| Zamia roezlii | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Zamiaceae |
| Genus: | Zamia |
| Species: | Z. roezlii |
| Binomial name | |
| Zamia roezlii Linden | |
Zamia roezlii 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.[2] The tree is up to 22 feet (seven meters) in height with fronds up to ten feet (three meters) long bearing leaflets up to twenty inches (fifty centimeters) long and six inches (fifteen cm) wide.[3]>
References
- ↑ Stevenson, D.W. (2010). "Zamia roezlii". IUCN Red List of Threatened Species. 2010: e.T42178A10650286. doi:10.2305/IUCN.UK.2010-3.RLTS.T42178A10650286.en. Retrieved 16 November 2021.
- ↑ 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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