Family: Thelypteridaceae ヒメシダ科 > Genus: Thelypteris Adans. ヒメシダ属
GreenList Taxon ID: 410
Accepted name
Thelypteris laxa (Franch. et Sav.) Ching
ヤワラシダ
和名別名: ウスゲヤワラシダ
Basionym and homotypic synonym(s)
Aspidium laxum Franch. et Sav., Enum. Pl. Jap. 2: 631, 1879. BHL Tropicos
≡ Nephrodium laxum (Franch. et Sav.) Diels, Bot. Jahrb. Syst. 29(2): 189, 1900. BHL Tropicos
≡ Dryopteris laxa (Franch. et Sav.) C.Chr., Index Filic. 274, 1905. BHL Tropicos
≡ Thelypteris laxa (Franch. et Sav.) Ching, Bull. Fan Mem. Inst. Biol., Bot. 6(5): 333, 1936. Tropicos
≡ Lastrea laxa (Franch. et Sav.) Copel., Gen. Fil. [Copeland] 139, 1947. Link Tropicos
≡ Metathelypteris laxa (Franch. et Sav.) Ching, Acta Phytotax. Sin. 8(4): 306, 1963. Tropicos
Type information in the protologue:
Savatier (Nippon, circa Yokoska)Digitized type material:
| Herbarium & Reg. No. | Type status | Collector & No. | Locality | Coll. date |
|---|---|---|---|---|
| P00643917 | Holotype | Savatier, #s.n. | Yokoska, in silvis humidis | 1866 |
Heterotypic synonym(s) and/or incorporated taxa (forma or lower)
"ウスゲヤワラシダ"
Thelypteris laxa (Franch. et Sav.) Ching f. glabrescens H.Itô, Nov. Fl. Jap. 4: 140, 1938.
Type information in the protologue:
([no info])Information on ploidy level and reproductive mode
| Chromosome number | Ploidy level | Reproductive mode | Locality | Remarks | Reference |
|---|---|---|---|---|---|
| n=72 | 4x | Kikugawa, Shizuoka Pref. | Kurita 1963a (J. Coll. Arts Sci. Chiba Univ. 4: 43-52) | ||
| 2n=136 | 4x | Mt.Tsukubasan, Ibaraki Pref. | Kurita 1963a (J. Coll. Arts Sci. Chiba Univ. 4: 43-52) | ||
| 2n=136 | 4x | Tokyo | x=34 | Nakato 1998b (J. Jap. Bot. 73: 119-124) | |
| 2n=134 | 4x | Yamagata, Tokyo, Yamanashi, Ishikawa, Shizuoka, Mie, Wakayama, Fukuoka, Oita | hypo-4x | Nakato 1998b (J. Jap. Bot. 73: 119-124) |