| Family | Orchidaceae |
| Subfamily | Epidendroideae |
| Tribe | Vanilleae |
| Subtribe | Galeolinae |
| Scientific name | Cyrtosia septentrionalis (Reichenbach f.) Garay |
| Synonyms | Galeola septentrionalis Reichenbach f. |
| Common name | (Japanese common name) tsuchi-akebi (ツチアケビ, 土木通 [meaning: ground akebi (akebi = Akebia quinata (Houttuyn) Decaisne)]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) China | |
| Habitat | Mountane forest or bamboo grass fields |
| Chromosomal number | 2n=28 |
| Description | Plants electing 40-90cm tall. Flowers yellow calyx lobes 15-20mm long, 4-6mm wide, flowerting in June to July. Fruits red 6-8cm long. Terrestrial. Mycorrhizae plants. |
| Reference | Cyrtosia septentrionalis (Rchb. f.) Garay |
| Comparative anatomy and systematics of the orchid tribe Vanilleae excluding Vanilla |
| June 2009 at Ohsaka City University Botanical Garden |
June 2009 at Ohsaka City University Botanical Garden |
June 2009 at Ohsaka City University Botanical Garden |
| Fruits | Fruits |
| July 2008 at Ohsaka City University Botanical Garden |
July 2008 at Ohsaka City University Botanical Garden |