Juncus acutus plant NC8 : 無料・フリー素材/写真
Juncus acutus plant NC8 / 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, yearlong-green perennial, tussock-forming, shortly rhizomatous rush. Stems are 30–160 cm long and 2–4 mm diam. Leaves are terete, basal, shorter than the stems and sharp tipped. Flowerheads are 4–13 cm long; flowers are clustered, with 5–50 clusters per flowerhead. Capsules are much longer than the outer tepals. Flowering is from spring to summer. A serious weed of seasonally to permanently damp areas that should be eradicated before it becomes extensive and uncontrollable. Spiny Rush forms dense hemispherical tussocks. Its leaves and flower stems end in very sharp, hard points that can pierce the skin. It is a serious weed because of its abundant seed production, very pointed tips and large root-ball, which make control difficult. |
| 撮影日 | 2015-08-15 09:40:53 |
| 撮影者 | Macleay Grass Man , Dungog, Australia |
| タグ | |
| 撮影地 | Dungog, New South Wales, Australia 地図 |
| カメラ | Canon PowerShot A650 IS , Canon |
| 露出 | 0.002 sec (1/640) |
| 開放F値 | f/4.0 |
| 焦点距離 | 13745.70455 dpi |