According to a little Web research this morning, Orange Jewelweed is an introduced species in North America. It is also called Touch-me-not and is actually an Impatiens. It is often used as a natural cure for skin rashes and poison ivy in particular. I found these specimens growing by the small Pond at the Kennebunkport Land Conservancy headquarters at Emmons Preserve.

Sony Alpha NEX 5T with ZEISS Touit 50mm macro. Processed in Snapseed on my tablet. Assembled in Pixlr Express.