Green Aliens

It's winter.  Mostly.  The plants are dormant but there's no snow to brighten the ground.  With temperatures in the 40's and overcast skies the landscape is brown in Pittsburgh.

But what is this?  A spot of green on this last day of 2011.  What plants are braving the cold in Schenley Park?

Two alien invasives:

Goutweed ...

... and Garlic mustard.

Perhaps it's not wintry enough for them.

(photos by Kate St. John)

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