Japanese name: ウバタケギボウシ（姥岳擬宝珠） Scientific name:Hosta pulchella
[Overview]
A perennial growing on rocky ground, reaching about 13–40 cm in height.
It has a somewhat creeping rhizome.
The leaves form a rosette and are erect or spreading; they are ovate, 3–13 cm long and 1–8 cm wide, glossy, with a heart-shaped base.
The veins on the underside of the leaf are smooth.
The petiole is slender and longer than the leaf.
The leaf base does not run down along the petiole.
The flower stalk rises obliquely and is tinged with purple.
The flowers are borne in a raceme, with a bract at the base.
The bract is lanceolate and boat-shaped, 13–30 mm long, and remains green and firm even at flowering.
The corolla is pale purple, with 6 tepals 40–50 mm long. Dark purple veins on the inside of the tepals stand out against the lighter ground color.
Each flower opens in the morning and wilts in the evening, lasting one day. The anthers are tinged with purple, and the plant sets fruit.
[Notes]
The Japanese name comes from Ubadake, another name for Mt. Sobo.
