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Ebony Spleenwort (Asplenium platyneuron)

Asplenium platyneuron, also known as ebony spleenwort or brownstem spleenwort, is a captivating fern with a unique charm. Its adaptability and distinctive features make it a noteworthy species in the plant kingdom.

Taxonomy and Nomenclature

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

Distribution and Habitat

• Native to North America, specifically east of unspecified boundaries.
• Commonly found on rocky slopes with thin soil, sometimes growing on nearly bare rock or mortar.
• Has broad habitat preferences, growing both on rocks and in a variety of soils.

Morphological Characteristics and Growth Habits

• A perennial fern that consists of either individual leaves or small tufts of simple-pinnate leaves.
• Individual leaves are 1-2 inches across. While the text also mentions leaves 6 to 20 inches long, the context is a description from Minnesota flora.
• Fertile fronds are longer and more erect than sterile fronds but otherwise similar.
• Relatively small fern, typically grows to 15-25 cm high.
• Has both arching, pinnate fronds.
• Culms are short, thick rhizomes.

Quirky Facts

• The name "ebony" refers to the stalk turning a shining black with age.
• The common name "spleenwort" derives from the historical belief that its shape resembled the human spleen, influencing its use by early herbalists.

Additional Information

• The fertile fronds of Asplenium platyneuron are longer and more erect than the sterile fronds.
• Asplenium is a large genus of ferns with about 700 species.