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Thelypteridaceae

金星蕨科

特徵描述
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特徵描述

作者

TSAI, JINN-LAI and SHIEH, WANG-CHUENG

型態特徵

Terrestrial ferns; rhizomes usually creeping but not dorsiventral in structure, dictyostelic; rhizome-scales usually rigid, not peltate at the base, bearing unicellular needle-like hairs on margins and often on surfaces. Stipes containing 2 vascular bundles at the base and uniting to form a single strand U-shaped in section; laminae usually oblong or narrowly elliptic in outline, bipinnatifid, rarely bipinnate; surfaces bearing slender unicellular or rarely 2-celled hairs, sometimes also short glandular hairs; costae raised on upper surface at base, grooved or not, if grooved, not open to the groove of rachis; veins all free, pinnately arranged in each lobe of pinnae, or with veins of adjacent groups joining to form an areele towards the sinus between the lobes; sinuses closed at the base by a translucent membrane. Sori usually subapical on the veins, round or somewhat elongate; indusia renifonm, rarely naked. Spores always bilateral with perispore.

A family of 26 genera, pantropical, 11 in Taiwan.

參考文獻

Cyclosorus 毛蕨屬

作者

TSAI, JINN-LAI and SHIEH, WANG-CHUENG

型態特徵

Terrestrial ferns; rhizomes creeping, scaly. Fronds pinnate-bipinnatifid, hairy on both surface, at least on the costae above; lowest veins of adjacent groups uniting to form an excurrent vein which joins the translucent membrane closing the base of sinus; reduced pinnae sometimes present on the stipes; the aerating tissue at the base of each pinna sometimes forming a prominent outgrowth or aerophore. Sori dorsal on the veins, small, round; indusia reniform; sporangia often with glands or setiform hairs.

參考文獻

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