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 blade midrib adaxially glabrous, blade ± membranous to leathery, not fleshy

2. Leaf segment generally < 2.5 cm, generally < 1 cm wide; leaf 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 ovate or oblong

4. Leaf blade deltate to ovate, often ± irregular in outline, lower 1–3 segment pairs often >= those above; sori generally ± sunken, round to generally ovate; Central Coast, Outer South Coast Ranges, Southwestern California ..... P. californicum

4' Leaf blade oblong-ovate, ± regular in outline, lower 1–3 segment pairs generally < those above; sori not sunken, ovate to oblong; Northwestern California (except High North Coast Ranges), Cascade Range Foothills, Sierra Nevada (except s Sierra Nevada Foothills), Great Central Valley (rare), Central Western California ..... P. calirhiza


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