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Iris pseudacorus, Yellow iris, Yellow Waterflag, Jacob's sword
the only yellow iris in the U.S.

Scientific name:  Iris pseudacorus L.
Common name:  Yellow iris, Yellow Waterflag,Jacob's sword
Family:  Iridaceae, Iris Family

Iris pseudacorus, Yellow iris, Yellow Waterflag, Jacob's sword

Life form:  Geophyte
Stems:  2-3'; 75-160 cm high
Leaves:  Rosette, entire, leaves flattened
Flowers:  Yellow, brown-violet veining on the falls
Fruits / pods:  Loculicidal capsules
Flowering Period:  June, July, August
Habitat:  Humid habitats

Iris pseudacorus, Yellow iris, Yellow Waterflag, Jacob's sword


Derivation of the botanical name:
Iris, ιριϛ, ιδοϛ, rainbow; female messenger, announcer of the gods, the Greek goddess of the rainbow.
pseudacorus, ψευδηϛ, false, i.e. resembling but not equalling; acorus, the generic name of the sweet sedge.
Iris pseudacorus is simply often called " segg," a corruption of the word sedge, and both derived from the Anglo-Saxon word segg, a small sword, the name being employed in obvious allusion to the long sword-shaped leaves that rise so boldly from the water. It is also called the fleur-de-lys and the yellow flag, the outer segments of the perianth fluttering in the breeze in a degree that suggested to some early writers the waving of a flag.
  • The standard author abbreviation L. is used to indicate Carl Linnaeus (1707 – 1778), a Swedish botanist, physician, and zoologist, the father of modern taxonomy.

Iris pseudacorus, Yellow iris, Yellow Waterflag, Jacob's sword


 
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