Cat's-claw vine

Macfadyena unguis-cati-- Center for Aquatic and Invasive Plants

Macfadyena unguis-cati (syn. Dolichandra unguis-cati)

Non-Native to Florida
Origin: Tropical America1
Introduction to Florida: pre-19472

Video ID segment (2-3 minutes)
Adobe Flash needed to view video

Online image request form

cat's-claw vine cat's-claw vine cat's-claw vine cat's-claw vine cat's-claw vine cat's-claw vine cat's-claw vine

This species appears on the following legally prohibited plant lists

CATEGORY I on the Florida Exotic Pest Plant Council's (FLEPPC) 2013 List of Invasive Plant Species

The UF/IFAS Assessment lists plants according to their invasive status in Florida.

USDA-APHIS Weed Risk Assessment for Dolichandra unguis-cati (L.) L. G. Lohmann (Bignoniaceae) – Cat’s-claw (2013) (PDF)




Download a page (PDF) from Identification and Biology of Nonnative Plants in Florida’s Natural Areas – Second Edition3

Download a recognition card (PDF) from Invasive and Non-native Plants You Should Know 3

Introduction

Macfadyena unguis-cati, or Cats claw vine, is a native from West Indies and Mexico to Argentina. In Florida populations have been documented in several counties, including Escambia, Alachua, Seminole, Brevard, Hillsborough, Hernando, and Dade counties. Cats claw vine gets its name from the 3-pronged claw-like climbing appendages that are used to grasp onto plants or surfaces. Cats claw vine is considered a Category I exotic invasive by Florida’s Exotic Pest Plant Council.

back to top

 

Description

Cats claw vine is a high-climbing woody vine that can grow up to 50 feet in length, often rooting at the node. The dark green leaves are opposite, compound, with small, wide leaflets that mature into ovate or lanceolate shaped leaves. Stems are vine-like and covered with lenticels. Tendrils are forked, with the tip being claw like. The flowers are trumpet shaped, yellow in color, 3 inches long and 4 inches across. These are solitary or in axillary clusters. Fruit capsules are linear and flat, roughly 20 inches long containing oblong, winged seeds that are wind-dispersed. Tubers are produced by both young and mature plants and allow for regrowth. This species is very similar in appearance to the native cross-vine (Bignonia capreolata), but the cross-vine possesses red-orange flowers.

back to top

 

Impacts

Cats claw vine is a long lived plant that grows relatively slow. As the plant matures, typically in its second year, root tubers and stolons form. Tubers and stolons can also form at each node if the vine is creeping along the soil surface. Pursuant to its rooting abilities, a dense mat will cover the forest floor and smother native vegetation. Areas that are susceptible to invasion to cats claw include river or stream banks, near human habitations, and undisturbed hammocks.

back to top

 

Management

Preventative

The first step in preventative control of cats claw vine is to limit planting and removal of existing plants within the landscape. If possible, removal should occur before seeds are produced. Care must be exercised to prevent seed spread and dispersal during the removal process.

Cultural

Inform the public to refrain from purchasing, propagating, or planting cats claw vine due to its ability to escape into natural areas.

Mechanical

Continuous cutting or mowing will provide eventual control, but this process could take several months or years to deplete the reserves of larger plants. During this process it is essential to prevent seed formation.

Biological

There are no known biological control agents for cats claw vine.

Chemical

Current chemical controls include cutting the vines and painting the cut ends with glyphosate (100% solution) herbicide. Triclopyr may provide good control as well (100% solution as a basal bark treatment) or 1-2% foliar spray with surfactant.

back to top

 

References and Useful Links

Floridata Homepage

University of Florida Center for Aquatic and Invasive Plants

Langeland, K.A. and K. Craddock Burks. 1998. Identification and Biology of Non-Native Plants in Florida's Natural Areas. IFAS Publication SP 257. University of Florida, Gainesville. 165 pp.

University of Florida’s Cooperative Extension Electronic Data Information Source

The Plant Conservation Alliance's Alien Plant Working Group. Weeds Gone Wild: Alien Plant Invaders of Natural Areas

Pacific Island Ecosystems at Risk (PIER). Plant Threats to Pacific Ecosystems

Invasive Plants of the Eastern United States

USDA Natural Resources Conservation Service. Plants Database

Ward, D.B. 2005. Putting a stop to the cat-claw vine infestation in Gainesville. Wildland Weeds 8(3):17.

Excerpted from
University of Florida, IFAS Extension, Circular 1529, Invasive Species Management Plans for Florida, 2008 by
Greg MacDonald, Associate Professor Jay Ferrell, Assistant Professor and Extension Weed Specialist
Brent Sellers, Assistant Professor and Extension Weed Specialist
Ken Langeland, Professor and Extension Weed Specialist Agronomy Department, Gainesville and Range Cattle REC, Ona
Tina Duperron-Bond, DPM – Osceola County
Eileen Ketterer-Guest, former Graduate Research Assistant
Description modified January 2014 using Citation #1 below

back to top

 


 

More Resources

View more information and pictures about cat's-claw vine as contained in the Langeland/Burks book, Identification & Biology of Non-Native Plants in Florida's Natural Areas.

View the herbarium specimen image from the University of Florida Herbarium Digital Imaging Projects.

back to top

 

Citations

1. Identification and Biology of Nonnative Plants in Florida’s Natural Areas – Second Edition, by K.A. Langeland, H.M. Cherry, et al. University of Florida-IFAS Publication # SP 257. 2008.

2. Strangers in Paradise, Impact and Management of Nonindigenous Species in Florida, Chapter 2: Florida’s Invasion by Nonindigenous Plants: History, Screening, and Regulation, by D.R. Gordon and K.P. Thomas, pp. 21-37. Island Press, Washington, DC, 1997.

3. Invasive and Non-native Plants You Should Know - Recognition Cards, by A. Richard and V. Ramey. University of Florida-IFAS Publication # SP 431. 2007.

back to top