I found it on the BlueBird Nursery website. It is hardy to zone 3, more cold and heat tolerant than other aristolocheas, gets about 3' tall, as you said. Has yellow flowers, and balloon shape seed pods.

Susan

That definitely is a hardy Dutchman's pipe... I guess that growing in Mongolia would make cold hardiness a must. :)

Thanks for that info, Susan. Maybe A. contorta hasn't been in this country for long, as not many growers or garden centers have it, and there is so little written about it. Except for a lot of Chinese medicinal or herbal sites that talked about its uses in treating various conditions.