mar菜

mar菜（Amaranthus retroflexus）是A菜科（Amaranthaceae）中的一種開花植物，有幾種通用名稱，包括紅根A菜（Red-root Amaranth），紅根藜草（Redrooted Pigweed），紅根藜草，普通A菜和普通翻滾雜草。
True to its name, it forms a tumbleweed.It is native to the tropical Americas but it is widespread as an introduced species on most continents in a great number of habitats.顧名思義，它形成了風滾草。它原產於熱帶美洲，但在大多數大陸的許多生境中作為引種而廣泛傳播。 This is an erect annual herb reaching a maximum height near 3 meters.這是一種直立的一年生草本植物，最大高度可達15米。 The leaves are nearly 2 centimeters long on large individuals, the ones higher on the stem having a lance shape and those lower on the plant diamond or oval in shape.大個體的葉子長約XNUMX厘米，莖上呈長矛狀的葉片較高，而植物菱形或橢圓形的葉片較低。 The plant is monoecious, with individuals bearing both male and female flowers.該植物雌雄同株，個體具雄花和雌花。 The inflorescence is a large, dense cluster of flowers interspersed with spiny green bracts.花序是一簇大而密集的花，上面散佈著多刺的綠色green片。 The fruit is a capsule less than XNUMX millimeters long with a "lid" which opens to reveal a tiny black seed.果實是小於XNUMX毫米長的帶有“蓋”的膠囊，該蓋打開後露出微小的黑色種子。