CPC National Collection Plant Profile

Ancistrocactus tobuschii

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CPC National Collection Plant Profile

Ancistrocactus tobuschii


Family: 
Cactaceae  
Common Name: 
Tobusch fishhook cactus
Author: 
(W.T. Marsh.) W.T. Marsh. ex Backeberg
Growth Habit: 
Shrub
CPC Number: 
126

Distribution
Protection
Conservation
References


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Ancistrocactus tobuschiienlarge
Image Owner: San Antonio Botanical Garden

Ancistrocactus tobuschiienlarge
Image Owner: San Antonio Botanical Garden


Ancistrocactus tobuschii is Not Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Cindy Barrett contributed to this Plant Profile.

 
Ancistrocactus tobuschii


Tobusch fishhook cactus has attractive yellow flowers which appear in early spring. This beautiful little cactus grows in limestone arroyos in the eastern part of the Edwards Plateau. This is an area that is highly desirable for land development, which is a major threat to the survival of the species. Cacti and succulent collectors have also been cause for the decline in numbers of this plant. The plant is called a "fishhook cactus" due to the hook on the end of one of its spines. (USFWS 1987)

Distribution & Occurrence

State Range
  Texas
State Range of  Ancistrocactus tobuschii
Habitat
  Thin clay soils over limestone; seasonally wet, well drained soils; limestone gravel along higher stream banks. Associated plants include oak, sycamore, and Ashe juniper (USFWS 1987)

Distribution
  Eastern section of Edward's Plateau in Texas (Bandera, Edwards, Kerr, Kimble, Kinney, Real, Uvalde, and Val Verde counties). (Texas Parks and Wildlife 2002)

Number Left
  Greater than 500 individuals in 33 populations at 4 protected sites (3 state parks + one private)

Protection

Global Rank:  
G4T3
 
11/4/2004
Guide to Global Ranks
Federal Status:  
LE
 
10/24/1996
Guide to Federal Status
Recovery Plan:  
Yes
 
3/18/1987

State/Area Protection
  State/Area Rank Status Date  
  Texas S2 E 1/5/1987  

Conservation, Ecology & Research

Ecological Relationships
  There is not a lot of information on the ecological relationships of this plant.

Threats
  Habitat alteration for deer management, livestock trampling, foraging by armadillos, over-collecting, land development.

Current Research Summary
  The San Antonio Botanical Garden has recently experimented with seed collected in situ. Seeds were planted in a mix of sand and Sunshine mix, with many germinating and thriving.

Current Management Summary
  Currently, the San Antonio Botanical Garden has several small cacti, which are being maintained in the greenhouse.

Research Management Needs
  Study ecological relationships
Collect seed from wild populations
Manage an ex situ collection and monitor for insect and disease problems

Ex Situ Needs
  Send seed to the National Seed Storage Lab.

References

Conference Proceedings

Poole, J.; Janssen, G.K. Managing and Monitoring Rare and Endangered Plants on Highway Rights-of-way in Texas. Gen. Tech. Rep. RM-GTR-283. Proceedings of the Southwestern Rare and Endangered Plant Conference; September 11-14; Flagstaff, AZ. In: Maschinski, J.; Hammond, H.D.; Holter, L., editors. 1996. USDA and US Forest Service. p 8-12.

Electronic Sources

(2002). Texas Threatened and Endangered Plants--Profiles. Texas Parks and Wildlife. http://www.tpwd.state.tx.us/nature/endang/plants/index.htm. Accessed: 2002.

ESIS. (1998). Endangered Species System (ESIS): Fish and Wildlife Exchange. [Web site;] Virginia Tech. http://fwie.fw.vt.edu/WWW/esis/. Accessed: 2002.

Journal Articles

Lockwood, M.W. 1995. Notes on life history of Ancistrocactus tobuschii (Cactaceae) in Kinney County, Texas. Southwestern Naturalist. 40, 4: 428-430.

Powell, A.M.; Weedin, J.F. 2001. Chromosome numbers in Chihuahuan Desert Cactaceae. III. Trans-Pecos Texas. American Journal of Botany. 88, 3: 481-485.

Sutton, K.; Baccus, J.T.; Traweek, M.S. 1997. Habitat of Ancistrocactus tobuschii (Tobusch fishhook cactus, cactaceae) on the Edwards Plateau of central Texas. Southwestern Naturalist. 42, 4: 441-445.

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

USFWS. 1979. Determination that Ancistrocactus tobuschii is an Endangered Species. Federal Register. 44, 217: 64736-64738.

USFWS. 1979. Service Lists 32 Plants. Endangered Species Technical Bulletin. 4, 11: 1, 5-8.

Theses

Emmett, Raymond Timothy. 1995. Reproduction, Mortality, And Temporal Changes In Plant Size For The Endemic Tobusch Fishhook Cactus (Ancistrocactus tobuschii). [Ph.D. Thesis]: The University of Texas. Austin. 206p.


  This profile was updated on 9/28/2010
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