Alsophila metteniana

Alsophila metteniana, synonym Cyathea metteniana,[1] is a species of tree fern native to the Ryukyu Islands, Japan, and Taiwan, where it grows in wet forest, forest margins, and on hillsides. The trunk of this plant is erect, up to 1 m tall, and 6–10 cm in diameter. C. metteniana has tripinnate fronds that are 1–2.5 m long. The stipe is brown to purple-black in colouration. It is covered in long, broad-based scales that are usually bicoloured (glossy brown with a paler margin). Sori are round, lack indusia, and occur in two rows, one on either side of the pinnule midvein.[2]

Alsophila metteniana
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Cyatheales
Family: Cyatheaceae
Genus: Alsophila
Species:
A. metteniana
Binomial name
Alsophila metteniana
Hance[1]
Synonyms[1]
  • Alsophila formosana Baker
  • Alsophila lamprocaulis (Christ) Ching
  • Aspidium lamprocaulon Christ
  • Cyathea formosana (Baker) Copel.
  • Cyathea lamprocaulis (Christ) Ching
  • Cyathea metteniana (Hance) C.Chr. & Tardieu
  • Dryopteris lamprocaulis (Christ) C.Chr.
  • Gymnosphaera formosana (Baker) Copel.
  • Gymnosphaera lamprocaulis (Christ) Ching ex L.K.Ling
  • Gymnosphaera metteniana (Hance) Tagawa

The specific epithet metteniana commemorates pteridologist Georg Heinrich Mettenius (1823-1866), who named several Cyathea species.[2]

References
  1. Hassler, Michael & Schmitt, Bernd (June 2019). "Alsophila metteniana". Checklist of Ferns and Lycophytes of the World. 8. Retrieved 2019-08-21.
  2. Large, Mark F. & Braggins, John E. (2004). Tree Ferns. Timber Press. p. 223. ISBN 978-0-88192-630-9.
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