Zamia roezlii (chigua[2]) is a species of cycad, a palm-like pachycaulous plant in the family Zamiaceae. It is found in Colombia (Choco, Nariño, Valle del Cauca, and Amazonas departments) and the Pacific coast of Ecuador. It is named for the Czech botanist Benedikt Roezl. A single sperm cell from Zamia roezlii is about 0.4 mm in length and is visible to the unaided eye, being the world's largest plant sperm cell. Drosophila bifurca, a species of fruit fly, has sperm that are 5.8 cm long, albeit mostly coiled tail.[3] The tree is up to 22 feet (seven meters) in height with fronds up to ten feet (three metres) long bearing leaflets up to twenty inches (fifty-one centimetres) long and six inches (fifteen centimetres) wide.[4]
| Zamia roezlii | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Zamiaceae |
| Genus: | Zamia |
| Species: | Z. roezlii
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| Binomial name | |
| Zamia roezlii Linden
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References
edit- ^ Lopez-Gallego, C.; Calonje, M. (2023) [errata version of 2022 assessment]. "Zamia roezlii". IUCN Red List of Threatened Species. 2022: e.T42178A243411399. doi:10.2305/IUCN.UK.2022-1.RLTS.T42178A243411399.en. Retrieved 12 November 2024.
- ^ "Zamia roezlii (Chigua) description". www.conifers.org. Retrieved 2024-10-23.
- ^ Pitnick, S.; Spicer, G.S.; Markow, T.A. (1995). "How long is a giant sperm?". Nature. 375 (6527): 109. Bibcode:1995Natur.375Q.109P. doi:10.1038/375109a0. PMID 7753164. S2CID 4368953.
- ^ Stevenson, Dennis (April–June 2004). "Cycads of Colombia". Bot. Rev. 70 (2): 228. doi:10.1663/0006-8101(2004)070[0194:COC]2.0.CO;2. S2CID 27405158.
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