Japanese name: コアカソ（小赤麻） Scientific name:Boehmeria spicata var. spicata
[Overview]
A subshrub 1–2 m tall, found in hills and fields.
The base of the stem becomes woody and branches often.
The stems and leaf stalks are often tinged red.
The leaves are simple and opposite, rhombic-ovate, 4–8 cm long, with a tail-like pointed tip; the margins have 10–20 pairs of coarse serrations.
There are male flowers and female flowers.
The male inflorescences arise from the leaf axils on the lower part of the stem and extend as spikes.
The female inflorescences arise from the leaf axils on the upper part of the stem, with spherical clusters of flowers forming spikes.
There are individuals that reproduce sexually and individuals that reproduce asexually.
The fruit is an achene with fine hairs over the entire surface.
