Hymenophyllum rarum

Description

Hymenophyllum rarum is a fern of the family HymenophyllaceaeSynonyms: Mecodium rarum R.Br.Copel. Hymenophyllum imbricatum Colenso Hymenophyllum semibivalve Hook. & Grev. Trichomanes rarum R.Br. Poir.Hymenophyllum rarum belongs to the subgenus MecodiumThis species has the following characteristics: its rhizome is long and filiform with spaced fronds; the slings, less than twenty centimeters long, have a limb divided twice; the whole plant is hairless; The sori, solitary, are borne by the extremity of a segment, mainly at the terminal part of the limb; the indusium, completely enclosing the sporangia, has two lips. This species has 28 or 29 pairs of chromosomes