CPC National Collection Plant Profile

Digitaria pauciflora

Photographer:
Jennifer Possley

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CPC National Collection Plant Profile

Digitaria pauciflora


Family: 
Poaceae  
Common Names: 
Everglades grass, few flowered crabgrass, few flowered fingergrass, finger grass, Florida pineland crabgrass, particular grass, two spike crabgrass
Author: 
A.S. Hitchc.
Growth Habit: 
Graminoid
CPC Number: 
1418

Distribution
Protection
Conservation
References


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Digitaria paucifloraenlarge
Photographer: Jennifer Possley
jpossley[at]fairchildgarden.org
Image Owner: Fairchild Tropical Garden


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

 
Digitaria pauciflora


Digitaria pauciflora is a blue-green to gray bunch grass that forms mounds of up to one meter (three feet) in diameter. Much of what is known regarding Digitaria pauciflora is taxonomic in nature (e.g. Hitchcock 1935; Webster and Hatch 1990; Wunderlin 1998). It is generally agreed upon that this species is currently known only from the Everglades pinelands (with the exception of a single occurrence which has since disappeared in the Richmond Pineland Complex (Bradley and Gann 1999; R. Hammer pers. comm.) Digitaria pauciflora appears to be fire tolerant, existing in ecosystems that are known to have frequent fires (Avery 1983; Bradley and Gann 1999).

Distribution & Occurrence

State Range
  Florida
State Range of  Digitaria pauciflora
Habitat
  This species is known from rocky pinelands (Hitchcock 1935; Wunderlin 1988) or more specifically the fingerglades or ecotone between pine rockland and marl prairie, and edges of each ecosystem. These habitats can flood, especially the marl prairie, each wet season (Bradley and Gann 1999; Avery 1983).

Associated species include: Pinus elliottii var. densa, Sabal palmetto, Schizachyrium rhizomatum, Vernonia blodgettii and Elytraria caroliniensis var. angustifolia.

Distribution
  This species is endemic to the Everglades region of central and southern Miami-Dade County along the Miami Rock Ridge, from South Miami to Long Pine Key, ranging approx. 42 miles (Avery 1983; Bradley and Gann 1999; R. Hammer, G. Gann and T. Armentano pers. comm.) Current: only at Long Pine Key, approx 31 sq. miles (Bradley and Gann 1999).

Number Left
  Two hundred individuals remain at one site in Everglades National Park, Dade County, FL.

Protection

Global Rank:  
G1
 
6/2/2006
Guide to Global Ranks
Federal Status:  
C
 
1/19/1996
Guide to Federal Status
Recovery Plan:  
No
 

State/Area Protection
  State/Area Rank Status Date  
  Florida S1 N 5/6/1991  

Conservation, Ecology & Research

Ecological Relationships
  Unknown.

Threats
  Threats include naturally occurring stochastic events, changes in
hydrology, exotic plant invasion (Schinus terebinthifolius, Neyraudia reynaudiana) and alterations in fire patterns (Bradley and Gann 1999).

Current Research Summary
 

Current Management Summary
  Prescribed fires are part of a current management regime.

Research Management Needs
  Current research and management needs include understanding shifts in hydrology and alteration of fire patterns. Population monitoring and well as understanding reproductive biology and seedling recruitment requirements will aid in conservation efforts.

Ex Situ Needs
  Digitaria pauciflora is not currently in Fairchild Tropical Garden's ex situ collection.

References

Books (Single Authors)

Hitchcock, A.S.; Chase, A. 1950. Manual of the grasses of the United States. New York: Dover Publications.

Wunderlin, R.P. 1998. Guide to the vascular plants of Florida. Gainesville, Florida: University Press of Florida. 806p.

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.

Journal Articles

Avery, G.N. 1983. Digitaria pauciflora A very particular grass. Fairchild Trop. Gard. Bull. July: 30-31.

Hammer, R. 2000. Digitaria pauciflora - A very special grass. Newsletter of the Dade Chapter Florida Native Plant Society.

USFWS. 1976. Proposed Endangered Status for 1700 U.S. Plants. Federal Register. 41: 24523-24572.

Webster, R.D.; Hatch, S.L. 1990. Taxonomy of Digitaria section Aequiglumae (Poaceae: Paniceae). SIDA. 14, 2: 145-167.

Reports

Bradley, K.; Gann, G. 1999. IRC (Institute for Regional Conservation). Vero Beach, Florida: Report submitted to the U.S. Fish and Wildlife Service.


  This profile was updated on 3/4/2010
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