> **OPTIMAL SURVEY WINDOWS FOR NORTH CAROLINA'S FEDERALLY THREATENED AND
> ENDANGERED PLANT SPECIES**

  ---------------------------- ------------------ ------------ -----------------------
  **SCIENTIFIC NAME**          **COMMON NAME**    **STATUS**   **SURVEY WINDOW**

  *Aeschynomene virginica*     Sensitive          Threatened   mid July - October
                               joint-vetch                     

  *Amaranthus pumilus*         Seabeach amaranth  Threatened   July - October

  *Cardamine micranthera*      Small-anthered     Endangered   April - May
                               bittercress                     

  *Carex lutea*                Golden sedge       Endangered   mid April - mid June

  *Echinacea laevigata*        Smooth coneflower  Endangered   late May - October

  *Geum radiatum*              Spreading avens    Endangered   June - September

  *Gymnoderma lineare*         Rock gnome lichen  Endangered   year round

  *Hedyotis purpurea* var.     Roan Mountain      Endangered   June - July
  *montana*                    bluet                           

  *Helianthus schweinitzii*    Schweinitz\'s      Endangered   late August - October
                               sunflower                       

  *Helonias bullata*           Swamp pink         Threatened   April - May

  *Hexastylis naniflora*       Dwarf-flowered     Threatened   March - May
                               heartleaf                       

  *Hudsonia montana*           Mountain golden    Threatened   late May - early June
                               heather                         

  *Isotria medeoloides*        Small whorled      Threatened   mid May through early
                               pogonia                         July

  *Liatris helleri*            Heller\'s blazing  Threatened   July - September
                               star                            

  *Lindera melissifolia*       Pondberry          Endangered   February - October

  *Lysimachia asperulaefolia*  Rough-leaved       Endangered   mid May - June
                               loosestrife                     

  *Oxypolis canbyi*            Canby\'s dropwort  Endangered   mid August - September

  *Ptilimnium nodosum*         Harperella         Endangered   July - October in
                                                               periods of low water

  *Rhus michauxii*             Michaux\'s sumac   Endangered   May - October

  *Sagittaria fasciculata*     Bunched arrowhead  Endangered   mid May - July

  *Sarracenia oreophila*       Green              Endangered   late April - October
                               pitcher-plant                   

  *Sarracenia rubra* ssp.      Mountain sweet     Endangered   April - October
  *jonesii*                    pitcher plant                   

  *Schwalbea americana*        American chaffseed Endangered   May - August (1-2
                                                               months after a fire)

  *Sisyrinchium dichotomum*    White irisette     Endangered   late May - July

  *Solidago spithamaea*        Blue Ridge         Threatened   July - September
                               goldenrod                       

  *Spiraea virginiana*         Virginia spiraea   Threatened   May - early July

  *Thalictrum cooleyi*         Cooley\'s          Endangered   mid June - early July
                               meadowrue                       

  These recommended survey                                     
  windows were determined from                                 
  species recovery plans,                                      
  field observations and                                       
  herbarium specimens at the                                   
  North Carolina State                                         
  University herbarium. For                                    
  additional information about                                 
  these species, please visit                                  
  the U.S. Fish and Wildlife                                   
  Service web pages at                                         
  http://endangered.fws.gov/                                   
  or http://nc-es.fws.gov.                                     
  Dale Suiter, USFWS, Raleigh                                  
  Ecological Services,                                         
  919-856-4520 ext. 18,                                        
  Dale_Suiter@fws.gov, revised                                 
  January 2006                                                 
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