How are Urena seeds dispersed?

This species reproduces by seed. The hooked spines on its fruit readily attach to animal fur and clothing. Seeds may also be dispersed by water, soil or contaminated agricultural produce.

Is Urena dispersed by wind?

Seeds of plant Y are dispersed by wind, e.g., Dandelion and Hiptage while seeds of plant Z are dispersed by animal, e.g., Xanthium, Urena.

How is the Acacia fruit dispersed?

Acacia comprises both indehiscent and dehiscent species. The pods of the former remain on the tree until browsed or knocked off by browsers or mechan- ical action such as wind. Dehiscent pods open on the tree, exposing seeds to physical forces such as wind or gravity which disperse seeds from their pod.

What are the two methods of fruit dispersal?

Seeds dispersed by water are found in light and buoyant fruits, while those dispersed by wind may have specialized wing-like appendages. Animals can disperse seeds by excreting or burying them; other fruits have structures, such as hooks, that attach themselves to animals’ fur.

What kind of fruit does Urena lobata produce?

U. lobata is a fast-growing plant which has the capacity to rapidly form dense patches and, occasionally, monospecific stands ( Langeland et al., 2008; Florida Exotic Pest Plant Council, 2011 ). This species spreads by seeds and produces fruits with hooked spines which easily attach to animal fur and/or people’s clothing ( Austin, 1999 ).

Where does Franz Xaver Urena get its fibre?

urena Urena (Urena lobata). Franz Xaver Urena has long been used for its fibre in Brazil, but it has been slow in achieving importance as a cultivated fibre crop and is still considered a troublesome weed in some countries. Commercial cultivation of the plant began in the Belgian Congo in the 1920s and in Central Africa in the 1930s.

How many petals does an Urena plant have?

The flowers, growing singly in the axil of the leaf, have five petals that are usually pink. The small seeds have hooklike appendages and are produced in the greatest quantities by uncultivated plants. Urena grows best in hot, humid climates, with direct sunlight and rich, well-drained soil.

What kind of material can Urena be used for?

Urena fibre is fine, soft, and flexible and is readily dyed. Used much like jute, which it resembles in appearance and strength, urena is made into cordage, burlap (hessian), sacking fabrics, and carpeting materials and is often blended with jute or other fibres.