Japanese name: ヒロハコンロンソウ（広葉崑崙草） Scientific name:Cardamine appendiculata
[Overview]
A perennial 30–60 cm tall, found along mountain valley streams and in wetlands.
It has underground stems that extend sideways.
The stem is hairless and bends slightly in a zigzag.
Leaves are alternate and odd-pinnately compound, usually with 5 leaflets, rarely 7.
The leaflets are almost stalkless, ovate to ovate-elliptic, 3–9 cm long and 1–4.5 cm wide; the terminal leaflet is about the same size as the lateral leaflets or slightly larger.
The leaf margins are coarsely toothed, and the margins and the leaf axis bear fine hairs.
The base of the leaf stalk clasps the stem with small ear-like lobes.
A raceme arises at the top of the stem and bears a dozen or so white four-petaled flowers.
The petals are long-ovate, 0.7–0.9 cm long.
The fruit is a linear, hairless silique 2–3 cm long.
The seeds are arranged in a single row in the fruit.
[Notes]
The alternative name derives from Lake Tade-no-ko in Tochigi.
