Land Plants - invasive

Old Man's Beard (Clematis vitalba) on Jul 20, 2009

Submitter has sample
EDRR Status: Local expert notified

Description of specimen

Growing in the shade of oak and maple understory. Both plants have completely overgrown blackberries and other shrubs in area and climbed approximately 15 feet up trees. Plants are vines with compound leaves. Leaves are opposite and leaflets are heart shaped and toothed along edges. Flowers white with four petals and in terminal axillary panicles. Stems of plant somewhat groved. Stamens or styles, not sure which and 35 years since plant anatomy, are numerious and white and feathery on tips.


Hi Bruce!

Thanks so much for reporting clematis vitalba. This looks like a pretty high priority infestation given I don’t believe it is abundant in that area. I have forwarded you report to Glenn Miller at ODA for suggestions on how to respond.


Tania Siemens
Invasive Species Research Assistant
Oregon Sea Grant Extension
Early Detection Rapid Response Coordinator
The Nature Conservancy
cell: 541-914-0701

Tania Siemens
July 20, 2009, 6:22 a.m.