千穗谷，又名＂籽粒苋＂，籽粒芡，＂谷粒苋＂，＂苋米＂（学名：Amaranthus hypochondriacus）为苋科苋属的植物。

一年生草本，茎高大，无毛。卵形叶子有长柄。夏秋开花，穗状花序，再集成直立稠密的圆锥花序。紫色或绿色。苞片有长芒。近棱状卵形的胞果，环状横裂，外包刺毛状苞和花被片。

Amaranthus hypochondriacus is an ornamental plant commonly known as Prince-of-Wales feather or prince's-feather. Originally endemic to Mexico, it is called quelite, blero and quintonil in Spanish.

In Africa, like many other species in the family Amaranthaceae, it is valued as source of food.