Beth, It's like Brassica sp. but actually is Barbarea vulgaris, Winter Cress or Yellow Rocket. I first saw it in southeast Wisconsin about 20 years ago. Now, it's a common naturalized alien that is aggressively invasive in recently disturbed areas in nearly every county in our state and throughout the upper midwest. It becomes pretty dominant in the second or third year after the disturbance, but is less successful at invading areas with a long legacy of dense native grasses. I've pulled quite a few in prairie/savanna restorations that I've worked on or visited. I've seen entire fallow fields and roadside strips that were 90% alien cress. . Regards,
Paul ----- Original Message ----- From: Beth Koebel To: [email protected] Sent: Monday, April 20, 2009 5:48 PM Subject: [ENTS] Need help in IDing a flowering plant ENTS, I have attach a photo of a flowering plant that I found while on a "field trip" with my Master Naturalist class this past Saturday. It was located on a ridge top near the edge of the forest along a clearing for power lines through Meremac State Park, Missouri. The soil appeared to have been thin and cherty on top of dolamite. The group came up with that it was invaisive probley dropped by the power line crews. Thanks for your help. Beth "He plants trees to benefit another generation." --Caecilius Statius ------------------------------------------------------------------------------ --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -~----------~----~----~----~------~----~------~--~---
