That hull is made from glumes -- tough chaff that protects the grains.

那层壳是由成的——这是一种坚韧的壳，来保护谷粒。

Parting the grasses and looking more closely you may trace the branching of their shining stems, and note the marvelous beauty of their mist of flowers, the glumes and pales exquisitely penciled, the yellow dangling stamens, and feathery pistils.

分开草，仔细观，您可能会追踪到它们闪亮的茎的分枝，并注意到它们的花雾的奇妙，铅笔精心绘制的和苍白，黄色悬垂的雄蕊和羽毛状的雌蕊。