Dryopteris crassirhizoma




Family Dryopteridaceae
Scientific name Dryopteris crassirhizoma Nakai
Synonyms Dryopteris filix-mas (L.) Schott, misapplied; Dryopteris buschiana Fomin; Dryopteris pseudo-filix-mas Nakai & Kodama; Dryopteris setosa Kudo
Common name (Japanese common name) o-shida [male fern]
(English common name) thick-stemmed wood fern
Distribution (Japan) Hokkaido, Honshu, Shikoku (Mt. Tsurugi)
(Other nations) Russia, Korea, China, Taiwan
Chromosomal number n=41 (2x)
Description Leaves 60-120cm length, micropinnulus 1.5-2.5cm width. Summer green. Terrestrial. Perennial plants.
Reference Dryopteris crassirhizoma Nakai
Dryopteris crassirhizoma Nakai



May 2007
at Koishikawa Botanical Garden
May 2007
at Koishikawa Botanical Garden
May 2007
at Koishikawa Botanical Garden



May 2007
at Koishikawa Botanical Garden
May 2007
at Koishikawa Botanical Garden
May 2007
at Koishikawa Botanical Garden