adiantum

Adiantum (maidenhair fern) is a genus of about 200 species of ferns in the family Pteridaceae, though some researchers place it in its own family, Adiantaceae. The genus name comes from the Greek, meaning "not wetting", referring to the fronds' ability to shed water without becoming wet.They are distinctive in appearance, with dark, often black stipes and rachises, and bright green, often delicately-cut leaf tissue. The sori are borne submarginally, and are covered by reflexed flaps of leaf tissue which resemble indusia. Dimorphism between sterile and fertile fronds is generally subtle.
See more at Wikipedia.org...

Noun
1. cosmopolitan genus of ferns: maidenhair ferns; in some classification systems placed in family Polypodiaceae or Adiantaceae
(synonym) genus Adiantum
(hypernym) fern genus
(member-holonym) Pteridaceae, family Pteridaceae
(member-meronym) maidenhair, maidenhair fern

n. adiantum

(n.)
A genus of ferns, the leaves of which shed water; maidenhair. Also, the black maidenhair, a species of spleenwort.
  

N
maidenhair| type of fern