Hiya is a genus of ferns belonging to the family Dennstaedtiaceae. Described in 2018, it resembles ferns of the genus Hypolepis but differs from it by multiple characteristics: scrambling, indeterminate and intermittent growth of fronds; stipule-like pinnules at the base of pinnae, and a rachis-costa architecture where the adaxialsulcus of the rachis is continuous with that of the costae and costules.[1][2]
The name of the genus references the name given to imperial guards from the Qing dynasty of China, hiya, due to the prickly or very rough armed stipes present in the ferns.[1]
Classification
As of January 2023[update], the following species are accepted in the genus as currently circumscribed by the Checklist of Ferns and Lycophytes of the World:[3]
^ abcShang H, Sundue M, Wei R, Wei X, Luo J, Liu L, et al. (2018). "Hiya: A new genus segregated from Hypolepis in the fern family Dennstaedtiaceae, based on phylogenetic evidence and character evolution". Mol Phylogenet Evol. 127: 449–458. doi:10.1016/j.ympev.2018.04.038. PMID29723646. S2CID19089119.
^Schwartsburd PB, Perrie LR, Brownsey P, Shepherd LD, Shang H, Barrington DS, et al. (2020). "New insights into the evolution of the fern family Dennstaedtiaceae from an expanded molecular phylogeny and morphological analysis". Mol Phylogenet Evol. 150: 106881. doi:10.1016/j.ympev.2020.106881. ISSN1055-7903. PMID32512193. S2CID219550667.
