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The grass is medium to light green in color and has a coarse texture with short upright seedhead stems that grow to about 3-5 inches. Native to Southern China, it was introduced to the United States in 1916 [1] and has since become one of the common grasses in the Southeastern United States and Hawaii. It can also be considered a weed. [2]
Cenchrus clandestinus is a rhizomatous grass with matted roots and a grass-like or herbaceous habit. The leaves are green, flattened or upwardly folded along the midrib, 10–150 mm (0.39–5.91 in) long, and 1–5 mm (0.039–0.197 in) wide.
Cenchrus ciliaris (buffel-grass [2] or African foxtail grass; syn. Pennisetum ciliare (L.) Link) is a species of grass native to most of Africa, southern Asia (east to India), southern Iran, and the extreme south of Europe . [3] Other names by which this grass is known include dhaman grass, anjan grass and koluk katai. [4] [5]
It is an invasive species in California, where it is an invasive weed of chaparral and coastal sage scrub habitat along the southern and central coastal regions. [4] It was first introduced to Davis in the Sacramento Valley as a drought-tolerant range grass for grazing. [5] [6] It is also known as an invasive species and weed in parts of Australia.
Most are native to Europe, Asia, and North Africa, but Prunella vulgaris (common self-heal) is Holarctic in distribution, occurring in North America as well, and is a common lawn weed. Prunellas are low-growing plants, and thrive in moist wasteland and grass, spreading rapidly to cover the ground.
The differences in broadleaf weeds' structure and growth habits make them easy to distinguish from narrow-leaved weedy grasses. [5] Most broadleaf weeds have leaves with net-like veins and nodes that contain one or more leaves, and they may have showy flowers, [6] while grassy weeds appear as a single leaf from a germinated seed. [7]
Para grass is a vigorous, semi-prostrate perennial grass with creeping stolons which can grow up to 5 metres (16 ft) long. The stems have hairy nodes and leaf sheaths and the leaf blades are up to 2 centimetres (0.8 in) wide and 30 centimetres (12 in) long.
Sida acuta, the common wireweed, [3] is a species of flowering plant in the mallow family, Malvaceae.It is believed to have originated in Central America, but today has a pantropical distribution and is considered a weed in some areas.