Stems are merged lower ends of the secondary axes, Vascular bundles are secondary structures developed within the axes which interconnect with each other to form the central core of the stem and branches and the veins in the leaves.
Yang YenBiology and Microbiology, South Dakota State UniversityBrookings, South Dakota, USA Chi YenTriticeae Research InstituteSichuan Agricultural UniversityChengdu, China
Chapter 1. The two contrary theories about organogenesis in morphology of the higher plants.-chapter 2. Saunders’ Leaf-skin Theory of Stem.- Chapter 3. Leaves are split axes.- Chapter 4. Re-evaluation of the evidences for the Telome Theory.- Chapter 5. What do hooded-awn barley, bitter bamboo, tortoise shell bamboo, paspalum and crabgrass show us?.- Chapter 6. The ontogenesis of higher plants.- Chapter 7. The organogenesis of higher plants.- Chapter 8. Conclusion.
