Cycas zeylanica
| Cycas zeylanica | |
|---|---|
| |
| In Lund Botanical Gardens | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Cycadaceae |
| Genus: | Cycas |
| Species: | C. zeylanica
|
| Binomial name | |
| Cycas zeylanica (J.Schust.) A.Lindstr. & K.D.Hill
| |
| Synonyms[2] | |
|
Cycas rumphii subsp. zeylanica J.Schust. | |
Cycas zeylanica, common name (in Sri Lanka) maha-madu is a plant apparently at present endemic to the Andaman and Nicobar Islands. It was formerly also present in Sri Lanka, but a majority of the population there were destroyed by the tsunami of December 2004.[1][3] A few trees are cited in Hanguranketha town Adikarigama area.
Cycas zeylanica is an unbranched shrub up to 3 m (9.8 ft) tall. Leaves are up to 200 cm (79 in) long, green, glossy, pinnately compound with up to 100 leaflets. Pollen-producing cones fusiform (tapering at both ends), microsporophylls (male, pollen-producing) up to 45 mm (1.8 in) long. Megasporophylls (female, ovule-producing) up to 30 cm (12 in) long, each with 2-5 ovules. Seeds flattened to ovoid, orange-brown.[4][5]
References
- ^ a b Lindstrom, A. (2023) [errata version of 2022 assessment]. "Cycas zeylanica". IUCN Red List of Threatened Species. 2022 e.T42098A243421803. doi:10.2305/IUCN.UK.2022-1.RLTS.T42098A243421803.en.
- ^ The Plant List
- ^ Christenhusz, M. J. M., J. L. Reveal, A. K. Farjon, M. F. Gardner, R. R. Mill & M. W. Chase. 2011. A new classification and linear sequence of extant gymnosperms. Phytotaxa 19: 55–70.
- ^ Lindstrom, AJ, & KD Hill. 2002. Notes on the species of Cycas (Cycadaceae from Sri Lanka and the islands of the Andaman Sea. Novon 12:237-240.
- ^ Schuster, Julius. 1932. Das Pflanzenreich 99: 75, pl. 10C–D, llK–M.