Family Apocynaceae.
Habitat Native to tropical America; cultivated as hedge plant in the
plains throughout India.
English Yellow Oleander.
Ayurvedic Pita-Karavira, Ashvaghna, Divyapushpa. (White and red-flowered var. is equated with Nerium oleander, the yellow- flowered var with T peruviana.)
Siddha/Tamil Pachiyalari.
Action See Nerium oleander.
Bark and leaves—bitter cathartic, emetic; poisonous. Roots—a plaster is applied to tumours.
All parts of the plant produce poisonous latex. Karnels contained nearly seven times as much glycosides as leaves, stems, flowers or fruit pulp. The roots and bark also contain glycosides.
Of all Thevetia glycosides, peruvoside is the most important cardiac gly coside. It produced a fall in right arterial pressure and a rise in cardiac output. A few cases of arrhythmia responded well to peruvoside. Thevetin and other glycosides are reported to exhibit digitalis-like effect. As a cardiac glycoside, the potency of neriifolin is moderate. Cerberin is even weaker than neriifolin. Cerebroside is the weakest glycoside in its cardiac effect.
In addition to seeds, neriifolin and peruvoside have been isolated from the bark in small amounts.
660 Thlaspi arvense Linn.
Dosage Root—50—125 mg powder. (CCRAS.)
Thiaspi arvense Linn.
Family Crucfereae; Brassicaceae.
Habitat The temperate and
sub-alpine Himalayas.
English Pennycress, Fanweed.
Folk Drekaa (Laddakh).
Action Astringent, diuretic, blood- purifier. Seeds—stimulant. Plant— a good source of vitamin C (70— 469 mg!100 g). Ripe seeds are poisonous (pouring boiling water over the seeds before use prevents poisoning).
Leaves as well as seeds contain a glucoside, sinigrin.
Thuja orientalis Linn.
Synonym Biota orientalis Endi. ______ Family Cup ressaceae.
F T) Habitat Native to China; planted
