Phloem: Cell Types and Developmental Aspects

This chapter contains sections titled: Cell Types of the Phloem The Angiospermous Sieve-Tube Element Companion Cells The Mechanism of Phloem Transport in Angiosperms The Source Leaf and Minor Vein Phloem The Gymnospermous Sieve Cell Strasburger Cells The Mechanism of Phloem Transport in Gymnosperms Parenchyma Cells Sclerenchyma Cells Longevity of Sieve Elements Trends in Specialization of Sieve-Tube Elements Sieve Elements of Seedless Vascular Plants Primary Phloem References