Lalang (Imperata cylindrica) is one of the most common grasses in Singapore and Southeast Asia. It ranks among the world's top most invasive species. Lalang is native to Southeast Asia, Philippines, China, and Japan, but has spread to every continent other than Antarctica.

Where does cogongrass come from?

Native to Southeast Asia, cogongrass was accidentally introduced into the United States as packing material in an orange crate that arrived in Grand Bay, Alabama, in 1912. A few years later, it was intentionally planted as a potential forage crop in Mississippi and as a soil stabilizer in Florida.

Is Lalang dispersed by animals?

The lalang disperses its seeds by wind. It has fine hairs or wing like structures to catch wind enabling it to 'float' further away from the parent parent which prevents overcrowding.

What is botanical name of spear grass?

Spear grass (Heteropogon contortus (L.) Beauv. ex Roem. & Schult.) is a tropical perennial grass.

Is Imperata cylindrica invasive?

Imperata cylindrica, a few key facts

Caution: Highly invasive in areas where I. cylindrica isn't native to.

Seed Dispersal | Reproduction in Plants | Don't Memorise

How does lalang reproduce?

Rhizomes and Seeds

Like many other grasses, lalang can reproduce both asexually and sexually. Asexual reproduction is through an underground stem, known as a rhizome. ... Lalang can also disperse through seeds, which are small and airborne, attached to long white hairs . A single plant can produce up to 3000 seeds .

Do sheep eat spear grass?

Spear-grass Austrostipa nodosa 8.2 7.5 73 Energy and crude protein sufficient for dry sheep/cattle maintenance only.

What is the meaning of spear grass?

1 : any of numerous grasses having spear-shaped inflorescences or stiff pointed leaves: such as. a : couch grass. b : bent sense 2d. c : meadow grass.

How is spear grass propagated?

Propagation and planting

Speargrass is propagated by seed or rhizomes. The seed has no dormancy and seeds may show 95% germination within one week after maturation.

Is shorea a fruit?

Flower blooms usually last for 2 weeks. Fruit consist of nut (13 -21 mm long and 8 – 12 mm wide) with 3 longer wings (13 – 21mm long) and 2 shorter wings (2 – 10 mm long). Lobes on calyx base are present. Timber & Products ( Shorea macroptera is harvested for timber. )

How are Lady Finger seeds dispersed?

the seed of lady finger plant disperse by Explosive Mechanism. The seed inside the ladies finger bursts out from the vegetable when the vegetable becomes excessively ripe and opens up. The seeds which fell on the soil (under proper environmental requirements) start to grow into saplings and then to full-grown plants.

How does dragon fruit disperse its seeds?

draco are orange-reddish globose berries, which can reach up to 13.59 ± 0.85 mm in diameter (Marrero and Pérez, 2012), whose seeds—between 1 and 3 per fruit—are dispersed by frugivorous animals (endozoochory). That fruit size is too large for most bird species to swallow.

Is cogongrass an invasive plant?

Cogongrass is considered one of the worst invasive species in the world, causing both economic and ecological damages that impact forestry, agriculture, rangeland, and natural ecosystems. ... Cogongrass is one of the world's worst invasive weeds, and is firmly established in several southeastern states.

What is the use of Cogon grass?

There are only a few localized benefits of cogon grass. These include use for thatch, forage, erosion control, paper making, and bedding material for livestock. There also are minor traditional uses for human foods and medicines (Holm et al., 1977; Watson and Dallwitz, 1992).

How do you identify cogongrass?

1. Cylindrical in shape.
2. 2-8 inches in length (total flower or seed head)
3. Silvery white in color.
4. Light fluffy dandelion-like seeds.
5. Blooms from late March to mid June (flower timing depends somewhat on local climate)

What is giant star grass?

: a perennial grass (Cynodon plectostachyum) that has stems attaining a height of three to four feet and that is used especially in Africa and India for pasture and hay.

Is Spear Grass bad for dogs?

While spear grass frequently becomes lodged in the paws of dogs, it can also enter their ears, lungs, anus and vulva. Once inside the animal, it can cause harmful infections, and possibly death, if left untreated.

Where is spear grass found?

Areas in between the toes, in the ears, “armpits” and the groin are the most common places to find spear grass. Since the awn can migrate and lodge into the skin/ears foreign body infections could result.

What is wallaby grass?

Redanther or Silvertop Wallaby Grass. Rytidosperma pallidum is an Australian tussock grass within the Poaceae (grass species) family. ... pallidum is an Eastern Australia species which extends through open forests and woodlands in New South Wales, Victoria and the Australian Capital Territory.

How insects help pollinate plants?

When an insect visits the flower to get food, some pollen will stick to its body. The insect then flies off to another flower where some of the pollen may be transferred to the stigma. This transfer of pollen from one flower to another is called cross-pollination. ... Pollen grains are also adapted for insect pollination.

Why is cogongrass bad?

Cogongrass not only replaces native plants, on which wildlife feed, it also has very high silica content, and therefore is unpalatable to native wildlife. The leaves are very stiff and can cut the mouths and damage the teeth of wildlife that attempt to ingest it.

What are bird pollinated plants known as?

Ornithophily or bird pollination is the pollination of flowering plants by birds.

What can I plant with Imperata cylindrica?

Imperata cylindrica is particularly effective planted with other grasses, or shown off in a container. Garden care: Cut down to the ground in February. In cold areas, protect the roots by mulching with straw or well-rotted compost.

Does Imperata spread?

Japanese blood grass (Imperata cylindrica) is a perennial plant. ... In fact, half the states in the United States have banned the sale and planting of the grass because it spreads through its rhizomes and takes over areas of native flora. The green is more aggressive than the cultivated red form.