What does asplenium mean?
Asplenium is the botanical name for a large genus of ferns known collectively as spleenworts, found across temperate and tropical regions worldwide. Members of the genus range from small rock-dwelling species with simple, tongue-shaped fronds — such as hart's-tongue fern and maidenhair spleenwort — to larger, finely divided epiphytic kinds grown as houseplants. The name derives from Greek, reflecting the ancient and medieval belief that these ferns could treat ailments of the spleen. In modern usage, "asplenium" appears mainly in gardening literature, field guides, and scientific writing, where precision matters more than everyday familiarity. Casual speakers almost always reach for the friendlier common names instead, but the word remains a useful term for anyone interested in ferns, shade gardens, or the quiet green life that colonises old walls and rocky banks.
nounA fern of the large cosmopolitan genus Asplenium (family Aspleniaceae), commonly known as spleenworts, typically having simple to finely divided fronds and often growing on rocks, walls, or trees.
- Any fern of the genus Asplenium (family Aspleniaceae), popularly called spleenworts.
"The old church wall was softened by tufts of asplenium thriving in the damp mortar."
"Hart's-tongue fern, an asplenium, unfurled its glossy strap-like fronds along the shaded stream bank."
"In the greenhouse collection, the aspleniums were prized for their delicate, feathered foliage."
Both plurals are accepted; "aspleniums" is standard in general usage, while "asplenia" reflects the Latin form and appears in formal scientific contexts.
"Several rare asplenia were recorded during the botanical survey of the gorge."
Named after the spleen itself — Renaissance herbalists were convinced this fern could cure spleen disorders, which is why botanists still call it Asplenium today.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of asplenium
Asplenium comes via New Latin from Greek asplēnon, the ancient name for a kind of fern thought to cure diseases of the spleen; the word combines the negative prefix a- with splēn, meaning "spleen." Linnaeus adopted the Greek term as the scientific genus name when he formalized botanical nomenclature in the eighteenth century. It thus shares its root with English "spleen," borrowed through Latin and Greek, and with derivatives such as "splenic." The common name "spleenwort" preserves the same medicinal folk tradition.
How asplenium is actually used
Chiefly used in botanical, horticultural, and gardening contexts; in everyday speech gardeners more often use the common name "spleenwort." The plural is either "aspleniums" or, in formal scientific usage, the Latinized "asplenia."
Easily confused with asplenium
"Spleenwort" is the common name for members of the same group, while "asplenium" is the formal botanical genus name.