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Chasmanthium latifolium, known as fish-on-a-fishing-pole, northern wood-oats, inland sea oats, northern sea oats, and river oats is a species of grass native to the central and eastern United States, Manitoba, and northeastern Mexico; it grows as far north as Pennsylvania and Michigan, [2] where it is a threatened species. [3]
Tridens flavus, known as purpletop, purpletop tridens, tall redtop, greasy grass, and grease grass, [1] [2] [3] is a large, robust perennial bunchgrass. The seeds are purple, giving the grass its common name. The seeds are also oily, leading to its other common name, "grease grass". It reproduces by seed and tillers.
As the grass expands or contracts according to the temperature and moisture conditions, the awns twist or untwist to eventually drill the seeds into the soil – a phenomenon known as geocarpy. The awns containing several seeds may tangle together and the mass is blown away from the parent plant on the wind.
Some ornamental grasses are species that can be grown from seed. Many others are cultivars, and must be propagated by vegetative propagation of an existing plant. Pampas grass (Cortaderia selloana) is easily recognizable, with semi-dwarf to very large selections for the
The seeds are 3–6 mm (1 ⁄ 8 – 1 ⁄ 4 in) long and up to 1.5 mm (1 ⁄ 16 in) wide, and are developed from a single-flowered spikelet. Both glumes are present and well developed. When ripe, the seeds sometimes take on a pink or dull-purple tinge, and turn golden brown with the foliage of the plant in the fall.
Sorghastrum nutans, known as Indiangrass, [2] [3] is a North American prairie grass found in the United States and Canada, especially in the Great Plains and tallgrass prairies. It is sometimes called Indian grass [ 4 ] , yellow Indian-grass , [ 2 ] or wood grass .