目前为止，中国西南野生生物种质资源库共保藏该物种: DNA材料3份; DNA9份; 离体材料2份;

• 科:乌毛蕨科    Blechnaceae
• 属:苏铁蕨属   Brainea
• 种:苏铁蕨   Brainea insignis

1. Brainea insignis (Hooker) J. Smith, Cat. Ferns Roy. Gard. Kew. 5. 1856. 苏铁蕨 su tie jue Bowringia insignis Hooker, Hooker?s J. Bot. Kew Gard. Misc. 5: 237. 1853; Brainea formosana Hayata; B. insignis var. formosana (Hayata) Tagawa.Stem blackish brown, erect, stout, up to ca. 1 m tall, 10-15 cm in diam., woody, apex scaly; scales rufous, linear, up to 3 cm, membranous, acuminate. Fronds clustered in terminal crown, slightly dimorphic; stipe brownish stramineous, 10-30 cm, basal part scaly; lamina pinnate, elliptic-lanceolate, 50-100 cm, slightly narrowed downward, leathery, abaxially with some small scales along costa and veins; pinnae 30-55 pairs, opposite or alternate, subsessile, linear to narrowly oblong; middle pinnae 10-15 × 0.7-1.2 cm, base asymmetrical, subauriculate, margin serrulate; basal pinnae slightly shortened; veins free, simple or 1- or 2-forked, except for costal row of areoles subtriangular; fertile pinnae somewhat shorter, margin sometimes irregularly lobed; rachis stramineous, grooved adaxially. Sori borne on costal veins, exindusiate, abundant, covering whole abaxial surface of pinnae when mature. 2n = 66.Damp and exposed hillsides; 300-1700 m. Fujian, Guangdong, Guangxi, Guizhou (Anlong, Zhenning), Hainan, C Taiwan, Yunnan [tropical regions of Asia].【引自：Flora of China】

植株高达1.5米。主轴直立或斜上，粗约10-15厘米，单一或有时分叉，黑褐色，木质，坚实，顶部与叶柄基部均密被鳞片；鳞片线形，长达3厘米，先端钻状渐尖，边缘略具缘毛，红棕色或褐棕色，有光泽，膜质。叶簇生于主轴的顶部，略呈二形；叶柄长10-30厘米，粗3-6毫米，棕禾秆色，坚硬，光滑或下部略显粗糙；叶片椭圆披针形，长50-100厘米，一回羽状；羽片30-50对，对生或互生，线状披针形至狭披针形，先端长渐尖，基部为不对称的心脏形，近无柄，边缘有细密的锯齿，偶有少数不整齐的裂片，干后软骨质的边缘向内反卷，下部羽片略缩短，彼此相距2-5厘米，平展或向下反折，羽片基部略覆盖叶轴，向上的羽片密接或略疏离，斜展，中部羽片最长，达15厘米，宽7-11毫米，羽片基部紧靠叶轴；能育叶与不育叶同形，仅羽片较短较狭，彼此较疏离，边缘有时呈不规则的浅裂。叶脉两面均明显，沿主脉两侧各有1行三角形或多角形网眼，网眼外的小脉分离，单一或一至二回分叉。叶革质，干后上面灰绿色或棕绿色，光滑，下面棕色，光滑或于下部（特别在主脉下部）有少数棕色披针形小鳞片；叶轴棕禾秆色，上面有纵沟，光滑。孢子囊群沿主脉两侧的小脉着生，成熟时逐渐满布于主脉两侧，最终满布于能育羽片的下面。染色体2n=66。【引自：中国植物志】