Notes For Reference:-　

Species, Varieties, or Forms in the Genus Keiskea:

Keiskea japonica / Shimobashira

Keiskea japonica / Shimobashira シモバシラ

Keiskea japonica is a perennial plant found in the shade of trees in mountainous regions. The stems have four ridges, grow to 40-90cm in height, and branch on the upper portions. Leaves, with 5-30mm-long, 3-5.5cm-wide petioles, are in the shape of a long-oblong, and there exist fine hairs on the veins on the surfaces; the leaf margins have serration. Spikes, 5-12cm long, emerge from leaf axils and bloom with labiate flowers facing one side. The corollas, white, are approximately 7mm in size. Bloom time: September-October.