在岩石上生长的一种具有黄褐色叶柄和披针形羽叶的北方温带蕨类。
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small north american evergreen fern whose stipes and lower frond surfaces are densely wooly .
叶柄和复叶下侧长有浓密茸毛的小型常绿北美蕨类。
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female flowers: on basal stipes of spadicles and main axis of inflorescence.
雌花:在在附属体柄顶部体柄和花序的主轴的基部。
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stipes crowded, 10-25 cm long, base slightly enlarged, triangular in transverse section.
叶柄簇生,长0-25厘米,基部稍膨大,横切面为三角形;
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stipes stout, up to 1. 2 m long, densely covered with golden brown hairs at base;
叶柄粗壮,长可达1.2米,基部亦密被金黄褐色毛;
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stipes chestnut brown to dark reddish brown, with linear-lanceolate brown scales at base;
叶柄栗褐色至暗紫红色,基部有褐棕色、线状披针形鳞片;
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stipes green, fleshy, hollow, variable in length according to the depth of water;
叶柄绿色,肉质,中空,长度因水的深度而不同;
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