Encephalartos cerinus

Last updated

Encephalartos cerinus
Encephalartos cerinus 0zz.jpg
Status iucn3.1 CR.svg
Critically endangered, possibly extinct in the wild  (IUCN 3.1) [1]
CITES Appendix I (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Zamiaceae
Genus: Encephalartos
Species:
E. cerinus
Binomial name
Encephalartos cerinus
Lavranos & D.L.Goode

Encephalartos cerinus or Waxen Cycad is a species of cycad in Africa.

Contents

Description

This cycad is stemless, growing from an underground stem that's about 30 cm long and 25 cm wide. Occasionally, a small part of the stem may emerge above the ground.

Its leaves, numbering from eight to ten, are flat and opaque, measuring 80–120 cm long, and have a bluish or silvery green hue. The leaflets, 15–18 cm long, are arranged oppositely along the rachis at an angle of 150–180°. They have a thick, waxy coating that releases a distinct odor when rubbed. The leaf margins are smooth with small teeth.

This species is dioecious, with male cones that are spindle-shaped, 55–60 cm long, and 9–10 cm wide. Female cones are ovoid, 30–35 cm long, and 15–18 cm in diameter. Each plant produces only one cone at a time, which changes color from bluish green to yellow as it matures.

The seeds are oblong, measuring 25–30 mm long, and are covered with an orange or yellow sarcotesta. [3]

Related Research Articles

<i>Encephalartos whitelockii</i> Species of plant

Encephalartos whitelockii is a species of cycad that is native to Uganda.

<i>Encephalartos trispinosus</i> Species of cycad

Encephalartos trispinosus is a species of cycad that is native to the Eastern Cape Province of South Africa.

<i>Encephalartos princeps</i> Species of cycad

Encephalartos princeps is a species of cycad that is native to Eastern Cape Province of South Africa.

<i>Encephalartos gratus</i> Species of cycad

Encephalartos gratus is a species of cycad that is native to Malawi and Mozambique.

<i>Encephalartos dolomiticus</i> Species of cycad

Encephalartos dolomiticus, the Wolkberg cycad, is a critically endangered species of cycad. It is only found in the Wolkberg at elevations of 1100–1500 meters. The area is near Penge in southeastern Limpopo Province, South Africa.

<i>Encephalartos cupidus</i> Species of cycad

Encephalartos cupidus is a species of cycad that is found in the Limpopo Province, South Africa at elevations of 700 up to 1,500.

<i>Encephalartos concinnus</i> Species of cycad

Encephalartos concinnus is a species of cycad in the family Zamiaceae. It is endemic to Zimbabwe. It is known as the Runde cycad.

<i>Encephalartos hildebrandtii</i> Species of plant in the family Zamiaceae

Encephalartos hildebrandtii is a species of cycad in the Zamiaceae family. It is native to Kenya and Tanzania at elevations from sea level to 600 metres (2,000 ft). The species is named for the German explorer Johann Maria Hildebrandt.

<i>Encephalartos chimanimaniensis</i> Species of cycad

The Chimanimani cycad is a species of cycad that is endemic to the Chimanimani Mountains of eastern Zimbabwe. It is a threatened species which has been locally extirpated by cycad collectors.

Encephalartos schmitzii is a species of cycad in Africa.

Encephalartos marunguensis, the Marungu cycad, is a species of cycad in Africa.

Encephalartos macrostrobilus is a species of cycad in Africa. It is found only in Moyo District, northwestern Uganda, which is populated predominantly by the ethnic Madi.

<i>Encephalartos aemulans</i> Species of cycad plant from South Africa

Encephalartos aemulans, the Ngotshe cycad, is a species of cycad endemic to South Africa. It is listed by the IUCN as Critically Endangered and by CITES in Appendix I. Only 100-250 are believed to be left, with a decreasing population trend. Its main threat is collecting of wild specimens.

Encephalartos dyerianus, known colloquially as the Lillie cycad, is a species of cycad that is native to hillsides in the lowveld of eastern Limpopo, South Africa.

Encephalartos heenanii is a species of cycad in Southern Transvaal Province, South Africa.

<i>Encephalartos humilis</i> Species of cycad

Encephalartos humilis is a species of cycad in the former Transvaal Province, South Africa.

<i>Encephalartos lanatus</i> Species of plant

Encephalartos lanatus is a species of cycad, a plant belonging to the family Zamiaceae growing in Mpumalanga, South Africa. Its specific epithet, lanatus, means wooly in Latin.

<i>Encephalartos ngoyanus</i> Species of cycad

Encephalartos ngoyanus is a species of cycad in Ngoye Forest, in KwaZulu-Natal, South Africa.

Encephalartos relictus, also known as the Parlota cycad, is a species of cycad in Eswatini. The cycad is evolutionarily extinct; the cycad has only male plants, meaning that they cannot produce seeds. However, J. J. P. du Preez was able to propagate some offshoots of the specimens.

<i>Encephalartos umbeluziensis</i> Species of cycad plant from Africa

Encephalartos umbeluziensis is a species of cycad from Africa.

References

  1. Bösenberg, J.D. (2023) [errata version of 2022 assessment]. "Encephalartos cerinus". IUCN Red List of Threatened Species . 2022: e.T41883A243424414. doi: 10.2305/IUCN.UK.2022-1.RLTS.T41883A243424414.en . Retrieved 1 July 2024.
  2. "Appendices". CITES. Retrieved 2022-01-14.
  3. "Encephalartos cerinus". PlantZAfrica. 2019-01-21. Retrieved 2024-01-03.