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Key to families | Table of families and genera
Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Plant in soil or on rocks; rhizome generally short-creeping to erect. Leaf: often tufted, generally glabrous; rachis often ± winged; blade simple or 1[many]-pinnate or forked; pinnae often more developed acroscopically, often without obvious midrib. Sporangia: indusia persistent, covering sori when young, later reflexed. (Greek: spleen)
1. Leaves simple or 1–2-forked, blades narrowly linear ..... A. septentrionale
1' Leaves 1-pinnate, blades linear, pinnae many, blades wider than linear
2. Stipe ± green or straw-colored above red-brown base ..... A. viride
2' Stipe dark red- to purple-brown ± throughout
3. Stipe 0.4–0.6 mm wide, narrowly winged adaxially; pinnae 3–6(7) mm, generally shallowly crenate on acroscopic and distal margins ..... A. trichomanes subsp. trichomanes
3' Stipe generally 0.5–1 mm wide, unwinged; pinnae generally 5–12 mm, margin shallowly lobed or toothed ± throughout ..... A. vespertinum
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.