**Oak Ridge Reservation Rare Vascular Plants **

**\[updated September 2004\]**

Table 1 lists the vascular plant species currently known to occur on the
ORR that are listed by state or federal agencies as rare. Two of these
species, Michigan lily and hairy sharp-scaled sedge, that were
identified in the past on the ORR have not been found in recent years.

Two species occurring on the ORR, Carey saxifrage *(Saxifraga careyana*)
and purple fringeless orchid (*Platanthera permoena*), were removed from
the state list as of November 17, 1999.

Four species (spreading false-foxglove, Appalachian bugbane, tall
larkspur, and butternut) were formerly under review for listing at the
federal level and were designated under the previously used "C2"
candidate designation. These former C2 species are now informally
referred to as "special concern" species by the U.S. Fish and Wildlife
Service.

Several state-listed plant species currently found on adjacent lands may
be present on the ORR

as well, although they have not yet been reported. (See Table 2.)

Table 1. Oak Ridge Reservation vascular plant species listed by state or
federal agencies (2004)

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  **Species **                                                                                                                                                                                 **Common name **                                                                                                                     **Habitat on ORR **       **Status Code ^a^**
                                                                                                                                                                                                                                                                                                                                                              
  *Aureolaria patula *                                                                                                                                                                         Spreading false-foxglove                                                                                                             River bluff               (C2), T
                                                                                                                                                                                                                                                                                                                                                              
  *Carex gravida *                                                                                                                                                                             Heavy sedge                                                                                                                          Varied                    S
                                                                                                                                                                                                                                                                                                                                                              
  *Carex oxylepis var. pubescens ^b^*                                                                                                                                                          Hairy sharp-scaled sedge                                                                                                             Shaded wetlands           S
                                                                                                                                                                                                                                                                                                                                                              
  *Cimicifuga rubifolia *                                                                                                                                                                      Appalachian bugbane                                                                                                                  River slope               (C2), T
  *Cypripedium acaule *                                                                                                                                                                        Pink lady's-slipper                                                                                                                  Dry to rich woods         E-CE
  *Delphinium exaltatum *                                                                                                                                                                      Tall larkspur                                                                                                                        Barrens and woods         (C2), E
  *Diervilla lonicera *                                                                                                                                                                        Northern bush-honeysuckle                                                                                                            River bluff               T
  *Draba ramosissima *                                                                                                                                                                         Branching whitlow-grass                                                                                                              Limestone cliff           S
  *Elodea nuttallii *                                                                                                                                                                          Nuttall's waterweed                                                                                                                  Pond, embayment           S
                                                                                                                                                                                                                                                                                                                                                              
  *Fothergilla major *                                                                                                                                                                         Mountain witch-alder                                                                                                                 Woods                     T
                                                                                                                                                                                                                                                                                                                                                              
  *Hydrastis canadensis *                                                                                                                                                                      Goldenseal                                                                                                                           Rich woods                S-CE
  *Juglans cinerea *                                                                                                                                                                           Butternut                                                                                                                            Slope near stream         (C2), T
  *Juncus brachycephalus *                                                                                                                                                                     Small-headed rush                                                                                                                    Open wetland              S
                                                                                                                                                                                                                                                                                                                                                              
  *Lilium canadense *                                                                                                                                                                          Canada lily                                                                                                                          Moist woods               T
                                                                                                                                                                                                                                                                                                                                                              
  *Lilium michiganense ^c^ *                                                                                                                                                                   Michigan lily                                                                                                                        Moist woods               T
                                                                                                                                                                                                                                                                                                                                                              
  *Liparis loeselii *                                                                                                                                                                          Fen orchid                                                                                                                           Forested wetland          E
                                                                                                                                                                                                                                                                                                                                                              
  *Panax quinquefolius *                                                                                                                                                                       American ginseng                                                                                                                     Rich woods                S-CE
                                                                                                                                                                                                                                                                                                                                                              
  *Platanthera flava var. herbiola *                                                                                                                                                           Tubercled rein-orchid                                                                                                                Forested wetland          T
  *Populus grandidentata*                                                                                                                                                                      Large-tooth aspen                                                                                                                    Dry woodlands             S
                                                                                                                                                                                                                                                                                                                                                              
  *Ruellia purshiana *                                                                                                                                                                         Pursh's wild-petunia                                                                                                                 Dry, open woods           S
                                                                                                                                                                                                                                                                                                                                                              
  *Scirpus fluviatilis *                                                                                                                                                                       River bulrush                                                                                                                        Wetland                   S
                                                                                                                                                                                                                                                                                                                                                              
  *Spiranthes lucida *                                                                                                                                                                         Shining ladies'-tresses                                                                                                              Boggy wetland             T
  *Thuja occidentalis *                                                                                                                                                                        Northern white cedar                                                                                                                 River bluffs              S
                                                                                                                                                                                                                                                                                                                                                              
  *Viola tripartita var. tripartita *                                                                                                                                                          Three-parted violet                                                                                                                  Rocky woods               S
                                                                                                                                                                                                                                                                                                                                                              
  ^a^ Status codes:                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                                              
  (C2)                                                                                                                                                                                         Special Concern; was listed under the formerly used federal C2 candidate designation. More information needed to determine status.                             
  E                                                                                                                                                                                            Endangered in Tennessee.                                                                                                                                       
  T                                                                                                                                                                                            Threatened in Tennessee                                                                                                                                        
                                                                                                                                                                                                                                                                                                                                                              
  S                                                                                                                                                                                            Special Concern in Tennessee                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                              
  -CE                                                                                                                                                                                          Status due to commercial exploitation                                                                                                                          
                                                                                                                                                                                                                                                                                                                                                              
  ^b\ ^*Carex oxylepis var. pubescens* has not been re-located during recent surveys.                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                                                                              
  ^c^ *Lilium michiganense* is believed to have been extirpated from the ORR by the impoundment at Melton Hill.                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                                                              
  Table 2. Additional rare plants that occur near, and thus may be present on, the ORR (2004)                                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                                                                                                                              
  **Species **                                                                                                                                                                                 **Common name **                                                                                                                     **Habitat on ORR **       **Status code ^a\ ^**
                                                                                                                                                                                                                                                                                                                                                              
  *Agalinis auriculata *                                                                                                                                                                       Earleaved false-foxglove                                                                                                             Calcareous barren         (C2), E
                                                                                                                                                                                                                                                                                                                                                              
  *Allium burdickii ^b^ *                                                                                                                                                                      Ramps                                                                                                                                Moist woods               T-CE
  *Allium tricoccum ^b^*                                                                                                                                                                       Ramps                                                                                                                                Moist woods               S-CE
  *Berberis canadensis *                                                                                                                                                                       American barberry                                                                                                                    Rocky bluff, creek bank   S
  *Gnaphalium helleri *                                                                                                                                                                        Heller's catfoot                                                                                                                     Dry woodland edge         S
  *Lathyrus palustris *                                                                                                                                                                        Marsh pea                                                                                                                            Moist meadows             S
  *Liatris cylindracea *                                                                                                                                                                       Slender blazing-star                                                                                                                 Calcareous barren         T
  *Lonicera dioica *                                                                                                                                                                           Mountain honeysuckle                                                                                                                 Rocky river bluff         S
  *Meehania cordata *                                                                                                                                                                          Heartleaf meehania                                                                                                                   Moist calcareous woods    T
  *Pedicularis lanceolata *                                                                                                                                                                    Swamp lousewort                                                                                                                      Calcareous wet meadow     T
  *Pycnanthemum torrei *                                                                                                                                                                       Torrey's mountain-mint                                                                                                               Calcareous barren edge    S
                                                                                                                                                                                                                                                                                                                                                              
  *Solidago ptarmicoides *                                                                                                                                                                     Prairie goldenrod                                                                                                                    Calcareous barren         E
                                                                                                                                                                                                                                                                                                                                                              
  ^a^ Status codes:                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                                              
  (C2)                                                                                                                                                                                         Special Concern; was listed under the formerly used federal C2 candidate designation. More information needed to determine status.                             
                                                                                                                                                                                                                                                                                                                                                              
  E                                                                                                                                                                                            Endangered in Tennessee                                                                                                                                        
  T                                                                                                                                                                                            Threatened in Tennessee                                                                                                                                        
                                                                                                                                                                                                                                                                                                                                                              
  S                                                                                                                                                                                            Special Concern in Tennessee                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                              
  -CE                                                                                                                                                                                          Status due to commercial exploitation                                                                                                                          
                                                                                                                                                                                                                                                                                                                                                              
  ^b^ Ramps have been reported near the ORR but there is not sufficient information to determine which of the two species is present or if the species may have been introduced by planting.                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                                              
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