This plant is a climbing shrub and grows 1 to 2 m in height. The dark purple flowers bloom at its axils.
It is named in honor of Swedish botanist, Carl Peter Thunberg, who is also one of the three scholars of Dejima
including Siebold and has built the foundation of the Japanese botany.
The climbing plants, such as Thunbergia alata and
Thunbergia gregorii, are well known as the
but this plant is an upright habitual shrub and has the specific epithet, erecta.
Yahazu in Japanese means a nock of an arrow, and compare the two bracts
which sandwich a flower to the yahazu, this plant was named as Kodachi (meaning upright habit)
Yahazu kazura (meaning a creeping plant) in Japanese.
This plant has glossy leaves and trumpet-shaped flowers like a Morning glory.
Its base is a deep shade of yellow, its cylindrical part is white, and the contrast of tricolor is beautiful,
so this plant has the English name, King's mantle.
Located in the Sun Gallery are a white-flowered cultivar, Thunbergia erecta 'Alba'
and a relative, Thunbergia vogeliana which has a little larger flowers
and different-shaped leaves.
The three scholars of Dejima were the ones who came to Dejima in Nagasaki during the Edo period
and conducted a study of natural history.
| Classification || Acanthaceae Thunbergia |
| Scientific name || Thunbergia erecta |
| Japanese name || Kodachi-yahazukazura |
| English name || King's mantle |
| Native locality || Tropical western Africa |
Ecological description || Evergreen shrub|
| RDB || --- |
| Planting place || Sun Gallery |