Encephalartos longifolius

Thunberg's cycad
Female specimens in the Suurberg
CITES Appendix I (CITES)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Zamiaceae
Genus: Encephalartos
Species:
E. longifolius
Binomial name
Encephalartos longifolius
(Jacq.) Lehm., 1834
  range of species
Synonyms

Encephalartos lanuginosus Jacqin
Encephalartos mauritianus Miq.
Zamia lanuginosa Jacqin
Zamia longifolia Jacqin

Encephalartos longifolius is a low-growing palm-like cycad in the family Zamiaceae. It is endemic to South Africa and is commonly known as Thunberg's cycad, breadpalm or broodboom.[2] This cycad is listed as near threatened in the IUCN Red List of Threatened Species.[3]

Description

E. longifolius growing at the Orto botanico di Palermo
The male cone

The breadpalm grows up to three metres tall and develops a very thick trunk with age. This is crowned with dark or metallic green, semi-glossy, arching leaves up to two metres long and moderately keeled. The leaflets are lanceolate, overlapping upwards and have smooth margins. There are one to three green, ovoid male cones up to sixty centimetres long and twenty centimetres in diameter. A similar number of green female cones are more robust with a diameter of up to forty centimetres. The seeds are red and can reach five centimetres long.[4]

Distribution

This species is found in coastal regions of Eastern Cape Province, South Africa growing at heights of up to six hundred metres. It grows in a variety of different habitats on the mountain ridges from west of Joubertina in the Kouga mountains east to near Grahamstown. There are a large number of locations where breadpalms grow but on the whole, populations are declining.[3]

Historical note

In their book on South African trees, published in 1972, Eve Palmer and Norah Pitman wrote:

This was the first cycad seen by the early colonists pushing eastwards. This was Thunberg's breadtree; and this species almost changed the course of South African history for its seeds nearly killed General Smuts and men of a Boer commando in the eastern Cape during the Anglo-Boer War. Colonel Deneys Reitz writes in his book Commando how Smuts and his men, camping on the Suurberg, were poisoned after eating the seeds of Encephalartos altensteinii. Botanists today know that Reitz mistook the species, and that it was Thunberg's breadtree that poisoned the party.[2]

References

  1. ^ "Appendices | CITES". cites.org. Retrieved 2024-01-17.
  2. ^ a b Palmer, E. and Pitman, N. Trees of southern Africa, covering all known indigenous species in the Republic of South Africa, South-West Africa, Botswana, Lesotho & Swaziland. Cape Town (1972).
  3. ^ a b "Encephalartos longifolius (Suurberg Cycad, Thunberg's Cycad)". www.iucnredlist.org. Retrieved 2017-08-01.
  4. ^ "Encephalartos longifolius". plantnet.rbgsyd.nsw.gov.au. Archived from the original on 2014-06-23. Retrieved 2017-08-01.

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