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Mentha x piperita, a 30-90cm tall perennial herb
originating in Europe, used to be cultivated but escaped broadly to
grow wild. Four-ridged stems are erect, with rhizomes well branching
and extending sideways. The whole is glabrate and becomes
significantly fragrant if rubbed. Leaves are opposite: oblong, with
short petioles, crepe pattern, pointed tips, and margins with sharp
serrations. Stem tips emerge 5-8cm long and 1.2-8cm wide raceme-like
verticillasters; Flowers are bilabiate, cleft in four, and light
purple. Bloom time: July-September. |
Wild plants in and around Shimane
島根とその周辺の野生植物
