| Family | Hyacinthaceae (also placed in Liliaceae) |
| Subfamily | Ornithogaloideae |
| Scientific name | Ornithogalum umbellatum L. |
| Synonyms | Hyacinthus umbellatus (L.) E. H. L. Krause; Ornithogalum boraeanum Jordan & Fourreau; Ornithogalum cespititium Jordan & Fourreau; Ornithogalum declinatum Jordan & Fourreau; Ornithogalum divergens Boreau; Ornithogalum parviflorum Jordan & Fourreau; Ornithogalum paterfamilias Godron; Ornithogalum proliferum Jordan & Fourreau; Ornithogalum rusticum Jordan & Fourreau; Ornithogalum tardans Jordan & Fourreau; Ornithogalum umbellatum L. proles paterfamilias (Godron) Rouy; Ornithogalum umbellatum L. subsp. campestre Rouy; Ornithogalum umbellatum L. subsp. divergens (Boreau) Bonnier & Layens; Ornithogalum umbellatum L. subsp. paterfamilias (Godron) Ascherson & Graebner; Ornithogalum umbellatum L. var. paterfamilias Godron; Stellaris narbonensis Walther |
| Common name | (Japanese common name) oh-ama-na (オオアマナ, 大甘菜 [meaning: large ama-na (ama-na = Tulipa edulis (Miquel) Baker)]) |
| (English common name) nap at noon, sleepy Dick, star of Bethlehem | |
| Distribution | (Japan) Honshu (mainly in Kanto region) |
| (Other nations) [native] Ukraine, Turkey, Cyprus, Greece, Italy, Romania, Yugoslavia, Albania, Bulgaria, Hungary, Switzerland, Austria, Netherlands, Belgium, France, Portugal, Spain, Algeria, Morocco | |
| Habitat | Field, roadside |
| Chromosomal number | 2n=18, 20, 27, 28, 35, 36, 42, 44, 45, 54, 72, 90, 108 |
| Description | Plants 15-40cm tall. Flowers while, 6 perianths each ca. 1.5-2cm long, flowering in July to August. Perennial plants. |
| Referebce | Ornithogalum umbellatum L. |
| Ornithogalum umbellatum Linnaeus | |
| Magnetically influenced homeopathic pharmaceutical formulations, methods of their preparation and methods of their administration (US Patent 5162037/1992) | |
| Homeopathic pharmaceutical compositions (US Patent 5795573/1998) | |
| Topical treatment of neuropathy (US Patent 20030157185) | |
| Oligonucleotide-containing pharmacological compositions and their use (US Patent 20030207834) | |
| Note | Naturalized plants. |
| Invasive plants. | |
| Distinction with Ornithogalum gussonei Tenore (syn. Ornithogalum collinum Gussone; Ornithogalum tenuifolium Gussone) is not so obvious. |
| April 2007 at lowland field |
April 2007 at lowland field |
April 2007 at lowland field |