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Restionaceae : ウィキペディア英語版 | Restionaceae
The Restionaceae, also called restiads and restios, are a family of perennial, evergreen rush-like flowering plants native to the Southern Hemisphere; they vary from 10 cm to 3 m in height. Based on evidence from fossil pollens, the Restionaceae likely originated more than 65 million years ago during the Late Cretaceous period, when the southern continents were still part of Gondwana.〔Bremer, K. (2002). "Gondwanan Evolution of the Grass Alliance of Families (Poales)." ''Evolution'', 56(7): 1374-1387. ()〕 == Description == The family consists of tufted or rhizomatous, herbaceous plants, rush-like or bamboo-like in overall appearance. They belong to a group of monocotyledons that includes several similar families, such as the sedges, rushes, and true grasses. They have green, photosynthetic stems and leaves that have been reduced to sheaths. Their flowers are extremely small and in spikelets, which in turn make up the inflorescences. Male and female flowers are on separate plants and, like grasses, are wind-pollinated.
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