Hypericum senanense subsp. senanense ("Shinanotogiri")

Japanese name: シナノオトギリ （信濃弟切）
Scientific name: Hypericum senanense subsp. senanense

[Overview]
A perennial 10–30 cm tall, found in subalpine grasslands, gravelly areas and similar places.
It spreads by underground stems and forms colonies.
The stem lies down at the base, and the upper part is erect.
Leaves are simple and opposite, elliptic to lanceolate, 1.5–4 cm long and 0.7–2.6 cm wide, with clear dots and black dots along the leaf margin.
Cymes at the branch tips bear 1–17 flowers.
The flowers are yellow with 5 petals, 2–3 cm across, with many yellow stamens.
The petal edges sometimes have black dots.
The fruit is a capsule.

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