Mondo Grass in flower

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Ophiopogon japonicus (Mondo grass, Fountain plant, monkey grass; Japanese: リュウノヒゲ ryu-no-hige ("dragon's beard") or ジャノヒゲ ja-no-hige ("snake's beard")

In traditional Chinese medicine Ophiopogon japonicus tuber, known as mai men dong (Chinese: 麥門冬), is the cardinal herb for yin deficiency. According to the Chinese Herbal Medicine Materia Medica, the herb is sweet, slightly bitter and slightly cold, enters the heart, lung and stomach channels and nourishes the yin of the stomach, spleen, heart and lungs and clears heat and quiets irritability.