Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Polypodium

View taxon page for Polypodium

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

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

1. Leaf  midrib adaxially glabrous, blade ± membranous to leathery, not fleshy

2. Leaf segment generally < 2.5 cm, generally < 1 cm wide;  blade ± membranous to ± thick, not leathery, ± firm, not brittle; sori 1–2.5 mm ..... P. hesperium

2' Leaf segment 2.5–7(10) cm, 0.9–1.8(2.5) cm wide; leaf blade thick, leathery, firm, brittle; sori 2–6 mm ..... P. scouleri

1' Leaf blade midrib adaxially hairy, if glabrous, blade membranous to fleshy, not leathery, often firm

3. Veins free; sori generally round ..... P. glycyrrhiza

3' Veins free and fused; sori round to generally  or 

4. Leaf blade  to ovate, often ± irregular in outline, lower 1–3 segment pairs often >= those above; sori generally ± sunken, round to generally ovate; CCo, SCoRO, SW ..... P. californicum

4' Leaf blade oblong-ovate, ± regular in outline, lower 1–3 segment pairs generally < those above; sori not sunken, ovate to oblong; NW (except NCoRH), CaRF, SN (except s SNF), GV (rare), CW ..... P. calirhiza


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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, [accessed on ]

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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