Index to
Ferns and Lycophytes of Japan

Family: Osmundaceae ゼンマイ科 > Genus: Osmunda L. ゼンマイ属
GreenList Taxon ID: 99

Accepted name

Osmunda x intermedia (Honda) Sugim.

オオバヤシャゼンマイ

和名別名: オクタマゼンマイ


Basionym and homotypic synonym(s)

Osmunda japonica Thunb. var. intermedia Honda, Bot. Mag. (Tokyo) 44(524): 409, 1930. Link
Osmunda x intermedia (Honda) Sugim., Shokubutsu Kensakushi 1: 9, 1951. Tropicos
Osmunda lancea Thunb. f. intermedia (Honda) Tagawa, Acta Phytotax. Geobot. 15(3): 96, 1953. Link

Type information in the protologue:
M. Honda (Hondo: Hikawa, prov. Musashi, 1930)

Heterotypic synonym(s) and/or incorporated taxa (forma or lower)

Osmunda lancea Thunb. var. latipinnula Tagawa, J. Jap. Bot. 22(10): 160, 1948. Link

Type information in the protologue:
M. Tagawa 2338 (Japan. Pref. Wakayama austr.: Mt. Nati) [KYO (holo)]
Digitized type material:
Herbarium & Reg. No. Type status Collector & No. Locality Coll. date
L0051939IsotypeTagawa M., #2338Pref. Wakayama, prov. Kii, in monte Nati1942-7-21
P00709792IsotypeTagawa M., #2338Pref. Wakayama, prov. Kii, in monte Nati1942-7-21

Information on ploidy level and reproductive mode

Chromosome number Ploidy level Reproductive mode Locality Remarks Reference
n=222xMt.Takaosan, Tokyo Pref.Kurita 1963a (J. Coll. Arts Sci. Chiba Univ. 4: 43-52)
n=22, (2n=44)2xirrFuji City, Shizuoka Pref.Shimura & Matsumoto 1977 (J. Jap. Bot. 52: 377-378)
2n=442xYoshiwara, Shizuoka Pref.; Itsukaichi, Hiroshima Pref.Tatuno & Yoshida 1966 (Bot. Mag. (Tokyo) 79: 244-252)