Michaux's Sumac (1 of 3) (IMAGE) Smithsonian Caption Scientists are trying to save the critically endangered Michaux’s sumac -- one of the rarest shrubs in the southeastern United States -- but the plant is not cooperating. Credit Lytton Musselman Old Dominion University Usage Restrictions Please include photo credit information when using the photo. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.