Acorus calamus

Here are mine from Herbal garden samalkha Panipat. Attachments (2)

Calamus derived herbal products were banned in USA as far back as 1968…. because of purported carcinogenicity… apparently there are genetic variations …
I quote from Wikipedia: (do not know whao wrote this wiki article though)
Start Quote: ”  Regulation: Products derived from Acorus calamus were banned in 1968 as food additives by the United States Food and
Drug Administration. [1] The questionable chemical derived from the plant was β-asarone. Confusion exists whether all strains of Acorus
Calamus contain this substance.
Four varieties of Acorus calamus strains exist in nature; diploid, triploid, tetraploid and hexaploid. [2] Diploids do not produce the carcinogenic β-asarone. Diploids are known to grow naturally in Eastern Asia (Mongolia and C Siberia) and North America. The triploid cytotype probably originated in the Himalayan region, as a hybrid between the diploid and tetraploid cytotypes. [3] The North American Calamus is known as Acorus Calamus var. americanus or more recently as simply Acorus americanus. Like the diploid strains of calamus in parts of the Himalayas, Mongolia, and C Siberia, the North American diploid strain does not contain the carcinogenic β-asarone.[4][5][6] Research has consistently demonstrated that “β-asarone was not detectable in the North American spontaneous diploid Acorus [Calamus var. americanus]”.[7]   ” end quote
the quote is from URL: http://en.wikipedia.org/wiki/Acorus and that’s where the references listed in the quotes are…
MY QUESTION: ARE THERE INDIAN ORIGIN PAPERS ABOUT the GENETICS of CALAMUS or VACHA used in Ayurvedic medicine ???
IF anyone knows, could you please share the CITATIONS WITH THE GROUP and ME?

Never saw this plant in wild. Thanks for sharing … Interesting folklore too,