Guide to the Vascular Flora of the Savannas and Flatwoods of Shaken Creek Preserve and Vicinity (Pender & Onslow Counties, North Carolina, U. S. A.) Thornhill, Robert Krings, Alexander Lindbo, David Stucky, Jon Biodiversity Data Journal 2014 2 1099 1099 Mill. Liliopsida Iridaceae Sisyrinchium CoL Plantae Sisyrinchium angustifolium Asparagales 0 1099 Tracheophyta species angustifolium  Distribution Wet pine flatwoods (WPF-T), wet pine savannas (WLPS, VWLPS).  Notes Occasional. Mar-Jun; May-Jul. Thornhill 195, 1401 (NCSC). [= RAB, FNA, Weakley]