Penthorum sedoides | range_map = Penthoraceae Distribution.svg | range_map_caption = The range of Penthorum. }} Penthorum is a genus of plants in the order Saxifragales. They are erect herbaceous perennials about half a meter tall. The genus consists of two species, one from east Asia and one from eastern North America. It is variously classified ...
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http://en.wikipedia.org/wiki/Penthorum
genus of perennial herbs native to East Asia and eastern North America. All three species in the genus have underground stems, toothed leaves, and ... [1 related articles]
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http://www.britannica.com/eb/a-z/p/40
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