Japanese name: ヤマガラシ（山芥子） Scientific name:Barbarea orthoceras
[Overview]
A monocarpic perennial found along mountain streams, in moist grasslands from the mountains to the subalpine zone, and on riverbeds in the north.
The stem is erect, branching in the upper part, and ridged.
The basal leaves have leaf stalks, are 6–12 cm long, and are pinnately lobed to completely divided, with 2–4 pairs of lateral leaflets; the terminal leaflet is elliptic to broadly ovate.
The upper stem leaves are alternate, and many of the uppermost are undivided simple leaves; they have no leaf stalks, and the leaf base clasps the stem with ear-like lobes.
The flowers are borne in racemes at the stem tips and are bright yellow with four petals.
The style is shorter than the ovary.
The fruit is 2–5 cm long and slightly square in cross section, with the seeds lined up in a single row inside.
The beak of the fruit is 0.5–1.2 mm long, with length and width equal.
Japan (Hokkaido, Honshu: Chubu and north, Shikoku), Taiwan, Korea, northeastern and northern China, Mongolia, eastern Siberia, Russian Far East, North America
Height
200–600 mm
Leaf shape
Simple leaf (unlobed), Lobed leaf
Leaf arrangement
Alternate, Basal
Inflorescence
Raceme
Flower color
Yellow
Leaf color
Green
Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.
