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 (Michx.) Elliott Magnoliopsida Asteraceae Pterocaulon CoL Plantae Pterocaulon pycnostachyum Asterales 0 1099 Tracheophyta species pycnostachyum  Distribution Pine/scrub oak sandhills (PSOS-MT), mesic pine savannas (MPS-CP).  Notes Occasional. May-Jun. Thornhill 387, 1296 (NCSC). Specimens seen in the vicinity: Sandy Run [Neck]: Levy s.n. (DUKE!), Taggart SARU 278 (WNC!), Wilbur 53637, 55274 (DUKE!). [= RAB, FNA, Weakley]