Pteridophytes (Spore Producing Plants: Ferns and More) • Earth.com

Hymenophyllum rarum

(Hymenophyllum rarum)

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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

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum:
Class: Polypodiopsida
Order:Hymenophyllales
Family:Hymenophyllaceae
Genus:Hymenophyllum
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