Image courtesy of the slide collection of Jack Harper.
Image courtesy of the slide collection of Jack Harper.
Image courtesy of the slide collection of Jack Harper.
Image courtesy of Larry Kuhns.
Image courtesy of Larry Kuhns.
Image courtesy of Larry Kuhns.
Comparison of mallow (left) and ground ivy (right). Image courtesy of Larry Kuhns.
Comparison of mallow (left) and ground ivy (right). Image courtesy of Larry Kuhns.
Ground ivy and common mallow. Image courtesy of Larry Kuhns.
Image courtesy of Matthew Naedel.
Image courtesy of Matthew Naedel.
Central, elongated stem. Image courtesy of Matthew Naedel.