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Ebony Spleenwort: A Striking Fern

Asplenium platyneuron, also known as ebony spleenwort or brownstem spleenwort, is a distinctive fern with a unique appearance and intriguing history. Its ability to thrive in challenging environments makes it a fascinating plant for gardens and natural areas alike.

Nomenclature and Taxonomy

• Scientific Name: Asplenium platyneuron
• Synonym: Asplenium ebeneum
• Common Names: Ebony Spleenwort, Brownstem Spleenwort
• Family: Aspleniaceae

Distribution and Habitat

Ebony spleenwort is native to North America, primarily east of a certain defined boundary. It is commonly found on rocky slopes with thin soil, sometimes growing on nearly bare rock or mortar. It is also found in Georgia, Mississippi, and Minnesota.

Morphological Characteristics

• This perennial fern consists of either individual leaves or small tufts of simple-pinnate leaves.
• Individual leaves are typically 1-2 inches across and up to 20 inches long.
• The stalk turns a shining black with age, hence the common name "ebony" spleenwort.
• It can grow from 15-25 cm tall (approximately 6-10 inches).
• The leaves are once-compound, with alternate, narrowly triangular leaflets.
• Fertile fronds are longer and more erect than sterile fronds.
• The plant has short, thick rhizomes.

Ecological Role

Ebony spleenwort exhibits broad habitat preferences, growing both on rocks and in a variety of soils. It is an evergreen fern that can be found on rocky wooded ledges, rocky slopes, and mossy banks.

Quirky Facts

• The common name "spleenwort" derives from the historical belief that its shape resembled the human spleen, leading early herbalists to associate it with spleen-related ailments.
• It is said that it is the only common spleenwort, and the only one that typically occurs on soil rather than rock.