Common name: Knotgrass
Scientific name: Polygonum aviculare 萹蓄, 竹葉草, 大螞蟻草, 扁竹, 𦺇
Genus: Polygonum 蓼屬
Family: Polygonaceae 蓼科, knotweed or smartweed-buckwheat family
Remarks*:
Origin: native
Date: 3rd July
19 Leaves on main stem are two or three times longer than those on branches
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