Distylium racemosum, the isu tree, is a species of flowering plant in the family Hamamelidaceae.[1] It is native to subtropical eastern Asia; central and southern Japan, the Ryukyu Islands, South Korea (Jeju Island), southeastern China, Taiwan, Hainan, and northern Vietnam.[3] There are a number of cultivars, including 'Guppy' and the variegated 'Akebono'.[4][5]
Distylium racemosum | |
---|---|
Flowers lack petals but have red calyces and maroon stamens.[1] | |
Botanical illustration | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Saxifragales |
Family: | Hamamelidaceae |
Genus: | Distylium |
Species: | D. racemosum
|
Binomial name | |
Distylium racemosum | |
Synonyms[3] | |
Distylium racemosum f. angustifolium (Masam.) H.Ohba |
-
Flowers with leaves
-
At Oyama Shrine
-
A young individual at a shrine in Japan
-
A mature individual
References
edit- ^ a b "Distylium racemosum isu tree". The Royal Horticultural Society. 2022. Retrieved 21 September 2022.
8 suppliers
- ^ Lin, Q.; Botanic Gardens Conservation International (BGCI).; IUCN SSC Global Tree Specialist Group. (2019). "Distylium racemosum". IUCN Red List of Threatened Species. 2019: e.T147377399A147614835. doi:10.2305/IUCN.UK.2019-2.RLTS.T147377399A147614835.en. Retrieved 2 August 2023.
- ^ a b "Distylium racemosum Siebold & Zucc". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 September 2022.
- ^ "Distylium racemosum 'Guppy'". The Royal Horticultural Society. 2022. Retrieved 21 September 2022.
- ^ "Distylium racemosum 'Akebono' (v)". The Royal Horticultural Society. 2022. Retrieved 21 September 2022.