CPC National Collection Plant Profile

Amorpha crenulata

Photographer:
Jennifer Possley

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CPC National Collection Plant Profile

Amorpha crenulata


Family: 
Fabaceae  
Common Name: 
crenulate lead-plant
Author: 
Rydb.
Growth Habit: 
Shrub
CPC Number: 
107

Distribution
Protection
Conservation
References
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Amorpha crenulataenlarge
Photographer: Jennifer Possley

Amorpha crenulataenlarge
Photographer: Jennifer Possley


Amorpha crenulata is Fully Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Meghan Fellows contributed to this Plant Profile.

 
Amorpha crenulata


Amorpha herbacea var. crenulata, a semi-deciduous shrub, has several flower spikes that range in color from white and orange to blue and purple. The small, dark green leaflets are numerous (25-35) on a reddish branch. Amorpha herbacea var. crenulata is known from the Miami Rock Ridge Pinelands, an extremely rare and threatened ecosystem which contains over 40 endemic species (USFWS 1988).

Distribution & Occurrence

State Range
  Florida
State Range of  Amorpha crenulata
Habitat
  Amorpha herbacea var. crenulata can be found in several habitats: in pine rocklands, pinelands and hammock edges (Wilbur 1964, USFWS 1988), vacant lots, marl prairie, fire-maintained areas (Coile 2000). Historically, this species has also been seen in the edges of wet prairies in Dade County (Kernan 1995, 1999). Communities associated with seasonally hydrated soils and frequent burning (USFWS 1988, Abrams and Hulbert 1987, Tester 1996). This species can tolerate varying light conditions, soil depth, and litter depth (Papanastasis et al. 1997, 1998).

Distribution
  Historically, Amorpha herbacea var. crenulata was found in pinelands from the Little River in NE Dade County to Cutler (USFWS 1988). It now occurs in 5-6 populations in the south Miami/Kendall area.

Number Left
  Approximately five populations with less than 1500 plants (USFWS 1988)

Protection

Global Rank:  
G4T1
 
12/6/1993
Guide to Global Ranks
Federal Status:  
LE
 
7/18/1985
Guide to Federal Status
Recovery Plan:  
Yes
 
10/7/1988

State/Area Protection
  State/Area Rank Status Date  
   

Conservation, Ecology & Research

Ecological Relationships
  Amorpha herbacea var. crenulata is associated with the following species: Pinus elliottii var. densa, Sereona repens, Sabal palmetto, Rhus copallina var. leucantha, Schizachyrium rhizomatum, Ruellia succulenta, Paspalum monostachyum, Buchnera americana (USFWS 1988).
Mycorrhizal dependence has been demonstrated (Fisher, pers. comm.)

Threats
  Amorpha herbacea var. crenulata is threatened by habitat destruction, invasive species (Schinus terebinthifolius, Neyraudia reynaudiana, Bauhina variegata, Vitis sp.), fire suppression and mowing (Garvue 1988).

Current Research Summary
  Current research summary includes investigating relationships with Mycorrhizae (Fisher 2000). Pollination, propagation and seed storage at Fairchild Tropical Gardens (Garvue 1988).

Current Management Summary
  Management has improved dramatically in the last ten years. Areas that were mowed are no longer, fire has been reintroduced and invasive species have been removed. All of these activities should continue. This species is likely to benefit from increased fire frequency and improve seasonal timing.

Research Management Needs
  Research and management needs include understanding the effects of hydrology, reproductive ecology, habitat requirements throughout the shrub's life stages and protection of remaining populations.

Ex Situ Needs
  A large collection of wild seed is needed to improve genetic diversity of offspring.

References

Books (Single Authors)

Coile, N.C. 2000. Notes on Florida's Regulated Plant Index (Rule 5B-40), Botany Contribution 38. Gainesville, Florida: Florida Dept. of Agriculture and Consumer Services, Division of Plant Industry.

FNAI. 2000. Field Guide to the Rare Plants and Animals of Florida online. Florida Natural Areas Inventory.

Electronic Sources

(2002). Atlas of Florida Vascular Plants. [Web site] University of South Florida Institute for Systematic Botany. http://www.plantatlas.usf.edu/isb/default.htm. Accessed: 2008.

USGS. (2002). Status of Listed Species and Recovery Plan Development. [Web site] USGS: Norther Prairie Wildlife Research Center. http://www.npwrc.usgs.gov/resource/distr/others/recoprog/plant.htm. Accessed: 2002.

Journal Articles

Fisher, J. B.; Jayachandran K. 2002. Arbuscular mycorrhizal fungi enhance seedling growth in two endangered plant species from south Florida. International Journal of Plant Sciences. 163, 4: 559-566.

Fisher, J.B.; Jayachandran, K. 2002. Arbuscular mycorrhizal fungi enhance seedling growth in two endangered plant species from south Florida. International Journal of Plant Sciences. 163, 4: 559-566.

Garvue, D. 1998. Endangered species profile: crenulate lead plant, Amorpha herbacea var. crenulata. Garden News (Fairchild Tropical Garden). 53, 6

Papanastasis, V.P.; Platis, P.D.; Dini-Papanastasi, O. 1997. Productivity of deciduous woody and fodder species in relation to air temperature and precipitation in a Mediterranean environment. Agroforestry Systems. 37: 187-198.

Papanastasis, V.P.; Platis, P.D.; Dini-Papanastasi, O. 1998. Effects of age and frequency of cutting on productivity of Mediterranean deciduous fodder tree and shrub plantations. Forest Ecology and Management. 110: 283-292.

Wilbur, R.L. 1964. A revision of the dwarf species of Amorpha (Leguminosae). The Journal of the Elisha Mitchell Scientific Society. 80, 2: 51-65.

Reports

Avery, G.N.; Loope, L.L. 1980. Endemic taxa in the flora of south Florida. Report T-558. U.S. National Park Service, South Florida Research Center, Everglades National Park: p.Pages 5-6.

DERM. 1996. Endangered plants of Dade County's pine rocklands. Habitat characterization for Amorpha crenulata, Euphorbia deltoidea and Polygala smallii. Dade County Department of Environmental Resources Management. p.18. Technical Report 96-2.

Fisher, J. 2000. Demography of Pine Rockland Endangered Plant Taxa in Miami-Dade County. Tallahassee, Florida: Florida Division of Forestry: Statewide Endangered and Threatened Plant Conservation Program.

Gordon, D. 1992. Element stewardship abstract for pine rockland community. Arlington, Virginia: The Nature Conservancy. Unpublished.

Kernan, C. 1999. Demography of Some South Florida Ecosystem Endangered Plants. Tallahassee, Florida: Florida Division of Forestry: Statewide Endangered and Threatened Plant Conservation Program.

USFWS. 1988. Recovery plan for five pine rockland plant species. Atlanta, Georgia: U.S. Fish and Wildlife Service.


  This profile was updated on 3/4/2010
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