Cystopteris fragilis

الوصف النباتي

Sori: Numerous, small, round, positioned along the veins near the midrib of each pinnule; indusia thin, translucent, attached at one side, early becoming reflexed or detached. Spores light brown, finely papillate.

الأوراق

Fronds: Blade ovate-lanceolate, bipinnate to tripinnate; rachis and stipe slender, light green, smooth or sparsely scaly near the base. Pinnae 10–20 pairs, opposite or subopposite, lanceolate, decreasing towards the apex. Pinnules ovate, serrulate, sometimes lobed, with distinct midveins.

مواسم النبات

الفنلوجية

Phenology: Fronds appear in spring and wither by late summer; fertile fronds mature from May to August.

الانتشار الموثق

Lebanese distribution: Recorded by Mouterde from high mountains of Mount Lebanon — notably Barouk, Dahr el-Baïdar, and the Sannine–Makmel range; rare but locally abundant near perennial springs and shaded rocks.

Native to: Afghanistan, Alaska, Albania, Alberta, Algeria, Altay, Amur, Arizona, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Cameroon, Canary Is., Cape Provinces, Cape Verde, Central European Russia, Chad, China North-Central, China South-Central, China Southeast, Chita, Colorado, Comoros, Connecticut, Corse, Czechia-Slovakia, Denmark, DR Congo, East European Russia, East Himalaya, Equatorial Guinea, Ethiopia, Finland, France, Free State, Føroyar, Germany, Great Britain, Greece, Greenland, Gulf of Guinea Is., Honduras, Hungary, Iceland, Idaho, Illinois, Inner Mongolia, Iowa, Iran, Iraq, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kansas, Kazakhstan, Kenya, Khabarovsk, Kirgizstan, Krasnoyarsk, Kriti, Krym, Kuril Is., KwaZulu-Natal, Labrador, Lebanon-Syria, Lesotho, Madagascar, Madeira, Magadan, Maine, Manchuria, Manitoba, Massachusetts, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mongolia, Montana, Morocco, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Hampshire, New Mexico, New York, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russia, Northern Provinces, Northwest European Russia, Northwest Territories, Norway, Nova Scotia, Nunavut, NW. Balkan Pen., Ohio, Ontario, Oregon, Pakistan, Pennsylvania, Poland, Portugal, Primorye, Qinghai, Québec, Romania, Réunion, Sakhalin, Sardegna, Saskatchewan, Saudi Arabia, Sicilia, South Dakota, Spain, Sudan-South Sudan, Svalbard, Sweden, Switzerland, Tadzhikistan, Taiwan, Tanzania, Tasmania, Texas, Tibet, Transcaucasus, Tunisia, Turkmenistan, Tuva, Türkiye, Türkiye-in-Europe, Uganda, Ukraine, Utah, Uzbekistan, Vermont, Victoria, Virginia, Washington, West Himalaya, West Siberia, Wisconsin, Wyoming, Xinjiang, Yakutiya, Yemen, Yukon (POWO).

Introduced into: Chatham Is. (POWO).

الارتفاع الموثق

الارتفاع

600 m

لمحة نباتية

بنية النبات

Life-form & habit: Small, delicate deciduous fern with slender, creeping rhizomes and tufted fronds 10–40 cm long. Rhizome densely covered with pale brown, lanceolate scales. Fronds arising singly or in small clusters, easily broken off at the base (hence fragilis ).

الفصيلة والتصنيف

الاسم العلمي المقبول

Cystopteris fragilis

الفصيلة

طحالية

نباتات من الفصيلة نفسها

الصدأ

Asplenium ceterach

طحالية جدارية

Asplenium ruta-muraria

خنشار سهمي

Asplenium sagittatum

لحاء الغول

Asplenium trichomanes