Directory       News       Site Map       Home
    Jepson eFlora
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 generally in soil; rhizome erect or short- to long-creeping, scaly or hairy. Leaf: generally alike, 1–4-pinnate, erect-arched; stipe, axes grooved adaxially, grooves from rachis to costa connected; pinnules on basal side of lowermost pinnae more developed (except Pteris vittata). Sporangia: among hair-like structures in continuous, marginal bands; false indusia along segment margins except at bases, tips, and between lobes, partly covering sporangia, scarious.
± 250–300 species: generally tropics, subtropics. (Greek: feather, for pinnae, or ancient name for ferns in general) Popular in cultivation.

Key to Pteris

1. Leaf 2–4-pinnate ..... [P. tremula]

1' Leaf 1-pinnate, proximal pinnae minutely serrate or with 2(3) deep lobes that ± resemble pinnules

2. Proximal pinnae > others, with 1(3) deep lobes; stipe, rachis ± glabrous except base ..... P. cretica

2' Proximal pinnae < others, minutely serrate; stipe, rachis ± scaly ..... P. vittata


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.