Notes For Reference:-

Species, Varieties, or Forms in the Genus Fatoua:

Fatoua villosa / Kuwakusa

Fatoua villosa / Kuwakusa クワクサ

Fatoua villosa: An annual herb 30-60cm tall that grows on roadsides, fields, or wastelands, with stems and leaves with fine hairs. Stems occasionally turn dark purple, and leaves are alternate, 3-8cm long and 2-5cm wide, with an ovate shape, pointed tips, and obtuse serrations on their margins. Male flowers and female ones set themselves mingling together at the axils. Fruit (achene) envelops itself with perianths, and the lower half expands and becomes liquid; thus, acquired turgor pressure causes the seeds to detach. Bloom time: September-October.