26. Summary - endangered and threatened species 



Name of species: Llstera australis (Southern twayblade) . 



Species legal status and authority : Endangered peripheral 

 in North Carolina (Cooper et al. 1977). 



Number of populations on site: One reported by Pat Gammon, 

 Dismal Swamp National Wilflife Refuge. 



Number of individuals per population: Unknown. 

 Size or maturity of individuals: Unknown. 



Phenology of population: Unknown. Highly ephemeral species. 



_ ^ j_ • 0/ not easily recognizable at the time 



Eg: vegetative a j- ,.,.,,. 



" *= of year during which this survey 



flowering % was conducted, 

 fruiting % 

 General vigor of population: Unknown. 



Disturbance or threats to population: None known. 



Habitat characteristics 



Plant community: CT-A. Fagus grandifolia 

 Topography: Gently rolling eolian ridges of low relief. 

 Soil series: Unknown. 

 Microclimate: Warmer and drier than local climate. 



Drainage basin: On ill-defined divide between Pasquotank, 



Little and Perquimans Rivers. 



Otner plants and animal species present: 



Aerial or detailed maps with populations clearly marked; 



43 



