Leaves long linear, graminoid or shortly setiform, apex spinose.

叶子长线，状或短刚毛状的，具刺的先端。

Root pressure tends to build up at night, when the rate of transpiration is low, and is a cause of GUTTATION in some species , especially grasses.

根压也是一些植物尤其是类“吐水”象的原因之一。

An example is Puccinia graminis, the stem rust of cereals and grasses, which overwinters on the barberry.

例如生活上，引起麦类秆锈病的柄锈菌，必须蘗属植物上越冬。

Leaves in a rosette, grasslike, linear, occasionally thinly filiform, often thin and transparent, fenestrate, base sheathing.

叶莲座丛生，状，线，偶尔薄丝状，通常薄而透明，，基部具鞘。