Lepidozamia
Lepidozamia peroffskyana
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Zamiaceae
Subfamily: Encephalartoideae
Tribe: Encephalarteae
Subtribe: Macrozamiinae
Genus: Lepidozamia
Regel[1]
Type species
Lepidozamia peroffskyana
Regel
Synonyms
  • Catakidozamia W.Hill

Lepidozamia is a genus of two species of cycad, both endemic to Australia.[1] They are native to rainforest climates in eastern Queensland and eastern New South Wales. They have a diploid chromosome number of 2n = 18.

Etymology

The name is derived from the Greek word lepis (λεπίς) meaning scale,[2] which refers to the scale-like structure of the stem and leaf bases.

Species

Phylogeny of Lepidozamia[3][4]

L. hopei (Hill ) Regel

Macrozamia fawcettii Moore

L. peroffskyana Regel

ImageScientific nameDistributionLeafCone
Lepidozamia hopei (W.Hill) Regelnorthern Queensland
Lepidozamia peroffskyana Regelsoutheastern Queensland, northeastern New South Wales

A specimen of L. hopei is known as the tallest living cycad at 17.5 m tall. These cycads are generally unbranched, tall, and with persistent leaf bases. They are easily cultivated as ornamental plants and are relatively cold hardy; L. peroffskyana was first described by a specimen grown at St. Petersburg's botanical garden in 1857.

L. hopei in understorey of the Daintree Rainforest, north-east Queensland
L. hopei: female plant with disintegrating cone containing seeds
L. hopei: tall plant in the Daintree Rainforest, north-east Queensland

References

  1. 1 2 Kew World Checklist of Selected Plant Families
  2. ↑ "λεπίς". Wiktionary.
  3. ↑ Stull, Gregory W.; Qu, Xiao-Jian; Parins-Fukuchi, Caroline; Yang, Ying-Ying; Yang, Jun-Bo; Yang, Zhi-Yun; Hu, Yi; Ma, Hong; Soltis, Pamela S.; Soltis, Douglas E.; Li, De-Zhu; Smith, Stephen A.; Yi, Ting-Shuang; et al. (2021). "Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms". Nature Plants. 7 (8): 1015–1025. bioRxiv 10.1101/2021.03.13.435279. doi:10.1038/s41477-021-00964-4. PMID 34282286. S2CID 232282918.
  4. ↑ Stull, Gregory W.; et al. (2021). "main.dated.supermatrix.tree.T9.tre". Figshare. doi:10.6084/m9.figshare.14547354.v1. {{cite journal}}: Cite journal requires |journal= (help)
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