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(First upload on January 15 2013. Last on January 23 2017) [ 日本語 | English ]

Botrychium Sw. (ハナワラビ) O-hanawarabi (オオハナワラビ, 大花蕨), Japanese grape fern Lifeform: semi-evergreen perennial fern Distribution: China - Korea - Japan Habitat: forest floors Saw teeth: sharp top ↔ B. ternatum: obtuse top

Chromosome number: n = 135 Synonyms: Sceptridium japonicum (Prantl) Lyon var. silvicola (Sahashi) M. Kato (ゴジンカハナワラビ) Hybrids Botrychium japonicum (Prantl) Underw. × B. ternatum (Thunb.) Lyon

Botrychium japonicum in Japan

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[1] at a trail to go Yakuo-in Shrine on Mount Takao (599 m elevation), Tokyo, on October 21 2013. [2] at Inokashira Park, Mitaka, Tokyo, on January 15 2015. [3-5] in the Koishikawa-Korakuen Gardens (小石川後楽園), Tokyo, on November 18 2016.