Polystichum imbricans (englisch narrowleaf swordfern[1], imbricate sword fern) ist eine Farn-Art aus der Familie der Wurmfarngewächse.
Sie ist im Westen Nordamerikas von British Columbia bis ins südliche Kalifornien beheimatet, wo sie in felsigen Lebensräumen an der Küste sowie im Inland in Bergregionen und deren Ausläufern vorkommt.
Die Art hat mehrere aufrechte gerade oder lanzettförmige Wedel von 20 bis zu 80 Zentimetern Länge. Jeder Wedel ist einfach gefiedert und besitzt zahlreiche überlappende, gelegentlich verzwirbelte Fiedern von 2 bis 4 Zentimetern Länge. Die Fiedern haben einen gezähnten Rand.[2]
Man kann zwei Unterarten unterscheiden:[2]
Bei dieser Art treten zahlreiche Hybride auf, von denen manche fruchtbar sind und für eigenständige Arten gehalten werden, so wie Polystichum californicum, die Hybride mit Polystichum dudleyi.
Polystichum imbricans (englisch narrowleaf swordfern, imbricate sword fern) ist eine Farn-Art aus der Familie der Wurmfarngewächse.
Polystichum imbricans is a species of fern known by the common names narrowleaf swordfern[1] and imbricate sword fern. It is native to western North America from British Columbia to southern California, where it grows in rocky habitat in coastal and inland mountain ranges and foothills. This fern produces several erect linear or lance-shaped leaves up to 80 centimeters long. Each leaf is made up of many narrow, overlapping, sometimes twisting leaflets each 2 to 4 centimeters long. The leaflets have toothed edges. This fern readily forms hybrids, some of which are fertile and are considered separate species, such as Polystichum californicum, its hybrid with P. dudleyi.
Polystichum imbricans is a species of fern known by the common names narrowleaf swordfern and imbricate sword fern. It is native to western North America from British Columbia to southern California, where it grows in rocky habitat in coastal and inland mountain ranges and foothills. This fern produces several erect linear or lance-shaped leaves up to 80 centimeters long. Each leaf is made up of many narrow, overlapping, sometimes twisting leaflets each 2 to 4 centimeters long. The leaflets have toothed edges. This fern readily forms hybrids, some of which are fertile and are considered separate species, such as Polystichum californicum, its hybrid with P. dudleyi.
Polystichum imbricans là một loài thực vật có mạch trong họ Dryopteridaceae. Loài này được (D.C. Eaton) D.H. Wagner miêu tả khoa học đầu tiên năm 1979.[1]
Polystichum imbricans là một loài thực vật có mạch trong họ Dryopteridaceae. Loài này được (D.C. Eaton) D.H. Wagner miêu tả khoa học đầu tiên năm 1979.
