''Hiya'' is a genus of ferns belonging to the family
Dennstaedtiaceae
Dennstaedtiaceae is one of fifteen families in the order Polypodiales, the most derived families within monilophytes (ferns). It comprises 10 genera with ca 240 known species, including one of the world's most abundant ferns, ''Pteridium aquilin ...
. Described in 2018, it resembles ferns of the genus ''
Hypolepis'' but differs from it by multiple characteristics: scrambling, indeterminate and intermittent growth of
frond
A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists allow the term frond to also apply to the lar ...
s;
stipule
In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole). Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many speci ...
-like
pinnule
A leaflet (occasionally called foliole) in botany is a leaf-like part of a compound leaf. Though it resembles an entire leaf, a leaflet is not borne on a main plant stem or branch, as a leaf is, but rather on a petiole or a branch of the leaf. ...
s at the base of
pinnae, and a
rachis
In biology, a rachis (from the grc, ῥάχις [], "backbone, spine") is a main axis or "shaft".
In zoology and microbiology
In vertebrates, ''rachis'' can refer to the series of articulated vertebrae, which encase the spinal cord. In this c ...
-
costa
Costa may refer to:
Biology
* Rib (Latin: ''costa''), in vertebrate anatomy
* Costa (botany), the central strand of a plant leaf or thallus
* Costa (coral), a stony rib, part of the skeleton of a coral
* Costa (entomology), the leading edge of th ...
architecture where the