MISSION - The National Butterfly Center is calling all citizen scientists to assist with a native plant survey across one dozen South Texas counties, in search of two species of succulent, Texas Tuberose (Manfreda maculosa) and Longflower Tuberose (Manfreda longiflora). These two plant species are limited in both range and in numbers. As a result, the butterfly that depends upon it as host, the Manfreda Giant Skipper (Stallingsia maculosus), has practically disappeared from the landscape. Thanks to funding from the James A. “Buddy” Davidson Charitable Foundation, the center is organizing an all-volunteer effort to identify manfreda populations on public and private ...