Alsophila montana

Cyathea costulisora
Scientific classification
Kingdom:	Plantae
Division:	Pteridophyta
Class:	Pteridopsida
Order:	Cyatheales
Family:	Cyatheaceae
Genus:	Cyathea
Subgenus:	Cyathea
Section:	Alsophila
Species:	C. costulisora
Binomial name
Cyathea costulisora Domin, 1930
Synonyms
Hemitelia montana Alderwerelt van Rosenburgh Alsophila montana (Alderwerelt van Rosenburgh) Tryon, 1970

Cyathea costulisora is a species of tree fern native to Sumatra. The trunk is erect and usually 1–4 m tall. Fronds are bi- or tripinnate and 1–2 m long. The stipe is covered with warts and scales. The scales are either pale and glossy or dark and flat. Sori occur near the fertile pinnule midvein and are covered by large, firm, brown indusia.

C. costulisora should not be confused with the similarly named Cyathea costalisora.

References

• Braggins, John E. & Large, Mark F. 2004. Tree Ferns. Timber Press, Inc., p. 117. ISBN 0-88192-630-2
• The International Plant Names Index: Cyathea costulisora