Scientific Name: Rhynchospora macrostachya
Taxonomy Group: Vascular Plants
Range: Nova Scotia
Last COSEWIC Assessment: November 2014
Last COSEWIC Designation: Endangered
SARA Status: No schedule, No Status
PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
Tall Beakrush is a perennial, herbaceous sedge. Flowering stems, arising from a dense clump of basal leaves, reach 150 – 170 cm in the United States and about 100 cm in Canada. Flowers are enclosed within brown scales, with each having male and female parts and six elongate, barbed bristles. Fertilized flowers develop into a hard, flattened achene 5 to 6 mm long, topped by a greatly elongated tubercle.
In Canada, this perennial sedge only occurs along two acidic, peaty lakeshores in southwestern Nova Scotia, where it is disjunct from its main U.S. Atlantic Coastal Plain distribution. Its small population size (ca 700 individuals total in two subpopulations) and very specific habitat needs make it vulnerable to lakeshore development, water regulation (for hydroelectric power), and shading and competition from introduced invasive plants such as Glossy Buckthorn, which benefit from increased concentrations of nutrients in these two lakes.
Under Canada’s Species at Risk Act (SARA), the foremost function of COSEWIC is to "assess the status of each wildlife species considered by COSEWIC to be at risk and, as part of the assessment, identify existing and potential threats to the species".
COSEWIC held two Wildlife Species Assessment Meetings in this reporting year (October, 2014 to September, 2015) from November 23 to November 28, 2014 and from April 27 to May 1, 2015. During the current reporting period, COSEWIC assessed the status or reviewed the classification of 56 wildlife species.
The wildlife species assessment results for the 2014-2015 reporting period include the following:
Special Concern: 21
Data Deficient: 1
Not at Risk: 1
Of the 56 wildlife species examined, COSEWIC reviewed the classification of 40 that had been previously assessed. The review of classification for 24 of those wildlife species resulted in a confirmation of the same risk status as the previous assessment.
The Government of Canada is committed to preventing the disappearance of wildlife species at risk from our lands. As part of its strategy for realizing that commitment, on June 5, 2003, the Government of Canada proclaimed the Species at Risk Act (SARA). Attached to the Act is Schedule 1, the list of the species provided for under SARA, also called the List of Wildlife Species at Risk. Extirpated, Endangered and Threatened species on Schedule 1 benefit from the protection of prohibitions and recovery planning requirements under SARA. Special Concern species benefit from its management planning requirements. Schedule 1 has grown from the original 233 to 521 wildlife species at risk.
Please submit your comments byMay 4, 2016, for terrestrial species undergoing normal consultationsand byOctober 4, 2016, for terrestrial species undergoing extended consultations.For a description of the consultation paths these species will undergo, please see:Species at Risk Public Registry website