Asplenium antiquum

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Asplenium antiquum
Scientific classification edit
Kingdom: Plantae
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Aspleniaceae
Genus: Asplenium
A. antiquum
Binomial name
Asplenium antiquum

Asplenium antiquum is a fern of the group known as bird's-nest ferns. In Japanese it is known by ō-tani-watari and tani-watari.[1]


The fern is native to temperate East Asia, in China, Japan, Korea, and Taiwan on cliffs, dark forests, and tree trunks.[1][2] It is an IUCN endangered species in its native habitats.[1]


Asplenium antiquum is an evergreen fern, 2–3 ft. (60–90 cm).[2] It has bright green, arching blades with a pointed end and a strong midrib.[2] Asplenium antiquum can readily be distinguished from the closely related Asplenium nidus by its fronds of uniform width.


The fern is commonly available in the plant nursery trade as an ornamental plant in subtropical climates, and a house plant in the United States and Europe in zones 9 and 10. It requires high humidity and bright indirect light, so does best in a greenhouse or terrarium if grown indoors.[2] It needs minimal watering and minimal soil (similar to an orchid).[2]

Chemical composition[edit]

Mearnsetin 3,7-dirhamnoside, a glycoside of the flavonol mearnsetin, can be found in A. antiquum.[3]


  1. ^ a b c "Asplenium antiquum". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 21 January 2018.
  2. ^ a b c d e Olsen, Sue. Encyclopedia of Garden Ferns. 2007.
  3. ^ Mearnsetin 3,7-dirhamnoside from Asplenium antiquum. Mizuo Mizuno, Yosuke Kyotani, Munekazu Iinuma, Toshiyuki Tanaka, Hiroyuki Kojima and Kunio Iwatsuki, Phytochemistry, Volume 30, Issue 8, 1991, pages 2817-2818, doi:10.1016/0031-9422(91)85158-V

See also[edit]