Sheath scar with a densely fulvous tomentose ring and persistent culm sheath base.

鞘痕具一枚浓密黄褐色的被绒毛的戒指和宿存的竿箨基部。

Young shoots densely fulvous- to gray-tomentose.

密被的幼枝黄褐色被绒毛到灰色。

The manufacture of fulvous acid by fermentation is under development stage.

利用生物发酵法生产黄腐酸类物质，尚处在开发探讨阶段。