lo 



indicates a frequency toward the lower end of the category (less frequently 

 found in wetlands) . 



Indicator Categories 



Obligate Wetland (OBL). Occur almost always (estimated probability >99%) 

 under natural conditions in wetlands. 



Facultative Wetland (FACW). Usually occur in wetlands (estimated 

 probability 67%-99%), but occasionally found in nonwetlands. 



Facultative (FAC). Equally likely to occur in wetlands or nonwetlands 

 (estimated probability 34%-66%). 



Facultative Upland (FACU). Usually occur in nonwetlands (estimated 

 probability 67%-99%), but occasionally found in wetlands (estimated 

 probability l%-33%) . 



Obligate Upland (UPL). Occur in wetlands in another region, but occur 

 almost always (estimated probability >99%) under natural conditions in 

 nonwetlands in the region specified. If a species does not occur in 

 wetlands in any region, it is not on the National List . 



The wetland Indicator categories should not be equated to degrees of 

 wetness. Many obligate wetland species occur in permanently or 

 semipermanently flooded wetlands, but a number of obligates also occur 

 and some are restricted to wetlands which are only temporarily or 

 seasonally flooded. The facultative upland species include a diverse 

 collection of plants which range from weedy species adapted to exist in 

 a number of environmentally stressful or disturbed sites (including 

 wetlands) to species in which a portion of the gene pool (an ecotype) 

 always occurs in wetlands. Both the weedy and ecotype representatives of 

 the facultative upland category occur in seasonally and semipermanently 

 flooded wetlands. 



RIND (Regional Indicator) 



The estimated probability (likelihood) of a species occurring in wetlands 

 versus nonwetlands in the region. Regional Indicators reflect the 

 unanimous agreement of the Regional Interagency Review Panel. If a 

 regional panel was not able to reach a unanimous decision on a species, 

 NA (no agreement) was recorded in the regional indicator (R_IND) field. 

 An NI (no indicator) was recorded for those species for which insufficient 

 information was available to determine an indicator status. A 

 nonoccurrence (NO) designation indicates that the species does not occur 

 in that region. An asterisk (*) following a regional Indicator identifies 

 tentative assignments based on limited information from which to determine 

 the indicator status. In the listings for the States divided into two 

 regions (Montana, Wyoming, and Colorado), both regional Indicators are 

 reported. 



