Lepidozamia

Lepidozamia
Lepidozamia peroffskyana
Scientific 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
CatakidozamiaW.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

Image	Scientific name	Distribution	Leaf	Cone
	Lepidozamia hopei (W.Hill) Regel	northern Queensland
	Lepidozamia peroffskyana Regel	southeastern 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 Saint Petersburg 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. 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)

• The Cycad Pages: Lepidozamia
• Whitelock, Loran M. (2002). The Cycads. Timber Press. ISBN   9780881925227. OCLC   918275864.
• "Lepidozamia Regel". Atlas of Living Australia.