Round-leaved greenbrier (Smilax rotundifolia) COSEWIC assessment and status report: chapter 1
Assessment Summary
Assessment Summary – November 2007
Common name : Round-leaved greenbrier – Great Lakes Plains population
Scientific name : Smilax rotundifolia
Status : Threatened
Reason for designation : The species is currently known from 13 highly fragmented populations in Ontario’s Carolinian Zone. Four populations have been found since the previous COSEWIC assessment due to more extensive surveys, and although no population was lost, habitat declines have occurred. Population size and trend are poorly known due to the clonal nature of the species. Many Ontario populations appear to have plants of only one sex and therefore cannot produce seed. The plants, however, are vigorous, long-lived and resistant to habitat changes.
Occurrence : Ontario
Status history : Designated Threatened in April 1994. Status re-examined and confirmed in May 2001 and November 2007. Last assessment based on an update status report.
Assessment Summary – November 2007
Common name : Round-leaved greenbrier – Atlantic population
Scientific name : Smilax rotundifolia
Status : Not at risk
Reason for designation : The species is known from at least 50 sites in southern Nova Scotia where there are estimated to be at least 3,000 to 10,000 individuals (crowns). The actual number of mature individuals for this clonal species is, however, unknown. No declines have been documented and threats are limited.
Occurrence : Nova Scotia
Status history : Designated Not at Risk in November 2007. Last assessment based on an update status report