Scientific Name: Lachnanthes caroliniana
Other/Previous Names: Lachnanthes caroliana
Taxonomy Group: Vascular Plants
Range: Nova Scotia
Last COSEWIC Assessment: November 2009
Last COSEWIC Designation: Special Concern
SARA Status: Schedule 1, Special Concern
Image of Redroot
The Redroot is a member of the bloodwort family. It is named for its slender, blood-red horizontal underground roots. It is distinguished by its yellow-green foliage and flowering stalk. The pale green stem measures 20 to 40 cm tall. A few scattered leaves diminish toward the top of the stem. A cluster of 10 to 30 dull-yellow flowers sits at the crown of the stem. Dense, pale yellow hairs cover the top of the stem and flower cluster. The long narrow leaves on vegetative plants and those at base of the flowering stalk are bright yellow-green and are folded in half lengthwise; several arise from a node on the rhizome.
Distribution and Population
The species occurs sporadically along the Atlantic coastal plain of North America from southwestern Nova Scotia to Mississippi and is also found in Cuba. In Nova Scotia, it occurs in a small area along the shorelines of six interconnected lakes. The plant was first discovered in Nova Scotia in the early 1940s. It wasn't seriously surveyed in Canada until 1989, when populations of a few to about 5000 individuals were found. Populations occurred primarily along the shores of two large lakes. T he most significant concentration is found on the southern end of Big Glode Island. No populations are known to have been extirpated.
The plant is most abundant on cobble beaches with peat or gravel. Preferred habitat is often marked by the occurrence of twig-rush meadows. Fluctuations in water levels control distribution and abundance (see below).
The plant mainly reproduces vegetatively from rhizome buds, but it can also reproduce by seed. Phenology and reproduction are related to water levels. High water levels can inhibit flowering, seedling establishment and vegetative growth. Low levels expose a buried seed bank, thus likely stimulate sexual reproduction. Fluctuating water levels are ideal, since competitors would be set back during high water. Seedling establishment could occur during low water. The plant flowers in August and September in Nova Scotia. Flowering individuals occur only near the upper limit of distribution on the shoreline. Among the thousands of plants seen during a 1989 low-water survey, only 100 were flowering.
The most serious threat to the plant's survival in Nova Scotia is shoreline modification. Such modification is caused by infilling, mowing, dock construction and all-terrain vehicles associated with property development. Water-level stabilization is another threat: several years of stabilized high water levels (caused by humans and beavers) could severely limit seed production, seedling establishment and vegetative reproduction. Damming of Ponhook Lake for hydro generation, were it to occur, could potentially threaten the species.
Federal ProtectionMore information about SARA, including how it protects individual species, is available in the Species at Risk Act: A Guide.
Redroot is protected by the Nova Scotia Endangered Species Act. Under this Act, it is prohibited to kill, harm, or collect this species.
Provincial and Territorial Protection
Status of Recovery Planning
Recovery Strategies :
Name Recovery Strategy and Management Plan for Multiple Species of Atlantic Coastal Plain Flora in Canada
Status Final posting on SAR registry
Atlantic Coastal Plain Flora Recovery Team
Sherman Boates - Chair/Contact - Government of Nova Scotia
Phone: 902-679-6146 Fax: 902-679-6176 Send Email
Samara Eaton - Chair/Contact - Environment Canada
Phone: 506-364-5060 Fax: 506-364-5062 Send Email
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.
11 record(s) found.
- COSEWIC Status Reports (1 record(s) found.)
- COSEWIC Assessments (1 record(s) found.)
- Response Statements (1 record(s) found.)
- Recovery Strategies (1 record(s) found.)
- Management Plans (1 record(s) found.)
- Orders (2 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
- Consultation Documents (1 record(s) found.)
- Residence Description (1 record(s) found.)
- Recovery Document Posting Plans (1 record(s) found.)
COSEWIC Status Reports
Response Statement - Redroot (2010)A highly disjunct Atlantic Coastal Plain species restricted in Canada mainly to two connected, extensive, lakeshore populations in southern Nova Scotia. Comprehensive new surveys and other information indicate that the risk of extinction for this species is less than previously thought. Its lakeshore habitat has been subject to slow but steady loss and decline in quality due to cottage and residential development for 30 to 40 years. Losses are likely to continue through the foreseeable future with new development and intensification of existing development, but the proportion of habitat currently developed is still low and the species’ locally widespread occurrence and asexual reproduction mitigates the threat of extirpation in the short term.
COSEWIC Annual Reports
COSEWIC Annual Report - 2010 (2010)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”. During the past year, COSEWIC held two Wildlife Species Assessment Meetings and reviewed the status of 79 wildlife species (species, subspecies, populations). During the meeting of November 2009, COSEWIC assessed or reviewed the classification of the status of 28 wildlife species. COSEWIC assessed or reviewed the classification of an additional 51 wildlife species (species, subspecies and populations) during their April 2010 meeting. For species already found on Schedule 1 of SARA, the classification of 32 species was reviewed by COSEWIC and the status of the wildlife species was confirmed to be in the same category (extirpated - no longer found in the wild in Canada but occurring elsewhere, endangered, threatened or of special concern). The wildlife species assessment results for the 2009-2010 reporting period include the following: Extirpated: 6 Endangered: 39 Threatened: 16 Special Concern: 17 Data Deficient: 1 This report transmits to the Minister the status of 46 species newly classified as extirpated, endangered, threatened or of special concern, fulfilling COSEWIC’s obligations under SARA Section 24 and 25. A full detailed summary of the assessment for each species and the reason for the designation can be found in Appendix I of the attached report. Since its inception, COSEWIC has assessed 602 wildlife species in various risk categories, including 262 Endangered, 151 Threatened, 166 Special Concern and 23 Extirpated. In addition, 13 wildlife species have been assessed as Extinct. Also, to date, 46 wildlife species have been identified by COSEWIC as Data Deficient and 166 wildlife species were assessed as Not at Risk. This year has been a particularly productive year for COSEWIC’s Aboriginal Traditional Knowledge (ATK) Subcommittee. In April 2010 COSEWIC approved the Aboriginal Traditional Knowledge Process and Protocol Guidelines, providing clear and agreed principles for the gathering of Aboriginal Traditional Knowledge to carry out COSEWIC functions as required under Section 15(2) of SARA (See Appendix III of the attached report). We are grateful for the rich and enthusiastic contribution made by community elders and experts in helping the ATK Subcommittee prepare the ATK protocols.
Recovery Document Posting Plans
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