CPC National Collection Plant Profile

Sedum integrifolium ssp. leedyi

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CPC National Collection Plant Profile

Sedum integrifolium ssp. leedyi


Family: 
Crassulaceae  
Common Names: 
doseroot, leedy's roseroot, Leedy's stonecrop
Author: 
(Rosendahl & Moore) Clausen
Growth Habit: 
Forb/herb
CPC Number: 
7501

Distribution
Protection
Conservation
References


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Sedum integrifolium ssp. leedyi is Not Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Lindsey Parsons contributed to this Plant Profile.

 
Sedum integrifolium ssp. leedyi


This subspecies is a glacial relic of the Pleistocene that was widespread at the end of the last glaciation but has become extremely rare in the warmer temperatures of post-glaciation climates. Unfortunately, human activities have exacerbated this decline by disturbing the remaining habitat where this subspecies can still survive. Today it is found in a very unique system that experiences much cooler temperatures than surrounding areas due to cool air that rises through cracks from subterranean caves. This air is thought to create small areas where the temperature more closely resembles that of the Pleistocene Era. These small systems are extremely vulnerable to dumping in sinkholes, clearcutting of upland trees, and anything that alters the water quality and hydrology including development and the use of chemical herbicides and pesticides. As relics, this subspecies is a living fossil that can provide us with a tremendous amount of information about the organisms that lived during the Pleistocene. If we lose this plant, we lose a vital clue to our own history as well as the history of the earth. Perennial plant with waxy leaves. Can tolerate period of water stress. Elongated leafy stem that can become limp in dry weather. Closely packed leaves arise from main stem. Leaves are irregularly toothed and sometimes not toothed at all. Male and female flowers born on separate plants. Flowers have 4-5 petals, and dense heads of flowers at the and of leafy stems. Blooms are dark red, and can be yellow or orange.

Distribution & Occurrence

State Range
  Minnesota
New York
State Range of  Sedum integrifolium ssp. leedyi
Habitat
  Likes cool cliffs. Lives on 'moderate' cliffs, which are cliffs where there are cracks in the rock that go to underground caves, so cold air can come up under the plant. Occasionally the underground caves connect aboveground and uphill from sinkholes. Generally lives on cool water-fed limestone cliffs. Lives on talus slopes or cliffs in which ground water maintains a cool, wet environment throughout the summer. (Sather 1996; USFWS 1992)

Distribution
  Minnesota (Fillmore and Olmsted Co.) and upstate New York (Seneca Lake and Watkins Glen) (USFWS 1992)

Number Left
  There are two sites in upstate New York as described above. Watkins Glen only has one individual present although it is in good condition. Four populations are found in Minnesota with each containing several thousand plants. (USFWS 1992) Only the populations at Watkins Lake and Whitewater Wildlife Management Area, Minnesota are located on public land.

Protection

Global Rank:  
G5T1
 
9/26/1997
Guide to Global Ranks
Federal Status:  
LT
 
10/24/1996
Guide to Federal Status
Recovery Plan:  
Yes
 
9/17/1993

State/Area Protection
  State/Area Rank Status Date  
  Minnesota S1 T 7/1/1996  
  New York S1 E 2/17/1989  

Conservation, Ecology & Research

Ecological Relationships
  This subspecies is generally associated with other species that are dependent on the unusual conditions of these cliff habitats including Whitlow grass and two rare snails of the genus Navisuccinea. (USFWS 1992)

Threats
  Increased runoff from disturbed land
Lakeside residential development and concurrent tree clearing
Ground water contamination
Hydrologic changes
(USFWS 1992)

Current Research Summary
  None known.

Current Management Summary
  None known.

Research Management Needs
 

Ex Situ Needs
 

References

Books (Sections)

Kartesz, J.T. 1999. A synonymized checklist of the vascular flora of the U.S., Canada, and Greenland. In: Kartesz, J.T.; Meacham, C.A., editors. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden. Chapel Hill, NC.

Journal Articles

Olfelt, J.P. 1998. Population Biology of Sedum integrifolium ssp. leedyi. Dissertation Abstracts International. 59-07, Section B: 3172.

Olfelt, J.P.; Furnier, G.R.; Luby, J.J. 1998. Reproduction and development of the endangered Sedum integrifolium ssp. leedyi (Crassulaceae). American Journal of Botany. 85, 3: 346-351.

Olfelt, J.P.; Furnier, G.R.; Luby, J.J. 2001. What data determine whether a plant taxon is distinct enough to merit legal protection? A case study of Sedum integrifolium (Crassulaceae). American Journal of Botany. 88, 3: 401-410.

USFWS. 1992. Determination of Threatened Status for Sedum integrifolium ssp. leedyi (Leedy's roseroot). Federal Register. 57, 78: 14649-14653.

Vetter M.A. 1981. The Physiological Ecology of Sedum lanceolatum in the Colorado Front Range. Dissertation Abstracts International. 43-02, Section B: 0334.

Reports

Sather, N. 1993. Leedy's Roseroot: A Cliffside Glacial Relict. St. Paul, MN: Minnesota Department of Natural Resources. p.10.

USFWS. 1998. Sedum integrifolium ssp. leedyi (leedy's roseroot) Recovery Plan. Ft. Snelling, Minnesota: U.S. Fish and Wildlife Service. p.31. [19297].


  This profile was updated on 3/4/2010
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