| Family | Ophioglossaceae |
| Scientific name | Ophioglossum petiolatum Hooker |
| Synonyms | Ophioglossum cognatum C. Presl; Ophioglossum cumingianum C. Presl; Ophioglossum elongatum A. Cunningham; Ophioglossum floridanum E. P. St. John; Ophioglossum floridanum E. P. St. John forma favosum E. P. St. John; Ophioglossum floridanum E. P. St. John forma reticulosum E. P. St. John; Ophioglossum littorale Makino; Ophioglossum moluccanum Schlechtendal; Ophioglossum moluccanum Schlechtendal forma lanceolatum Raciborski; Ophioglossum obovatum Miquel; Ophioglossum raciborskii Alderwerelt van Rosenburgh; Ophioglossum timorense Miquel; Ophioglossum vulgatum L. var. australasiaticum Luerssen |
| Common name | (Japanese common name) ko-hiroha-hana-yasuri (コヒロハハナヤスリ, 小広葉花鑢 [meaning: tiny broad leaved rasp flower]) |
| (English common name) longstem adder's tongue, stalked adder's tongue | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China, Taiwan, worldwide (especially in tropical area) | |
| Habitat | Mountane forest or field |
| Chromosomal number | n=480, 2n=960, 1100 |
| Description | Vegatative leaves 1-6cm long, 0.7-3cm wide. Sporophylls 6-16cm long, strobiles 2-4.5cm long. Terrestrial. Summer green. |
| Reference | Ophioglossum petiolatum Hooker |
| Ophioglossum petiolatum Hook. | |
| Ophioglossum petiolatum Hook. | |
| Ophioglossum petiolatum Hook. | |
| Chromosomal Studies of Ferns and Fern-allies in the Republics of Fiji and Vanuatu, South Pacific I. Psilotaceae, Ophioglossaceae, Marattiaceae and Schizaeaceae | |
| Nuclear DNA Amounts in Pteridophytes | |
| Optoelectronic device and method of fabricating the same (US Patent 7524929/2009) | |
| Agent for hair growth (European Patent Application EP1915997/2008) | |
| Note | Some authors have noted that Ophioglossum petiolatum Hooker is a synonym of Ophioglossum reticulatum L. |
| September 2009 at my home |
September 2009 at my home |
September 2009 at my home |
| September 2009 at my home |