Digitaria sanguinalis plant NC2 : 無料・フリー素材/写真
Digitaria sanguinalis plant NC2 / 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 variable C4 grass to 70 cm tall, with weak sprawling stems that root at the nodes. Leaves are hairy towards their base and leaf sheaths are hairy; nodes usually less so. Ligules are membranous and 1-2 mm long. Flowerheads are mostly digitate to subdigitate with 4-13 branches (3-30 cm long, initially erect, spreading later). Spikelets are rather densely arranged, paired, 1 pedicel very short, the other about as long as the spikelet. A native of temperate regions, it is found in disturbed areas on well-drained soils, where there is low ground cover (e.g. heavily grazed or cultivated paddocks). A weed of summer crops and pastures. Only productive under good moisture and fertility; quickly dies off with frost or dry conditions, leaving bare patches in the pasture. Thrives under grazing systems that encourage bare ground. |
| 撮影日 | 2006-10-29 23:49:07 |
| 撮影者 | Macleay Grass Man , Dungog, Australia |
| タグ | |
| 撮影地 | Arakoon, New South Wales, Australia 地図 |
| カメラ | COOLPIX P2 , NIKON |
| 露出 | 0.045 sec (1/22) |
| 開放F値 | f/3.5 |
| 焦点距離 | 8 mm |