Spiderwort
It is distributed over East Asia including the whole land of Japan and
the northeastern part of the United States. There are approximately 180
kinds spiderwort genus in the world, and there are five kinds in Japan.
The spiderwort is called "Tuyukusa". It was called Tukikusa
in old days. It may be called "Hotarugusa" and "Boshibana"
from the form of the characteristic flowers.
It does not stand straight at 15-50cm, and the stems crawl on the ground.
It has a blue flower approximately 1,5-2cm over from June to September.
The flower which bloomed in the morning withers away in the afternoon.
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