Page 148 - Pharmacognosy 2 PG303

Pharmacognosy-2 (PG303)

Powder

1- Upper epidermis: 1- Lower epidermis: 1- Up
no stomata. diacytic stomata. stoma
2- Lower epidermis: 2- Glandular trichomes: tricho
anomocytic stomata. 2- Un
3-Trichome: unicellular, Labiaceous hair, 3- Lo
conical with lignified wall. capitate.
4- Sclereids of mesocarp 3-Uniseriate multicellular Di
non.gl. labi
tric

Active Alkaloids: Lobeline (major) Volatile oil: containing Volat
menthol (50%) Catec
constituents Catechol tannins