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''Pellaea mucronata'' is a species of fern known by the common name bird's foot cliffbrake. It is native to much of California, and parts of Oregon, Nevada, Arizona, and Baja California, where it grows in various types of rocky habitat. The subspecies ''californica'' is limited to California, while ssp. ''mucronata'' can be found outside that state's borders. Each leaf is 7 to 45 centimeters long and is borne on a thin petiole. It is composed of a thin, straight, brown rachis lined with widely spaced leaflets. The leaflets are divided into small narrow terminal segments, or these may be subdivided into another set of segments. The smallest segment is up to about a centimeter long and is green to dark purplish in color. The edges may be rolled under. The sporangia are located under the edges. ==External links== *(Jepson Manual Treatment ) *(USDA Plants Profile ) *(Flora of North America ) *(Photo gallery ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pellaea mucronata」の詳細全文を読む スポンサード リンク
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