Polystichum tripteron




Family Dryopteridaceae
Scientific name Polystichum tripteron (Kunze) C. Presl
Synonyms Aspidium tripteron Kunze; Dryoteris triptera (Kunze) O. Kuntze; Ptilopteris triptera (Kunze) Hayata; Polystichum tripteron (Kunze) C. Presl forma subbipinnatum H. Ito; Polystichum tripteron (Kunze) C. Presl forma pedatiforme Akasawa; Polystichum tripteron (Kunze) C. Presl var. simplicissimum Tagawa
Common name (Japanese common name) jyumonji shida [cross-shaped fern]
(English common name) trifid holly fern
Distribution (Japan) Hokkaido, Honshu, Shikoku, Kyushu
(Other nations) Russia, Korea, China
Chromosomal number n=41 (2x)
Description Leaves 20-50cm length. Evergreen or summer green. Perennial plants.
Reference Polystichum tripteron (Kunze) C. Presl
Polystichum tripteron (Kunze) C. Presl



April 2007
at Tsukuba Botanical Garden



May 2007
at Ibaraki Prefecture Botanical Garden
May 2007
at Ibaraki Prefecture Botanical Garden
May 2007
at Ibaraki Prefecture Botanical Garden



May 2007
at Ibaraki Prefecture Botanical Garden
May 2007
at Ibaraki Prefecture Botanical Garden
May 2007
at Ibaraki Prefecture Botanical Garden