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| [Note Guidelines] Photographer's Note |
Yellow iris popularly known as yellow flag flower.
The construction of the yellow iris flower is quite interesting: The large yellow petal-like structures with the dark veining are really the 3 sepals. The shorter petal-like structures that partially cover the sepals are really the 3 styles. Three stamens are hidden under the the styles. In the center of the flower are the 3 tiny (by comparison) petals. The total flower measures about 3 inches across.
Iris pseudacorus is a hearty, perennial monocot that regrows from thick, tuberous rhizomes. The rhizomes spread radially to produce large clonal populations. Rhizomes are drought tolerant while both rhizomes and seeds may be transplanted downstream during floods (Sutherland 1990). In the northwestern United States Iris pseudacorus often grows to such an extent that it is considered invasive and problematic. In its native habitat damage by insects or grazing animals is negligible (Sutherland 1990). In fact, yellow iris is poisonous. Even when dry it causes gastroenteritis in cattle |
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