Key to Dryopteris
View taxon page for Dryopteris
(For a list of species in Dryopteris, use the above link.)
Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.
1' Leaf 1–2-pinnate, proximal pinnae <= others, sides ± equal
2. Stipe generally > 1/3
leaf 
Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
length; longest pinnae generally near
blade 
Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.
base;
veins into
segment teeth, adaxially obscure;
scales of
pinna 
In ferns, primary division of a compound or dissected frond blade.
midribs lance-ovate to
lanceolate 
Narrowly elongate, widest in the basal half, often tapered to an acute tip.
; blade, indusial
glands sparse to ±
dense;
blades thick; NW, SN, ScV, CW, SW, MP, s DMoj
..... D. arguta 2' Stipe generally <= 1/3 leaf length; longest pinnae generally near blade middle; veins generally not into segment teeth, adaxially ± widened, prominent at tip; scales of pinna midribs hair-like,
linear 
Elongate, with nearly parallel sides; narrower than elliptic or oblong.
; blade, indusial glands generally 0 or very sparse; blades thin; SnBr, W&I
..... D. filix-mas
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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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