Characteristics of the phloem and the cortex

Characteristic of all species is the tangential arrangement of sieve tubes and parenchyma (Figs. 13 and 14), the presence of ray dilatations (Figs. 13 and 15) and the occurrence of rhaphides. Rhaphides occur in enlarged ray-parenchyma cells. Prismatic crystals occupy lateral ray cells in Parthenocissus (Fig. 16). Rectangular groups of tangentially oriented sclereids occur in Par-thenocissus tripartituts and Vitis vinifera (Fig. 14). Crystal druses and laticifers occur in the cortex of Cissus and Parthenocissus

Was this article helpful?

0 0
Building Your Own Greenhouse

Building Your Own Greenhouse

You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!

Get My Free Ebook


Post a comment