Cycas taitungensis

Cycas taitungensis is a species of genus Cycas endemic to Taitung County, south-eastern Taiwan. C. taitungensis, an evergreen tree, can grow up to about 5 m (16 ft) tall.[2] The species was not described until 1994, but its specimen was once applied as the type of species Cycas taiwaniana, which is not really distributed in Taiwan according to the further research.[3]

Cycas taitungensis
Cycas taitungensis in the Botanischer Garten München-Nymphenburg, Germany
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Cycadaceae
Genus: Cycas
Species:
C. taitungensis
Binomial name
Cycas taitungensis
Shen, Hill, Tsou & Chen

C. taitungensis was listed by the IUCN Red List of Threatened Plants in category "vulnerable" in 1997. However, small range, decline of mature specimens, and attack by invasive Aulacaspis scale (Diaspididae) warranted classification as "endangered" in 2010.[1]

Distribution

C. taitungensis is found in:

  • Lu-Yeh Valley near Yanping Township (延平鄉)
  • to the west of the Taitung Coastal Range in Donghe Township (東河鄉)

In Taitung Hungyeh Village Cycas Nature Reserve,[4] it is threatened by Aulacaspis yasumatsui, the cycad aulacaspis scale.

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References
  1. Haynes, J. (2010). "Cycas taitungensis". IUCN Red List of Threatened Species. 2010: e.T42067A10642224. doi:10.2305/IUCN.UK.2010-3.RLTS.T42067A10642224.en.
  2. Jiarui Chen & Dennis W. Stevenson. "Cycas taitungensis". Flora of China. Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. Retrieved 27 September 2012.
  3. Shen, C. F.; K.D. Hill; C. H. Tsou; C. J. Chen (1994). "Cycas taitungensis C.F. Shen, K.D. Hill, C.H. Tsou & C.J. Chen, sp. nov. (Cycadaceae), a new name for the widely known cycad species endemic in Taiwan" (PDF). Botanical Bulletin of Academia Sinica. 35: 133–140.
  4. http://conservation.forest.gov.tw/EN/0000499
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