CPC National Collection Plant Profile

Manfreda longiflora

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CPC National Collection Plant Profile

Manfreda longiflora


Family: 
Liliaceae  
Common Names: 
long-flower tube-rose, Runyon huaco
Author: 
Shinners
Growth Habit: 
Subshrub, Forb/herb
CPC Number: 
3563

Distribution
Protection
Conservation
References


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Manfreda longifloraenlarge
Image Owner: San Antonio Botanical Garden

Manfreda longifloraenlarge
Image Owner: San Antonio Botanical Garden


Manfreda longiflora is Fully Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Cindy Barrett contributed to this Plant Profile.

 
Manfreda longiflora


Manfreda or Runyon's huaco is a small fleshy plant that looks a lot like an aloe. Its leaves have interesting purplish-brown markings. Also called Tuberose because of its fragrant white to pink flowers which bloom on a flower stalk that sometimes reaches a height of 30 inches. The Mexican people call any plant used to treat snakebite "huaco". The term "huaco" comes from the huaco bird, which was able to cure itself after a snakebite. There are only 4 known populations. Threats to this species include highway and pipeline construction, maintenance, overgrazing, brush clearing, and non-native grasses. Low population numbers and low numbers of individuals could lead to extinction through any number of chance events. (Damude and Poole 1990).

Distribution & Occurrence

State Range
  Texas
State Range of  Manfreda longiflora
Habitat
  Warm, semi-arid Tamaulipan thornland on terraces, slopes and hills. (Damude and Poole 1990)

Distribution
  Starr and Hidalgo Counties in Texas, as well as Tamaulipas in Mexico.

Number Left
  In 1990 there were only four populations known, containing a total of 60 plants, none of which were seedlings or juveniles. (Damude and Poole 1990)

Protection

Global Rank:  
G2
 
6/9/2003
Guide to Global Ranks
Federal Status:  
SC
 
1/19/1996
Guide to Federal Status
Recovery Plan:  
No
 

State/Area Protection
  State/Area Rank Status Date  
  Texas S2  

Conservation, Ecology & Research

Ecological Relationships
  Possible hummingbird-pollination (Verhoek-Williams 1975)
Possible moth-pollination (Verhoek-Williams 1975)

Threats
  Highway and pipeline construction, maintenance, overgrazing, brush clearing, over-collection, non-native grasses (Damude and Poole 1990)

Current Research Summary
  Chris Best, USFWS, has conducted germination studies at Santa Ana Wildlife Refuge.

Current Management Summary
 

Research Management Needs
  Pollination biology
Response to disturbance
Seed dispersal and seedling recruitment
Monitoring and Surveys

Ex Situ Needs
  Germination studies
Seed collection for National Seed Storage Lab

References

Books (Single Authors)

Correll, D.S.; Johnston, M.C. 1970. Manual of the vascular plants of Texas. Renner: Texas Research Foundation. 1881p.

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

Groman, J.D.; Pellmyr, O. 1999. The pollination biology of Manfreda virginica (Agavaceae): relative contribution of diurnal and nocturnal visitors. Oikos. 87, 2: 373-381.

Rose, J.N. 1922. Runyonia longiflora. Addisonia. 7: 39-40.

Shimmers, L.H. 1966. Texas Polianthes, including manfreda (Agave subgenus manfreda) and runyonia (Agavaceae). Sida. 2, 4: 333-338.

Reports

Damude, N.; Poole, J.M. 1990. Revised status report on Manfreda longiflora (Polianthes runyonii). Alburquerque, NM: U.S. Fish & Wildlife Service.

Theses

Verhoek-Williams, S.E. 1975. A study of the tribe Poliantheae (including manfreda) and revisions of manfreda and prochnyanthes (Agavaceae). [Ph.D. Thesis]: Ithaca, New York. 405p.


  This profile was updated on 9/28/2010
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