Athyrium

Athyrium (lady-fern) is a genus of about 180 species of terrestrial ferns, with a cosmopolitan distribution. It is placed in the family Athyriaceae, in the order Polypodiales.^[1][2] Its genus name is from Greek a- ('without') and Latinized Greek thyreos ('shield'), describing its inconspicuous indusium (sorus' covering).^[3] The common name "lady fern" refers in particular to the common lady fern, Athyrium filix-femina.^[4]

Athyrium
Athyrium filix-femina
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Polypodiales
Suborder:	Aspleniineae
Family:	Athyriaceae
Genus:	Athyrium Roth

19th-century illustration of A. filix-femina

Athyrium species are used as food plants by the larvae of some Lepidoptera species including the small angle shades and Sthenopis auratus.

Species

There are about 180, including:

Athyrium adpressum Athyrium alpestre Athyrium angustum Athyrium anisopterum Athyrium araiostegioides Athyrium arisanense Athyrium asplenioides Athyrium atkinsonii Athyrium attenuatum Athyrium auriculatum Athyrium austro-orientale Athyrium austro-yunnanense Athyrium biseralatum Athyrium bomicola Athyrium brevifrons Athyrium brevisorum Athyrium bucahwangense Athyrium caudipinna Athyrium chingianum Athyrium christensenii Athyrium clarkei Athyrium clivicola Athyrium criticum Athyrium cryptogrammoides Athyrium delavayi Athyrium delicatulum Athyrium densisorum Athyrium dentilobum Athyrium devolii Athyrium dissitifolium Athyrium distentifolium Athyrium drepanopterum Athyrium dubium Athyrium duthiei Athyrium epirachis Athyrium erithrocaulon Athyrium erythropodum Athyrium fallaciosum

Athyrium fangii Athyrium filix-femina Athyrium fimbriatum Athyrium fissum Athyrium flabellulatum Athyrium flavicoma Athyrium flexile Athyrium fragile Athyrium fujianense Athyrium giganteum Athyrium goeringianum Athyrium guangnanense Athyrium haleakalae Athyrium himalaicum Athyrium hirtirachis Athyrium huhsienense Athyrium imbricatum Athyrium iseanum Athyrium kanghsienense Athyrium kenzo-satakei Athyrium kuratae Athyrium leiopodum Athyrium liangwangshanicum Athyrium mackinnonii Athyrium macrocarpum Athyrium medium Athyrium medogense Athyrium melanolepis Athyrium mengtzeense Athyrium multidentatum Athyrium nakanoi Athyrium nephrodioides Athyrium nigripes Athyrium niponicum Athyrium nyalamense Athyrium oppositipinnum Athyrium otophorum Athyrium pachyphlebium Athyrium pachyphyllum

Athyrium pachysorum Athyrium parapellucidum Athyrium pectinatum Athyrium pellucidum Athyrium pseudo-filix-femina Athyrium pubicostatum Athyrium rachidosorum Athyrium reflexipinnum Athyrium roseum Athyrium rotundilobum Athyrium rubripes Athyrium rupicola Athyrium sessile Athyrium sikkimense Athyrium silvicolum Athyrium sinense Athyrium stenopodum Athyrium strigillosum Athyrium submacrocarpum Athyrium subrigescens Athyrium supraspinescens Athyrium tenuicaule Athyrium tenuifolium Athyrium tibeticum Athyrium tozanense Athyrium vidalii Athyrium tripinnatum Athyrium viviparum Athyrium wallichianum Athyrium wardii Athyrium wuliangshanense Athyrium yokoscense Athyrium yui Athyrium yunnanense