Main Stem

Surface view: Epidermal cells are axially elongated with slightly wavy anticlinal walls and a warty cuticle; paracytic stomata are arranged in several longitudinal rows in the grooves between the ribs; subsidiary cells have ridges of cellulosic wall thickening arranged radially around the sto-matal pore.

Transverse section: The outline shows a regular sequence of ribs and grooves; beneath the epidermis are large bundles of fibers at the ribs and small ones at the grooves; chlorenchyma is located on the slopes of the ribs between fiber groups; broad cortex; a ring of vascular bundles occurs interior to the endodermis; a series of lacunae are present, with central lacuna the largest; a ring of small lacunae is located just outside the central cavity, each at the interior end of a vascular bundle and radially aligned with a rib; a second ring of lacunae is located exterior to these in the cortex; each lacuna in this ring is alternate with the lacunae of the interior ring, radially aligned with a groove, and of a larger diameter; conspicuous endodermis.

Longitudinal section: Scalarform vessels. B. Lateral Stem

Transverse section: Alate, usually with four wings; wing tips characterized by bicellular papillae, each cell sharing a common wall; papillae appear rectangular, trapezoidal, or, rarely, conical in outline; fibers occur at the wing tips; endodermis is present; vascular bundles surround a central pith; lacunae are absent. A transverse section through the main stem (preferably in the middle region of the plant) is essential in order to distinguish Equisetum arvense raw material from that of its congeners.

Powder: Fragments of epidermis with bicellular papillae; paracytic stomata with radial striations on subsidiary cells; fibers; scalariform vessels; parenchyma.

pap f

Chinese Herbs

Chinese Herbs

Worried For Your Health More Than Ever? Want To PREVENT Rather Than CURE Your Illness? Then WE are the only ones who can answer YOUR concern of time by presenting the exclusive work piece, the explicit and special eBook on CHINESE HERBS- the call of time.

Get My Free Ebook

Post a comment