Specimen courtesy of Plant Resources Center, The University of Texas at Austin- herbaceous member of the agave family with rosette of basal leaves and somewhat woody flowering stalk
- leaves light green with brownish spots, somewhat succulent (as in other Manfreda species), up to 16 inches long and 2 inches wide
- flowering stalk typically 6-7 feet tall
- flowers with a waxy, greenish tube usually ca. 1/2 inch long capped by 6 recurved perianth lobes
- stamens exerted at least 11/2 inches beyond perianth
- endemic to South Texas and northern Tamaulipas
- rarity status unclear—need information!
- named for Maj. Arnold M. Siler, who collected the first specimens
Photo credit: Lisa Williams