Page 47 - CS06_Hudz

Microscopical Characters.—

Upper epidermis is composed of

prominent epidermal cells with

wavy vertical walls and possessing
few or no stomata, frequently with

brown contents. Lower epidermis

of smaller epidermal cells and

wavy vertical walls and numerous
elliptical stomata. Both

epidermises of leaves have

numerous colourless or light brown
glandular trichomes with 2-4 cells.

Fig. Herba Polygoni No subglobular internal glands in
persicariae. mesophyll (a peculiarity

A – Upper epidermis; B – of Polygonum

Lower epidermis; C – Leaf persicaria). Mesophyll contains

margin; 1 – Accrete hairs; 2 large rosettes aggregate of calcium
– a rosette aggregate of oxalate. Accrete hairs occur on a

calcium oxalate. 3 – glandular leaf surface.

trichomes with 2-4 cells