I'm afraid I don't know what this plant is but I know someone who will, Jan Groth, Program Coordinator for Cochise County Cooperative Extension Master Gardener program. Her information is below. If Jan can't help, write me back directly at firstname.lastname@example.org and I'll be sure to follow up for you.
Correction to phone number for Jan
Phone number is 520-559-7078
The image has been forwarded to Jan.
Can you please call Jan Groth - 520-559-7078. She has a few questions she would like to ask about the plant.