#fern species

• Acrostichoides — A taxonomic term utilized as a specific epithet in bilingual botanical nomenclature to describe a plant species (most frequently ferns, such as Polystichum acrostichoides) whose fronds, fertile structures, or sori arrangements strikingly resemble morphologically those of the genus 'Acrostichum'.
• Adiantopsis pedata — A species of small terrestrial fern belonging to the Pteridaceae family, native to neotropical regions, particularly the Caribbean islands (such as Jamaica) and parts of South America. The plant is structurally recognized for its unique pedately divided leaves, with fine segments arranged like toes, attached to thin, black, shiny stipes (petioles), developing optimally in shaded limestone soils.
• Asplenium adiantumnigrum — A fern species in the genus Asplenium, popularly known as black spleenwort; it grows on siliceous rocks, old stone walls, and acidic soils in temperate regions. It is characterized by ovate-lanceolate, bi- or tri-pinnately divided fronds of a glossy dark green, supported by rigid stipes that are brownish-black at the base, a structural chromatic trait from which the specific epithet 'adiantum-nigrum' originates.
• Asplenium decorum — An exotic fern species in the genus Asplenium, found in isolated tropical or island regions (such as certain zones within Pacific Ocean archipelagos). This plant is characterized by a compact growth habit and fronds with an extremely ordered, elegant, and symmetrical geometry, a refined structural appearance from which the specific epithet 'decorum' (decorative / elegant) originates. It is a rare species, studied primarily in niche botanical monographs.
• Asplenium dimorphum — A rare species of perennial fern in the Aspleniaceae family, endemic to Norfolk Island in the Pacific Ocean, popularly known as the two-branched spleenwort. It stands out due to its spectacular structural phenomenon of foliar dimorphism, developing two completely different types of fronds on the same plant: the sterile ones are broad, glossy, and partially divided, while the fertile fronds, which bear the spores, are finely dissected into thread-like segments, giving the plant a highly distinctive exotic look.
• Asplenium trichomanes — A species of small, perennial fern in the Aspleniaceae family, popularly known as maidenhair spleenwort. It is a cosmopolitan plant that grows in the crevices of shaded limestone or siliceous rocks and on old stone walls. It is easily recognized by its long, narrow, simply pinnate fronds with rounded or oval leaflets attached to a rigid, glossy, dark brown to black stipe, which persists on the plant even after the green segments have withered.
• Asplenium viride — A species of small, perennial fern in the Aspleniaceae family, popularly known as green spleenwort. It is a mountain and alpine plant that grows exclusively in the crevices of damp, shaded rocks, with a strict preference for limestone substrates. It is morpho-structurally distinguished from related species by the fact that the central axis of the frond (the stipe and rachis) is entirely green along almost its entire length, being brown only at the extreme base near the rhizome.