- Flower nameCollinsonia japonica
- Scientific nameCollinsonia japonica
- Alias霜柱, Collinsonia japonica
- Place of originJapan
- Place of floweringLow mountains
- Flowering seasonSeptember, October
What is Collinsonia japonica
Collinsonia japonica or shimobashira (scientific name: Collinsonia japonica) is an endemic species of Japan and is a perennial perennial plant in the family Lamiaceae. It grows naturally in low mountain forests from the south of Kanto to Kyushu. In the autumn, the inflorescence is extended and a large number of white bell-shaped florets are released. Stamens protrude from the corolla. It is known for the formation of frost pillars on stems that withered in winter.
Generic name: Shimobashira (frost column), Scientific name: Collinsonia japonica, Synonym: Keiskea japonica, Origin: Japan, Plant height: 40-70 cm, leaf Introductory: opposite, leaf length: 8-20 cm, leaf shape: oval, leaf margin: sawtooth, flowering period: September-October, inflorescence form: raceme, corolla shape: bell-shaped, flower color: white, flower diameter : 0.6-0.7 cm, stamen: stick out from the corolla.