红花属，一年生草本；叶有刺状利齿；头状花序同性，全为管状花组成，顶生，单生或排成伞房花序式；花冠5裂；总苞片为具刺的苞叶所包围；瘦果光滑，有4棱，冠毛缺或鳞片状。
收缩根的作用是把形成的鳞茎或球茎定位于土壤的某一特定深度，例如番红花属的植物。
Contractile root a specialized root developed by certain bulb-and corm-forming plants that serve to pull the bulb or corm down to the appropriate depth in the soil, e. g. Crocus.
如果红花大过了紫花、白花，便属副品，身份就差得多了。
If red flowers larger than the purple, white, they are substandard goods, as he sent much more.
伯莎注意到那逐渐变长的白天，注意到那些从地面冒出的五彩缤纷的藏红花和那些雪花莲属植物。
Bertha watched the lengthening days, the coloured crocus spring from the ground, the snowdrops.
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