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: 98

Accepted name

Osmunda lancea Thunb.

ヤシャゼンマイ

和名別名: オクノヤシャゼンマイ


Basionym and homotypic synonym(s)

Osmunda lancea Thunb., Syst. Veg. (ed. 14) 928, 1784. BHL Tropicos
Osmundastrum lanceum (Thunb.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5 5: 326, 1848. BHL Tropicos

Type information in the protologue:
Thunb. (inssula Nipon, in regionibus Fakoniae)
Digitized type material:
Herbarium & Reg. No. Type status Collector & No. Locality Coll. date
UPS-THUNB 25201HolotypeC.P. Thunberge Japonia
S-P-7276Isotype?Thunberg, Carl Peter, #s.n.Japonia

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

Osmunda lancea Thunb. f. takamiana Hiyama, J. Jap. Bot. 34(5): 139, 1959. Link

Type information in the protologue:
K. Takami (Hondo: Ichinohe, Ninohe-gun, Prov. Rikuchu, 1958.6.13) [TNS (holo)]

Information on ploidy level and reproductive mode

Chromosome number Ploidy level Reproductive mode Locality Remarks Reference
n=222xOwase, Mie Pref.Hirabayashi 1963 (J. Jap. Bot. 38: 332-333)
n=222xCultivated in Tokyo Univ. of EducationMitui 1968 (Sci. Rep. Tokyo Kyoiku Daigaku, Sec. B 13: 285-333)
2n=442xYoshiwara, Shizuoka Pref.; Itsukaichi, Hiroshima Pref.Tatuno & Yoshida 1966 (Bot. Mag. (Tokyo) 79: 244-252)