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Myanmar Herbal Pharmacopoeia Volume II
Synonym(s)
- Echites scholaris L. Pala scholaris (L.) Roberty
Other name(s) - Alstonie des ecoliers (French) Chatium, Chattiyan (Hindi) Chhatim (Bengali) Dita bark, Indian devil tree, Milky Pine, Blackboard Tree (English) Dita (Philippines) Lame (Sundanese) Popeal khe (Cambodian) Pulai,rejang, Jelutong, basong (Malaysian) Pule (Javanese) Saptaparna,Visalatvak (Sanskrit) Sativn Tree (Indian) Tin ped, palai (Thai) Part (s) used
- Dried stem bark
Definition Alstoniae scholaris Cortex consists of rough, grey, mature stem bark of Alstonia scholaris (L.) R. Br. (Apocynaceae).
Description of the part used Macroscopic characteristics The bark about half inch thick; externally mottled brownish and slightly smooth, but marked by shallow fissures. Internally the bark is light brown and slightly striated. Odour pleasant and bitter taste.
Microscopic characteristics Transverse section of Alstonia scholaris (L.) R.Br. mature stem bark shows: 1. phellem or cork layer, the outermost part, 10-20 layers of thin-walled, slightly suberized and radially arranged cork cells. Some cork cells filled with brown content. 2. interior to the cork layer, a few-layered of phelloderm composed of somewhat tangentially elongated cells intermingled with sclerenchymatous cells
