. 2013.

 

Chapter 8: Structure of Woody Plants, page 195,

In book

Botany: an introduction to plant biology by James D. Mauseth.  2/e, Multimedia enhanced edition . Jones  and  Bartlett  Publishers. 1998.