Aconitum ferox
[file:Aconitum ferox kz01.jpg|thumb|Aconitum ferox]
Aconitum ferox is a member of the monkshood genus Aconitum of the Ranunculaceae. The common name by which it is most often known in English is Indian Aconite, while the Hindi names used by practitioners of Ayurveda include वत्सनाभ vatsanabha and महाविषा mahavisha.
A tuberous-rooted, herbaceous perennial reaching 1.0 metre tall by 0.5 metres wide and tolerant of many soil types, Aconitum ferox forms the principal source of the Indian poison known variously as bikh, bish, and nabee. It contains large quantities of the extremely toxic alkaloid pseudaconitine and is considered to be the most poisonous plant found in the Himalaya.
The symptoms of poisoning usually appear 45 minutes to an hour after the consumption of a toxic dose and consist of numbness of the mouth and throat and vomiting. Respiration slows, with blood pressure falling synchronously, while the heart rate slows to 30-40 beats per minute. Consciousness characteristically remains unclouded until the end, which consists usually of death by asphyxiation, although occasionally of death due to cardiac arrest.
Monier-Williams lists it as one of the definitions of
Range
The species is native to the eastern Himalayas from central Nepal eastward through the north of West Bengal, Sikkim, Bhutan and Arunachal Pradesh to Assam.Habitat
A. ferox grows at altitudes of 2,100-3,600m, favouring shrubberies and forest clearings. The flowering period is from August to October.Mountain named for species
The plant formerly grew abundantly at Sandakphu, which is a mountain peak in the Singalila Ridge, forms the highest point of the Darjeeling Hills and lies on the border between the Indian State of West Bengal and Nepal. Indeed, this former abundance is reflected in the name Sandakphu itself, which derives from the Lepcha language and translates as "the height of the poisonous plant". Such was the danger of fatal poisoning to sheep and cattle being driven through the area that they had to be muzzled to prevent them grazing/browsing upon the extremely toxic A. ferox and certain toxic Rhododendron species which were also present.Medicinal use in Sikkim
With due caution in regard to its extreme potency and toxicity, the plant has long been used in the folk medicine of the Indian state of Sikkim on the southeastern edge of the Tibetan Plateau.After unspecified "proper curing" aimed at "mitigation of the virulent poison" the drug prepared from the tuberous root is much used as an analgesic for the relief of chronic pain. Other properties attributed to the plant are those of being sudorific, diuretic, expectorant and
antipyretic, while diseases and conditions in the treatment of which it has been employed include diabetes mellitus, asthma, ear infections, nasal infections, leprosy, paralysis and arthritis. Rai and Sharma note also that:
The root is also used as an antidote to hartal, believed to be a lethal poison of local origin.
Medicinal Plants of the Sikkim Himalaya
The word rendered here as hartal is referable to the Hindi word हरताल, having the same spelling in Devanagari as the Nepali word haratāla - both of which are archaic designations for minerals containing the poisonous element arsenic - particularly orpiment and its associated realgar. Regarding the local availability of ores of arsenic, the arsenical minerals arsenopyrite and jordanite are to be found in Sikkim in the Rangpo polymetallic deposit of Pakyong district, East Sikkim. A local need in Sikkim for a antidote to poisoning by arsenic compounds may be explained by the frequent use of such compounds in combination with herbal medicines in the alchemical Ayurvedic practice known as Rasashastra.