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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.

1 Sori exindusiate.   1 Gymnocarpium
+ Sori indusiate   (2)
2 (1) Multicellular articulate hairs present on stipe and lamina; indusia small, often hidden under sporangia.   3 Acystopteris
+ Multicellular articulate hairs absent from stipe and lamina; indusia visible   (3)
3 (2) Lamina deltoid to lanceolate, base slightly narrowed or broadest part of lamina; spore wall echinate.   4 Cystopteris
+ Lamina oblong-lanceolate, base gradually narrowed, spore wall with conical spines.   2 Cystoathyrium

Lower Taxa


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