Rhynchospora marliniana (Cyperaceae), a new species of Rhynchospora sect. Plumosae, from northern Central America and southeastern North America (Cyperaceae)

Summary. The new species, Rhynchospora marliniana Naczi, W. M. Rnapp & W. W. Thomas, is described, illustrated, and compared with morphologically similar species. Images are provided of its habitats, which are sunny, wet, and nutrient-poor savannas, pinelands, and streamsides in Belize, Honduras, Mexico, Nicaragua, and the southeastern USA. It is unique in Rhynchospora sect. Plumosae by having perianth brisdes that are plumose only at their bases and have a smooth zone between the plumose and minutely denticulate zones. Additional diagnostic characters are dark brown proximal leaf sheaths and perianth brisdes that exceed the tubercle. Rhynchospora marliniana survives burning, and quickly initiates both vegetative and reproductive growth after fire. 

Naczi, R.F.C., W.M. Knapp, & W.W. Thomas. 2012. Rhynchospora marliniana (Cyperaceae), a new species of Rhynchospora sect. Plumosae, from northern Central America and southeastern North America (Cyperaceae), Kew Bulletin 67:1–8.  10.1007/s12225-012-9416-y