Key to Asplenium

View taxon page for Asplenium

(For a list of species in Asplenium, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaves 

simple 

Composed of a single part; undivided; unbranched.

or 1–2-forked, blades narrowly 

linear 

Elongate, with nearly parallel sides; narrower than elliptic or oblong.

..... 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 

Pertaining to margins with shallow, rounded teeth, between which are usually acute sinuses (i.e., scalloped)

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

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Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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