Japanese name: ミチノクエンゴサク（陸奥延胡索） Scientific name:Corydalis orthoceras
[Overview]
A perennial 10–15 cm tall, growing in deciduous forests on the Sea of Japan side.
It has a round tuber underground.
A single flower stem emerges from the tuber.
One of the leaves on the flower stem is a scale leaf.
Axillary buds form on the scale leaf and grow into small corms.
The leaves are usually 2–3 times ternately compound, and the leaflets are linear to narrowly elliptic, but their shapes are highly variable.
A raceme at the stem tip bears several flowers.
A raceme at the stem tip bears several flowers.
The flowers are 0.7–1.5 cm long and pale bluish purple to bluish purple.
There are 4 petals, but the upper one is longer than the others and has a long spur.
The bract at the base of each pedicel is usually incised, but some are entire.
The fruit is a lanceolate to narrowly ovate capsule.
The seeds have an appendage (elaiosome) that ants like, and they are carried and dispersed by ants.
