|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Cystopteridaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Rhizome generally short-creeping. Leaf: stipe +- fleshy, often with few scales, base ×-section with 2 vascular strands; blade 2--4-pinnate, pinnae sides unequal, acroscopic pinnules more spreading, larger, more incised; veins free and extending to leaf margin. Sporangia: sori round; indusia hood-like, arched over sorus, attached on side away from margin, often obscure in mature sori.
Species In Genus: 26+ species: generally temperate, a few at high elevations in tropics. Etymology: (Greek: bladder fern, from indusia) Note: Often confused with Woodsia (pinnae sides equal; more fragmented indusia encircling sorus base; veins ending before leaf margin). Species limits, especially in the Cystopteris fragilis complex (sensu Rothfels et al. 2013 Syst Bot 38:295--306), obscured by hybridization and polyploidy (Rothfels et al. 2014 Taxon 63:1026--1036; Rothfels et al. 2016 New Phytol in press).
eFlora Treatment Author: Carl J. Rothfels & Alan R. Smith
Jepson Online Interchange
Previous taxon: Cystopteridaceae
Next taxon: Cystopteris fragilis
Citation for this treatment: Carl J. Rothfels & Alan R. Smith 2017. Cystopteris, in Jepson Flora Project (eds.) Jepson eFlora, Revision 4, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=10766, accessed on April 29, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 29, 2017.