Encephalartos dyerianus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Zamiaceae
Genus: Encephalartos
Species:
E. dyerianus
Binomial name
Encephalartos dyerianus
Lavranos & D.L.Goode

Encephalartos dyerianus, known colloquially as the Lillie cycad,[2] is a species of cycad that is native to hillsides in the lowveld of eastern Limpopo, South Africa.

Description

This cycad's stem grows up to 4 m tall and 60 cm wide. Its leaves are 140–170 cm long, blue-silver, slightly inclined, with straight petioles containing up to six spines. Leaflets are 17–24 cm long, 13–18 mm wide, toothed, and form angles of 45-80° with the leaf. Near the base, leaflets turn into thorns. The spine is typically straight but can be slightly twisted. This species is dioecious, with male cones 30–50 cm long, 9–12 cm in diameter, and blue-green or yellow; female cones are 30–60 cm long, 10–20 cm in diameter, and also blue-green or yellow. Seeds are elongated, 40–45 mm long, 25–30 mm wide, with a yellow or orange-brown sarcotesta.[3]

Range and habitat

It is native to the lowveld of eastern Limpopo. It occurs on slopes of low granite hills in the Gravelotte Rocky Bushveld, in either open grassland or shrubland.[4]

Status

It is listed under CITES Appendix I, which implies that it is "most endangered" in its natural range.[2] Some 600 plants remained in the wild during the 1970s, but this was further reduced during 2008.[4] In addition to illegal collecting, an application for strip mining in Selati Game Reserve is seen as a threat.[2]

References

  1. ↑ Donaldson, J.S. (2010). "Encephalartos dyerianus". IUCN Red List of Threatened Species. 2010: e.T41886A10568593. doi:10.2305/IUCN.UK.2010-3.RLTS.T41886A10568593.en. Retrieved 19 November 2021.
  2. 1 2 3 Bloom, Kevin (8 April 2021). "Mordor at the gates: The ploy to strip-mine Selati Game Reserve". Our burning planet. dailymaverick.co.za. Daily Maverick. Retrieved 29 September 2021.
  3. ↑ "Encephalartos dyerianus". PlantZAfrica. 2022-08-10. Retrieved 2024-01-03.
  4. 1 2 Donaldson, J.S. (2009). "Lillie's Cycad". National Assessment: Red List of South African Plants version 2020.1. Sanbi Redlist. Retrieved 29 September 2021.


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