Zamia roezlii
| 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 | |
| Synonyms[2] | |
| |
Zamia roezlii (chigua[3]) is a species of cycad, a palm-like pachycaulous plant in the family Zamiaceae.[2][4] It is found in Colombia (Choco, Nariño, Valle del Cauca, and Amazonas departments) and the Pacific coast of Ecuador. It is named after 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. It is propelled by 40,000 cilia.[5] Drosophila bifurca, a species of fruit fly, has sperm that are 5.8 cm long, albeit mostly coiled tail.[6] The tree is up to 7 m in height with fronds up to 3 m (10 ft) long bearing leaflets up to 30–50 centimetres (12–20 in) long and 12–15 cm (4.7–5.9 in) wide.[7]
References
- ^ 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.
- ^ a b "Zamia roezlii Regel ex Linden". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved 27 June 2025.
- ^ "Zamia roezlii (Chigua) description". www.conifers.org. Retrieved 2024-10-23.
- ^ "Zamia roezlii Regel ex Linden". Catalogue of Life. Species 2000. n.d. Retrieved 27 June 2025.
- ^ Bright, Michael (2001). 1000 Wonders of Nature. London: Reader's digest Assoc. Ltd. pp. 264–265.
- ^ 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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