Vernacular
  • Carrot weed,
  • Small matweed,
  • Woolly cottonflower
Details
Eppo_code

GUMDE

Family

Amaranthaceae

Species

Guilleminea densa (Humb. & Bonpl. ex Schult.) Moq.

Meaning_of_the_name
Global_description

G. densa is a herb, grows up to 4 cm height. Leaves are small, simple, alternate and rosette arranged. Blade is entire, smooth and globrous. Branches are postrate, covered with short hairs. Flowers are clustered on the axis of the stem, cream white.Stem is a short rhizome. Roots are taproot system.

Similar_species
Cotyledons
First_leaves
Habit

G. densa is an perennial herb. Grows up to 4 cm. branches are postrate.

Underground_system

Deep taproots system.

Stem

Stem is short, full and whitish.

Leaves

Leaves are simple, alternate and rosette arranged. Blade is narrow elliptic to broad ovate shape, apex is acute apes shape and acute base shape, entire leaf margin. Petioles have wings. Glabrous upper surface and long white hair on the lower surface of the leave.4Smooth, shiny green leave, withought an aroma.

Inflorescence

Infloresenscence are terminal, axillary and clustered. The flowers are whorls arranged.

Flowers

Flowers are woolly, compact, open from the centre of the inflorescence. The flower is creamy-white to brown.

Fruits

The fruits are utricle hairless, creamy-white, smooth and indehiscent.

Seeds

Seeds are small, compressed, ovoid and shiny brown.

Biology

G. densa multiplies by seeds. It is dispersed by water and human movement.

Ecology

It occurs in disturbed area, and roadside.

Origine

Native to Central America.

World_distribution
South_african_distribution

Distributed to the eastern part of South Africa.

Knp_distribution

Distributed to the entire part of KNP.

Use
Global_weediness
South_african_weediness

It is a problem in golf course and to sport turf.

Knp_weediness

Invasive weed with low impact on the ecology, difficult to control. it is a problem in the parking lot.

Global_control
Control_knp

It is controlled by deep cultivation. Use herbicides control method, repeat the applicaction of ehrbicides.

References

(Problem plants of South Africa) Bromilow, C. (2001), Published by Briza Plublications CC
(A revised list of alien plants for the Kruger National Park.Koedoe) Foxcroft, L.C., Henderson, L., Nichols, G.R., Martin, B.W.

Web_links

http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=122510

Vernacular Country Language Source
Woolly cottonflower English Foxcroft, 2003
Carrot weed English R.P.Randall, 2002
Small matweed English ITIS
Map