异名：Cyclosorus nigrescens Ching ex K. H. Shing (synonym)

Cyclosorus transitorius Ching, sp. nov.
Species affinis C. euphlebio Ching, a quo differt pinnis lateralibus versus basin la-tioribus, subtus internervis sparse brevi- pubescentibus, pagina frondis colore in sicco supranigro-brunnea, subtus fusca, stipitibus sporangiarum apice eglanduloso-punctatis.
Yunnan austr. -orient.: He-kou(河口) , Cai Ke-hua(蔡克华) No. 568(typus,PE), 25, N, 1953; 772, 791, l, V, 1953, by stream, alt. 220-380 m.

形体近河池毛蕨C. euphlebius Ching,但侧生羽片向基部变宽，下面脉间疏被短柔毛，叶干后上面黑褐色，下面暗棕色；孢子囊柄顶部无腺体。

本新种产云南。