Definitions for ebony spleenwort
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ebony spleenwort, Scott's Spleenwort, Asplenium platyneuron(noun)
common North American fern with polished black stripes
Asplenium platyneuron, commonly known as ebony spleenwort or brownstem spleenwort, is a fern native to North America east of the Rocky Mountains and to South Africa. It takes its common name from its dark, reddish-brown, glossy stipe and rachis, which bear a once-divided, pinnate leaf. The fertile fronds, which die off in the winter, are darker green and stand upright, while the sterile fronds are evergreen and lie flat on the ground. An auricle at the base of each pinna points towards the tip of the frond. The dimorphic fronds and alternate, rather than opposite, pinnae distinguish it from the similar black-stemmed spleenwort. The species was first described in 1753 by Linnaeus as Acrostichum platyneuros, although Linnaeus' type drew on material from several other species as well. It was more commonly called Asplenium ebeneum, a name published by William Aiton in 1789, until the rediscovery and revival of the Linnaean epithet in the late Nineteenth Century.
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"ebony spleenwort." Definitions.net. STANDS4 LLC, 2014. Web. 30 Aug. 2014. <http://www.definitions.net/definition/ebony spleenwort>.