Oeosporangium is a genus of ferns in the subfamily Cheilanthoideae of the family Pteridaceae. The genus has not always been recognized. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I) it was included in Allosorus (a genus since subsumed into Aleuritopteris). It was accepted by the Checklist of the Ferns and Lycophytes of the World . As circumscribed there, the genus is native to the Old World.
Species , the Checklist of Ferns and Lycophytes of the World recognized the following species:
Oeosporangium belangeri (Bory) Fraser-Jenk. Oeosporangium chinense (Baker) Fraser-Jenk. Oeosporangium chusanum (Hook.) Fraser-Jenk. Oeosporangium contiguum (Baker) Fraser-Jenk. Oeosporangium coriaceum (Decne.) Fraser-Jenk. & Pariyar Oeosporangium delicatulum (Tagawa & K.Iwats.) Fraser-Jenk. & Pariyar Oeosporangium elegans (Poir.) Fraser-Jenk. & Pariyar Oeosporangium fragile (Hook.) Fraser-Jenk. Oeosporangium guanchicum (Bolle) Fraser-Jenk. & Pariyar Oeosporangium hancockii (Baker) Fraser-Jenk. Oeosporangium hispanicum (Mett.) Fraser-Jenk. & Pariyar Oeosporangium insigne (Ching) Fraser-Jenk. Oeosporangium kuhnii (Milde) Fraser-Jenk. Oeosporangium mairei (Brause) Fraser-Jenk. Oeosporangium nitidulum (Hook.) Fraser-Jenk. Oeosporangium pteridioides (Reichard) Fraser-Jenk. & Pariyar Oeosporangium patulum (Baker) Fraser-Jenk. Oeosporangium pauperculum (Christ) Fraser-Jenk. & Pariyar Oeosporangium persica (Bory) Vis. Oeosporangium pulchellum (Bory ex Willd.) Fraser-Jenk. & Pariyar Oeosporangium smithii (C.Chr.) Fraser-Jenk. & Pariyar Oeosporangium stramineum (Ching) Fraser-Jenk. Oeosporangium subvillosum (Hook.) Fraser-Jenk. & Pariyar Oeosporangium nudiusculum (R.Br.) comb. ined. Oeosporangium tenuifolium (Burm.f.) Fraser-Jenk. & Pariyar Oeosporangium thwaitesii (Mett. ex Kuhn) Fraser-Jenk. Oeosporangium tinaei (Tod.) Fraser-Jenk. Oeosporangium tirajanae (T.S.Velázquez) comb. ined. Oeosporangium trichophyllum (Baker) Fraser-Jenk. Oeosporangium velutinum (Tardieu & C.Chr.) Fraser-Jenk. Oeosporangium viride (Forsk.) Fraser-Jenk. & Pariyar Oeosporangium yunnanense (Ching) Fraser-Jenk. & Pariyar
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