Ranzania (トガクシソウ, Togakushisou) is a monotypic genus of perennial herbs in the family Berberidaceae. The only species is Ranzania japonica. It is native to woodlands in the mountains of Honshu, Japan. This genus is named in honor of Ono Ranzan, who has been called "the Japanese Linnaeus".[1] Fleshy stems of Ranzania form small colonies from an underground rhizome. Each stem bears two trifoliate compound leaves, and between the leaves is a single or more commonly a small cluster of drooping cup-shaped mauve flowers. These develop into an upright cluster of white berries. The haploid chromosome number is n=7.[2]
| Ranzania japonica | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Ranunculales |
| Family: | Berberidaceae |
| Genus: | Ranzania T.Ito |
| Species: | R. japonica
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| Binomial name | |
| Ranzania japonica T.Ito
| |
| Synonyms | |
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Podophyllum japonicum T. Itô ex Maxim. | |
Uses
editIt is occasionally used in shade gardens in the west.[3]
Taxonomy
editThe taxonomy of this plant has changed a fair amount. It was once placed in family Ranzaniaceae Takht. and also combined into genus Podophyllum.
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Close-up of flowers -
Ranzania japonica growing in a shade garden in Sweden
References
edit- ^ Schmid, Wolfram George; Hinkley, Daniel (2002). An Encyclopedia of Shade Perennials. Timber Press. p. 119. ISBN 978-0-88192-549-4.
- ^ The Genus Epimedium and Other Herbaceous Berberidaceae.By William Thomas Stearn, Julian Shaw, Peter Shaw Green, Brian Mathew. Published by Timber Press, 2002 p. 34. ISBN 0-88192-543-8
- ^ Schmid, Wolfram George (2002). An Encyclopedia of Shade Perennials. Timber Press. p. 282. ISBN 978-0-88192-549-4.
External links
edit- "Ranzania japonica". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
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