Cenchrus ciliaris plant4 NWP : 無料・フリー素材/写真
Cenchrus ciliaris plant4 NWP / Macleay Grass Man
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Introduced warm-season perennial tufted to shortly rhizomatous C4 grass; stems are branching, ascending to erect and to 100 cm tall. Leaves are 2-13 mm wide, 3-30 cm long and green to blue-green. Flowerheads are cylindrical spike-like contracted panicles up to 15 cm long and usually purplish when young. Spikelets are surrounded by bristles that form a soft burr and which fall with the spikelets at maturity. Burrs are 12 mm long, with one bristle longer than the others and bristles are antrorsely barbed; inner bristles are hairy in the lower part and fused only at the base forming a short disc. Flowers from late spring to autumn. A native of the northern hemisphere, it is sometimes sown as a pasture and is commonly a weed of sandy areas; also occurs on sandy loams to clay loams. Most common on the Plains and western edges of the Slopes. Seeds are difficult to sow and but it is very persistent summer-growing species which is not suited to short-term pastures as it is difficult to remove. Prefers well-drained soils and does not tolerate prolonged flooding or waterlogging. Very drought tolerant and responds quickly to rain, but requires fertile soils for production and is frost sensitive. Moderately palatable, but causes big head in horses. May out compete native pastures and is a weed of roadsides. |
| 撮影日 | 2016-05-16 13:45:41 |
| 撮影者 | Macleay Grass Man , Dungog, Australia |
| タグ | |
| 撮影地 | Riverside, New South Wales, Australia 地図 |
| カメラ | Canon PowerShot A650 IS , Canon |
| 露出 | 0.017 sec (1/60) |
| 開放F値 | f/8.0 |
| 焦点距離 | 13745.70455 dpi |