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Athyriaceae Alston
蹄蓋蕨科
Athyriaceae
Athyrium vidalii (Fr. et Sav.) Nakai
Credit: Liu, Yea-chen
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Woodsiaceae (Diels) Herter 岩蕨科
Hypodematiaceae Ching腫足蕨科
Onocleaceae Pichi Sermollib球子蕨科
Description
Terrestrial ferns. Rhizome usually short and stout, sometimes creeping and slender; scales thin, light brown, brown, black to shiny black, lanceolate or ovate; stipes with 2 vascular strands at base and uniting into a single U- or V-shaped strand above. Lamina usually thin, pinnate to decompound (tripinnate), rarely simple (one species in Taiwan); veins usually free, goniopteroid in two species, and forming areolae in two species; some species bearing multicellular hairs; adaxial rachis groove generally open to receive costae grooves but not in all genera (Deparia). Sori linear, single or double, J-shaped, reniform or round. Indusia usually present, sometimes small and fugacious or absent.
陸生蕨類；根莖通常短而直立，有些種類具備長走莖或是根莖橫走；鱗片薄，淺棕色、棕色、黑色至具光澤黑色，批針型或卵圓形；葉柄基部具有兩個分開的維管束，在葉柄上方聯合成U或是V型。葉身通常薄，一回羽狀複葉或是更高回羽狀複葉(通常最多三回羽狀複葉)，僅一種呈單葉(單葉雙蓋蕨)；脈象通常為游離脈，僅兩種具小毛蕨脈型(過溝菜蕨及安蕨)，兩種具網脈(腸蕨及假腸蕨)；部份種類具有多細胞毛；葉軸近軸面上的溝通常與羽軸上的溝相通，但少數種類不通(擬蹄蓋蕨屬)。孢子囊群線型，單生或雙生，J型、圓腎型或是圓形。孢膜通常存在，少數種類小型或是早凋，部分屬缺少孢膜(貞蕨屬、羽節蕨屬)。
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Key to the genera
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| 1 |
Sterile and fertile leaf dimorphism |
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Pentarhizidium |
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Sterile and fertile leaf monomorphism |
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(2) |
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| 2 (1) |
Stipes or petioles articulated |
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(3) |
| + |
Stipes or petioles not articulated |
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(4) |
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| 3 (2) |
Sori with indusia |
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Woodsia |
| + |
Sori without indusia |
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Gymnocarpium |
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| 4 (2) |
Indusia round, inferior or semi-inferior |
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(5) |
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Indusia not as above or lacking |
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(6) |
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| 5 (4) |
Fonds and stipes with multicellular hairs |
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Acystopteris |
| + |
Fonds and stipes without hairs |
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Cystopteris |
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| 6 (4) |
Stipe base swollen |
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(7) |
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Stipe base not swollen |
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(11) |
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| 7 (6) |
Rhizome and stipe base covered densely reddish brown scales |
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Hypodematium |
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Rhizome and stipe base covered with brown or black scales |
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(8) |
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| 8 (7) |
Grooves on dorsal sides of rachis and costae disconnected |
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Deparia |
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Grooves on dorsal sides of rachis and costae connected |
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(9) |
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| 9 (8) |
Rhizome erect, rare thin and long creeping |
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(10) |
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Rhizome thick, long creeping |
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Anisocampium |
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| 10 (9) |
Indusia absent |
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Cornopteris |
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Indusia exist |
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Athyrium |
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| 11 (6) |
Veins anastomosing, two or more rows of areolace side by the costae |
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Diplaziopsis |
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Veins free, one species with goniopteroid vein form |
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(12) |
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| 12 (11) |
Scales black or reddish brown; indusia thin |
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Diplazium |
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Scales brown; indusia thick |
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Rhachidosorus |
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List of lower taxa
| Related Links (opens in a new window) |
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Treatments in Other Floras @ www.efloras.org
Other Databases
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