| Family | Plantaginaceae (also placed in Scrophulariaceae) |
| Tribe | Veroniceae |
| Scientific name | Veronicastrum axillare (Siebold & Zuccarini) T. Yamazaki |
| Synonyms | Botryopleuron axillare (Siebold & Zuccarini) Hemsley; Botryopleuron formosanum Masamune; Calorhabdos axillaris (Siebold & Zuccarini) Bentham ex S. Moore; Calorhabdos simadai Masamune; Paederota axillaris Siebold & Zuccarini |
| Common name | (Japanese common name) torano-o suzukake-sou (トラノオスズカケ, 虎尾鈴掛 [meaning: tiger tail flower hanging bells]) |
| (English common name) none | |
| Distribution | (Japan) Shikoku, Kyushu |
| (Other nations) China, Taiwan | |
| Habitat | Lowland forest |
| Chromosomal number | unknown |
| Description | Plants 70-150cm long. Leaves 6-11cm long, 3-5cm wide. Flowers blue corollas ca. 5mm long, flowering in August to September. Perennial plants. |
| Reference | Veronicastrum axillare (Siebold & Zucc.) T. Yamaz. |
| Veronicastrum axillare (Siebold & Zuccarini) T. Yamazaki | |
| Veronicastrum axillare (Siebold & Zucc.) T. Yamaz. | |
| Chemotaxonomy of Veroniceae and its allies in the Plantaginaceae | |
| Agent for Hair Growth (United States Patent Application 20090104295) | |
| Note | Rare species. |
| August 2009 at Tsukuba Botanical Garden |
August 2009 at Tsukuba Botanical Garden |
August 2009 at Tsukuba Botanical Garden |
| August 2009 at Tsukuba Botanical Garden |