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Ornithogalum umbellatum
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Hyacinthaceae
Genus: Ornithogalum
Species: O. umbellatum
Binomial name
Ornithogalum umbellatum

Ornithogalum umbellatum (Star-of-Bethlehem, Grass Lily, Nap-at-Noon, Eleven-o'clock Lady), is a perennial bulbous flowering plant of the family Hyacinthaceae.[1] It is native throughout most of southern and central Europe (north to Austria and Belgium), and in northwestern Africa and southwestern Asia.[2] In North America, it has escaped its cultivation as a garden ornamental and can be found in many areas.[3]



This plant is perennial with bulbs below ground; the bulb is 15-25 mm long and 18-32 mm diameter. It has six to ten leaves, linear with a white line on upper surface, up to 30 cm long and 8 mm broad, and a scape of 10-30 cm. The flowers group in a corymbose raceme with 6-20 flowers, and are white with a green stripe outside.[4][5]


O. umbellatum require a lot of moisture during winter & spring, but tolerate summer droughtiness. It can be grown in the woodland garden. Semi-shade is preferable. It is hardy to hardiness zone 5, and can become weedy. The plant is toxic. Used in some herbal remedies.[6][7]



  1. ^ Hyacinthaceae in L. Watson and M.J. Dallwitz (1992 onwards). The families of flowering plants: descriptions, illustrations, identification, information retrieval. Version: 25th November 2008.
  2. ^ Euro+Med Plantbase: Ornithogalum umbellatum
  3. ^ "Ornithogalum umbellatum Linnaeus". Flora of North America.  
  4. ^ Flora of NW Europe: Ornithogalum umbellatum
  5. ^ Blamey, M. & Grey-Wilson, C. (1989). Flora of Britain and Northern Europe. ISBN 0-340-40170-2.
  6. ^ Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.
  7. ^ Purdue University vet school toxicity description


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