Scientific Name: Agalinis aspera
Taxonomy Group: Vascular Plants
Last COSEWIC Assessment: April 2006
Last COSEWIC Designation: Endangered
SARA Status: Schedule 1, Endangered
Image of Rough Agalinis
Rough Agalinis is an annual herb that reaches 8 to 35 cm in height in Manitoba specimens. It has a slender, erect stem with very little branching. The leaves of this flowering plant are hairless and rough to the touch, hence the common name Rough Agalinis. The long, narrow leaves measure 1 to 4 cm in length and 0.8 to 1.5 mm in width. They are arranged in pairs on the stem. The flowers are purple-pink and are borne in elongated clusters on slender, nearly erect stalks. Each cluster has 4 to 18 flowers. Each flower lasts for only a day, so only one or two flowers are seen at a time. The fruit is a dark brown oval-shaped capsule. This dry fruit contains numerous tiny diamond-shaped seeds.
Distribution and Population
Rough Agalinis occurs throughout the central plains of North America from Manitoba to Texas. It is probably most common in Iowa and Nebraska, but it has also been recorded in Illinois, Kansas, Arkansas, Louisiana, Missouri, Oklahoma, northern Texas, southwestern Minnesota and Wisconsin, and eastern North Dakota and South Dakota. The distribution in Canada is limited to 11 known sites from six rural areas in southern Manitoba—Grosse Isle, Warren, Woodlands, St. Laurent, Poplar Point, and Brandon. The Canadian population of Rough Agalinis was very small in 2004, but it is possible that it fluctuates from year to year. Numbers of plants were very small at all locations, ranging from one to perhaps a maximum of 50 plants, with a total likely not exceeding 230 plants. Previous studies are not available to establish trends.
This is a prairie species found in wet meadows that are often at risk due to drainage or heavy grazing (this type of habitat is often used for pasture). The plants occur where vegetation is sparse and open, allowing full exposure to the sun. The soil is alkaline, with exposed patches of bare stony soil and limestone gravel. Soil disturbance appears to be tolerated. The Canadian sites represent remnant prairie habitats found primarily along roadsides.
Rough Agalinis is an annual species that blooms from late July or early August until the end of August or early September. The large flowers attract pollinating insects, such as bumblebees, which ensure fertilization. This means that a plant isolated from other plants of the same species may still be able to produce seed. The anatomy of the flowers also seems to indicate that Rough Agalinis is capable of self-fertilization, meaning that it can use its own pollen for fertilization. This phenomenon has not been studied in Rough Agalinis, but it would be a significant feature considering the small size of the Manitoba populations. In September, each capsule produces numerous small light seeds, which are probably dispersed locally by the wind, although some may be picked up on the feet of birds and other animals. Like all Agalinis species, Rough Agalinis is hemiparasitic, meaning that it relies on other flowering plants for some of its nutrients. The plant connects to the host plant via specialized roots called haustoria, by which it is able to obtain water and dissolved nutrients. Host preference is not currently known.
All prairie habitat suitable for Rough Agalinis has been reduced by the expansion of agricultural activity in the province of Manitoba. The species occupies small prairie remnants, mainly along roadsides, in the southern portion of the province. Eight of the 11 Canadian sites of Rough Agalinis are in road allowances, where the right combination of bare soil and sparse vegetation is found. Any major disturbance of the road allowance for road expansion or road straightening would put these populations at risk. Mowing late in the season, when the flowers and capsules are present, could pose a threat. Extensive damage to the seed capsules has been observed at Woodlands as a result of late-season mowing. The impact of fire on this species is currently unknown, but it appears that extensive burning undertaken at the Grosse Isle prairie reduced the population there. Overgrazing could pose a threat, particularly at the Poplar Point sites, where the impact of grazing appears to be significant. Lastly, the populations may be at risk simply because of their small size.
Federal ProtectionThe Rough Agalinis is protected under the federal Species at Risk Act (SARA). More information about SARA, including how it protects individual species, is available in the Species at Risk Act: A Guide.
In Manitoba, Rough Agalinis receives no protection under provincial legislation.
Provincial and Territorial Protection
Status of Recovery Planning
Recovery Strategies :
Name Recovery Strategy for the Rough Agalinis (Agalinis aspera) in Canada
Status Final posting on SAR registry
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.
9 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.)
- Orders (2 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
- Consultation Documents (1 record(s) found.)
- Recovery Document Posting Plans (1 record(s) found.)
COSEWIC Status Reports
COSEWIC Annual Reports
COSEWIC Annual Report - 2006 (2006)2006 Annual Report to the The Minister of the Environment and the Canadian Endangered Species Conservation Council (CESCC) from the Committee on the Status of Endangered Wildlife in Canada.
Recovery Document Posting Plans
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