When confirmed by an expert, I would like to put a notice out on our neighborhood Google Groups. If you have a good website reference for those interested in information about the plant and effective removal, please advise. Thank you.

Robyn L.

Reporter
May 4, 2015, 4:36 a.m.

Thanks for the report Robyn. I am checking with the Benton Soil & Water Conservation District staff to see if someone there may be able to confirm your report.

The photos you shared also look very much like wild cucumber (Marah oreganus) which is a native vine with a white flower. Here is a link to some good photos of the native: http://www.pnwflowers.com/flower/marah-oreganus.

Here is a photo of the white bryoni flower: http://www.palouseprairie.org/bryonia_alba/bryonia_alba_flower_bud.png

Here is a profile of the plant from the Washington Noxious Weed Control Board:
http://www.nwcb.wa.gov/detail.asp?weed=14

I will get you connected with a local invasive plant specialist soon!

Cheers,
Beth Myers-Shenai, Oregon Department of Agriculture.

Beth Myers-Shenai
May 13, 2015, 1:35 a.m.

Hello Beth and Robyn- Crystal and I looked at the images that Robyn submitted. That is Marah oreganus- a native plant commonly found in Benton County. Thank you for submitting images and making the report. I am so glad that you did and also glad that it's a case of mistaken identity.
Heath Keirstead
Benton SWCD

Beth Myers-Shenai
May 13, 2015, 3:19 a.m.