#rare fern

• Adiantum veitchianum — A rare species of perennial fern belonging to the Pteridaceae family, native to the mountainous regions and shaded forests of China. This plant is structurally distinguished by its delicate fronds, often arranged on slender, rigid, and glossy dark-brown stems, and by small, triangular-ovate pinnules, being cultivated exclusively in botanical gardens or private collections due to its taxonomic rarity.
• 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.