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Types of racemose inflorescence include the raceme, a spike of similar, stalked flowers, as seen in lupin Lupinus. A corymb, seen in candytuft Iberis amara, is rounded or flat-topped because the pedicels of the flowers vary in length, the outer pedicels being longer than the inner ones. A panicle is a branched inflorescence made up of a number of racemes; such inflorescences are seen in many grasses, for example, the oat Avena. The pedicels of an umbel, seen in members of the carrot family (Umbelliferae), all arise from the same point on the main axis, like the spokes of an umbrella. Other types of racemose inflorescence include the catkin, a pendulous inflorescence, made up of many small stalkless flowers; the spadix, in which tiny flowers are borne on a fleshy axis; and the capitulum, in which the axis is flattened or rounded, bears many small flowers, and is surrounded by large petal-like bracts.
The number of stripes changed frequently until around 1800. Red, white, and blue became the colours of liberty and an inspiration for other revolutionary flags around the world. Effective date: 19 February 1937.
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