Dicksonia sellowiana
| Dicksonia sellowiana | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Pteridophyta |
| Class: | Pteridopsida |
| Order: | Cyatheales |
| Family: | Dicksoniaceae |
| Genus: | Dicksonia |
| Species: | D. sellowiana |
| Binomial name | |
| Dicksonia sellowiana Hook. | |
Dicksonia sellowiana, the xaxim, or samambaiaçu or imperial samambaiaçu, is an arborescent fern in the family Dicksoniaceae.
Distribution
The fern is native to the Atlantic Forest biome in southeastern Brazil, Misiones Province (in the northeast of Argentina) and the east of Paraguay .
In Brazil it is found in the states of Minas Gerais, Rio de Janeiro, São Paulo, Paraná, Santa Catarina and Rio Grande do Sul.
Description
Dicksonia sellowiana has an erect and cilindric caudex, reaching sometimes more than 10 metres (33 ft) high, the fronds are bipinnate and 2 m (6 ft 7 in) long. Due to illegal extraction, the species is at risk of extinction.
Dicksonia sellowiana is variable in its form. Variations are sometimes treated as separate varieties, which include:[1]
- Dicksonia sellowiana var. ghiesbreghtii
- Dicksonia sellowiana var. gigantea
- Dicksonia sellowiana var. karsteniana
- Dicksonia sellowiana var. lobulata
References
This article is issued from Wikipedia - version of the 11/3/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.