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| April 2008 at roadside |
April 2008 at roadside |
April 2008 at roadside |
| Family | Asteraceae (alt. Compositae) |
| Scientific name | Youngia japonica (L.) de Candolle |
| Synonyms | Chondrilla japonica (L.) Lamarck; Chondrilla lyrata Poiret; Crepis formosana Hayata; Crepis japonica (L.) Bentham; Crepis japonica (L.) Bentham var. genuina Hochreutiner; Crepis lyrata (Poiret) Bentham; Crepis taquetii (H. Léveillé & Vaniot) H. Léveillé; Lactuca taquetii H. Léveillé & Vaniot; Lactuca taraxacum H. Léveillé & Vaniot; Prenanthes fastigiata Blume; Prenanthes japonica L.; Prenanthes lyrata Thunberg; Prenanthes multiflora Thunberg; Prenanthes striata Blume; Youngia formosana (Hayata) H. Hara; Youngia gracilis Miquel; Youngia japonica (L.) de Candolle subsp. elstonii (Hochreutiner) Babcock & Stebbins; Youngia japonica (L.) de Candolle subsp. formosana (Hayata) Kitamura; Youngia japonica (L.) de Candolle subsp. genuina (Hochreutiner) Babcock & Stebbins; Youngia japonica (L.) de Candolle var. formosana (Hayata) H. L. Li; Youngia lyrata (Poiret) Cass.; Youngia multiflora (Thunberg) de Candolle; Youngia napifolia de Candolle ex Wight; Youngia paosa Steudel; Youngia thunbergiana de Candolle |
| Common name | (Japanese common name) oni-tabirako (オニタビラコ, 鬼田平子 [meaning: tiger tabirako (tabirako = wild plants which are living on rice paddy and surrounding areas)]) |
| (English common name) Asiatic hawksbeard, Japanese Hawkweed | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, India, Himalayas, Micoronesia, Australia | |
| Habitat | Roadside, farm yard, field |
| Chromosomal number | 2n=16 |
| Description | Plants electing 20-100cm tall. Leaves 8-15cm long, 1.7-6cm wide. Flowers yellow head 7-8mm across, flowering in all seasons (May to November in northern regions). Fruits ca. 1.8mm long. Annual or winter annual plants. |
| Reference | Youngia japonica (L.) DC. |
| Youngia japonica (Linneaus) de Candolle | |
| Cropping systems for managing weeds (WIPO Patent WO/2008/051633) | |
| Plant germination inhibitor and method of use thereof (European Patent EP1736053/2006) | |
| Biological control of weeds using the metabolites of Alternaria alternata (European Patent EP1849361/2007) |
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| April 2008 at roadside |
April 2008 at roadside |
April 2008 at roadside |
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| April 2008 at roadside |
April 2008 at roadside |
April 2008 at roadside |
