Encephalartos concinnus
| Encephalartos concinnus | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| (unranked): | Gymnosperms |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Zamiaceae |
| Genus: | Encephalartos |
| Species: | E. concinnus
|
| Binomial name | |
| Encephalartos concinnus R.A. Dyer & Verdoorn 1969
| |
Encephalartos concinnus is a species of cycad in the family Zamiaceae. It is endemic to Zimbabwe. It is known as the Runde cycad.[1]
Description[]
It is an arborescent plant, with erect or decumbent stem, without branches, up to 2.5–3 m tall and with a diameter of 35–45 cm, covered with tomentose cataphylls.
The pinnate leaves, arranged in a crown at the apex of the stem, are 150–200 cm long, composed of about 50 pairs of lanceolate leaflets, with margins endowed with small spines and arranged on the rachis at an angle of 45-80°.
It is a dioecious species, endowed with 1-4 fusiform male cones, sessile, green in color, 30–50 cm long and with a diameter of 7–10 cm, with broad and rhombic-shaped microsporophylls, and 1-2 female cones, ovoid, always green, but 35–45 cm long and with a diameter of 15–20 cm, with macrosporophylls with a warty surface.
The seeds have an oblong shape, are 30–35 mm long, have a width of 8–23 mm and are covered with a brown sarcotesta.[2]
Range[]
This species grows in steep, rocky, misty valleys and woodlands. There are three known subpopulations, though one may have been extirpated. The plant is threatened by overcollection.[1]
There are 3 subpopulations found in:[1]
References[]
- ^ a b c d Donaldson, J.S. (2010). "Encephalartos concinnus". IUCN Red List of Threatened Species. 2010: e.T41903A10586667. doi:10.2305/IUCN.UK.2010-3.RLTS.T41903A10586667.en. Retrieved 20 November 2021.
- ^ "Encephalartos concinnus". PlantNET Home Page - National Herbarium of New South Wales. Retrieved 2019-09-17.
External links[]
- Encephalartos concinnus. Tropicos.
Media related to Encephalartos concinnus at Wikimedia Commons
Data related to Encephalartos concinnus at Wikispecies
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- IUCN Red List endangered species
- Encephalartos
- Plants described in 1969
- Endemic flora of Zimbabwe
- Cycad stubs