Style filiform, as long as petals.

花柱丝状，与花瓣等长。

Filaments filiform; anthers pale orange.

花丝丝状，花药淡橘黄色；

Leaves all similar, usually submerged, with filiform segments.

全部相似的叶，通常沉水的，具丝状的裂片。

The filiform corrosion phenomenon of coated aluminum was found.

发现涂膜下铝合金发生丝状腐蚀。

Stamens 15 to many, inserted with petals; filaments filiform, free.

雄蕊15到很多，着生的具花瓣；花丝丝状，离生。