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23. Cystopteridaceae
冷蕨科 leng jue ke
Authors: Zhongren Wang, Christopher Haufler, Kathleen M. Pryer & Masahiro Kato
Plants small to medium-sized, summer-green; rhizomes slender, creeping or ascending; costae articulate to rachis (in Gymnocarpium) or not so; lamina pinnate to 3(or 4)-pinnate-pinnatifid; veins free; sori orbicular or elongate, abaxial on veins, indusiate or exindusiate; indusia ovate-lanceolate, ovate, or orbicular, attached proximally to receptacle. x = 40, 42.
Four genera and more than 30 species: worldwide, mainly in the temperate and cold temperate zones and tropical mountains; four genera (one endemic) and 20 species (ten endemic) in China.
Wang Zhong-ren. 1999. Acystopteris, Cystoathyrium, Cystopteris, and Gymnocarpium. In: Chu Wei-ming, ed., Fl. Reipubl. Popularis Sin. 3(2): 38-74.
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| 1 |
Sori exindusiate. |
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1 Gymnocarpium |
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Sori indusiate |
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(2) |
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| 2 (1) |
Multicellular articulate hairs present on stipe and lamina; indusia small, often hidden under sporangia. |
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3 Acystopteris |
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Multicellular articulate hairs absent from stipe and lamina; indusia visible |
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(3) |
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| 3 (2) |
Lamina deltoid to lanceolate, base slightly narrowed or broadest part of lamina; spore wall echinate. |
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4 Cystopteris |
| + |
Lamina oblong-lanceolate, base gradually narrowed, spore wall with conical spines. |
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2 Cystoathyrium |
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Lower Taxa
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