Biology:Encephalartos arenarius
| Encephalartos arenarius | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Zamiaceae |
| Genus: | Encephalartos |
| Species: | E. arenarius
|
| Binomial name | |
| Encephalartos arenarius R.A. Dyer
| |
Encephalartos arenarius is a species of cycad in the family Zamiaceae. It is endemic to South Africa , where it is limited to the Eastern Cape. Its common names include Alexandria cycad and dune cycad.[1]
Description
This plant has an egg-shaped stem partially buried in the ground, measuring 20-30 cm in diameter and reaching a height of one meter from the base. Its lanceolate leaves are 100 to 150 cm long, leathery, and arranged alternately along the stem. The base of the leaf stalk is smooth on one side and hairy on the other.
The plant is dioecious, with elongated male cones measuring 30–50 cm long and 8–15 cm in diameter, and cylindrical female cones measuring 35–60 cm long and 20–30 cm in diameter. The seeds are approximately spherical, with red sarcotesta, and 20-25 mm wide.[3]
Leaves and spines
Leaves
Cone
Distribution
This species lives in densely wooded dune habitat and scrub. It is an endangered species with a maximum global population estimated at around 1500 mature individuals. Most subpopulations occur near the town of Alexandria, Eastern Cape. The main threat to the species is overcollection.[1]
References
- ↑ 1.0 1.1 1.2 Donaldson, J.S. 2010. Encephalartos arenarius. The IUCN Red List of Threatened Species. Version 2015.2. Downloaded on 06 September 2015.
- ↑ "Appendices | CITES". https://cites.org/eng/app/appendices.php.
- ↑ "Encephalartos arenarius". https://pza.sanbi.org/encephalartos-arenarius.
External links
- Encephalartos arenarius. Tropicos.
Wikidata ☰ Q518035 entry
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