Orobanche hederae is established on the UC Berkeley campus. As the name suggests, it is parasitic on ivy (Haldera spp). It has an interesting history too. Read on at the link: https://flickr.com/photos/xerantheum/… Nhu On Sun, Feb 22, 2015 at 10:55 AM, Jim McKenney <jamesamckenney@verizon.net> wrote: > But since they are parasitic, seed is prohibited entry to the US. >