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| Athyrium pycnocarpon ： ウィキペディア英語版 |
Diplazium pycnocarpon
==Description==
''Diplazium pycnocarpon'' (narrow-leaved glade fern, narrow-leaved-spleenwort, glade fern) is a tall slender-leaved fern growing as individuals with 5 to 6 leaves. The plant spreads by creeping underground stems allowing a small colony to develop over time. The leaf blade is oblong-lanceolate and once-pinnate, unlike the closely related ''Athyrium''. Leaves grow to about 90 cm (36 in) long and 15 cm (6 in) wide. The pinnae are linear and entire. Fertile leaves are similar but erect, narrower than sterile leaves and with longer stipes. The sori are long and narrow in two lines along the underside of a leaf pinna, giving rise to its specific epithet ''pycnocarpon'' ('crowded fruits').
Its common name description "narrow-leaved" is reflected in its original specific epithet by André Michaux in 1803: ''angustifolium'' (''angustus'' 'narrow' + ''folium'' 'leaf'). Michaux classified it in the genus ''Asplenium''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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