|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Perennial herb, on plants, rocks, in rock crevices, or in soil, humus, or on dunes; rhizome short- to long-creeping, branched, glaucous to not, scaly. Leaf: ± alike or of 2 kinds, fertile and sterile; stipe thin to thick, generally straw-colored or green to brown, base persistent on rhizome; blade generally simple to 1-pinnate, membranous to fleshy or leathery; veins free to generally fused, often netted. Sporangia: sori round to elongate (linear), generally 1 per areole, in 1–several rows on each side of segment midrib; indusium 0; spores elliptic, ± smooth to coarse-tubercled or -ridged, scar linear.
± 40 genera, ± 650 species: worldwide, especially tropics; many species cultivated. —Scientific Editor: Thomas J. Rosatti.
Rhizome long-creeping; scales lanceolate, generally ± brown, 1-colored or often with darker central area or midstripe. Leaf: 0.2–10(20) dm, ± alike or fertile > sterile; stipe glabrous to scaly; blade 1-pinnate to generally deeply pinnately lobed (or simple, unlobed), hairy to not, glandular or not, scales on abaxial midrib near base generally lanceolate or lance-linear, generally ± brown; veins free to fused. Sporangia: sori in 1 row on each side of segment midrib, generally raised, sometimes including sporangium-like structures, shriveled sporangia, or branched or unbranched glandular hairs; spores yellow.Key to Polypodium
± 40 species: generally New World, temperate, tropics, few boreal. (Latin: many feet, from persistent petiole bases) [Hildebrand et al. 2002 Amer Fern J 92:214–228] Identification complicated in California by fact that 2 or more co-occurring species often hybridize (often indicated by malformed spores), especially in Central Coast (especially Point Reyes), North Coast, where the sterile hybrids may outnumber the parental species, and because coastal ecotypes of several species often have thicker, more succulent blades than inland forms. Polypodium australe Fée except (dubiously reported from but not persisting on San Clemente Island).
Unabridged references: [Whitmore & Smith 1991 Madroño 38:233–248; Hildebrand et al. 2002 Amer Fern J 92:214–228]
Unabridged note: A specimen from San Clemente Island (Lloyd & Hohn 4420, UC) identified by several workers as Polypodium australe Fée, a European (Mediterranean) sp., lacks rhizome (rhizome important for identification) and definitive provenance (specimen from cultivated plant that is no longer extant so original locality data not fully trustworthy), and so is here excluded. Lloyd and Hohn (Amer Fern J 59:56–60. 1969) explained its presence as a chance introduction of spores carried on hides of European grazing animals. Apparently, it has not persisted on San Clemente Island, if in fact it ever occurred there at all.
Previous taxon: Polypodiaceae
Next taxon: Polypodium californicum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 6 2015
Citation for this treatment: [Author of taxon treatment] 2013. Polypodium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9796, accessed on Oct 6 2015
Copyright © 2014 Regents of the University of California
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.
| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
View elevation by latitude chart
| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records