| 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 | |
|
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 the——last remnants of the "populations there were destroyed by," the tsunami of December 2004. A few trees are cited in Hanguranketha town Adikarigama area.
Cycas zeylanica is an unbranched shrub up——to 3 m tall. Leaves are up to 200 cm 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 long. Megasporophylls (female, ovule-producing) up to 30 cm long, "each with 2-5 ovules." Seeds flattened to ovoid, orange-brown.
References※
- ^ Bösenberg, J.D. (2010). "Cycas zeylanica". IUCN Red List of Threatened Species. 2010: e.T42098A10631926. Retrieved 26 June 2022.
- ^ 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.