|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 in soil or rock crevices; rhizome generally short-creeping, ascending, or erect, scales small to large, generally tan to brown, generally uniformly colored. Leaf: generally tufted or short-spaced, 5–200+ cm, generally ± alike; stipe firm or fleshy (easily crushed), base darker or not, with 2 vascular strands; blade generally 1–3-pinnate, ± glabrous or with hairs, hair-like scales, or gland-tipped hairs on axes, veins generally free (or netted); rachis, costa generally grooved adaxially. Sporangia: sori round, oblong, J-shaped, or linear along veins; indusia 0 or oblong, J-shaped, reniform, or linear, or of many segmented hair- or scale-like fragments or lobes encircling sorus from below; spores elliptic, winged, ridged, or spiny, scar linear.
± 15 genera, 700 species: worldwide, especially tropics, wooded areas, but some genera (e.g., Cystopteris, Woodsia) generally temperate. See note, reference (Smith et al. 2006 Taxon 55:705–731) under Dryopteridaceae for removal of genera from that family to this. —Scientific Editor: Thomas J. Rosatti.
Key to Woodsiaceae
Rhizome short-creeping to suberect, stout. Leaf: stipe stout, fleshy, easily crushed, straw-colored except base generally blackened, base scaly, ×-section with 2 crescent-shaped vascular strands; blade generally >= 2-pinnate, pinnae of equal sides, ± glabrous or minutely hairy, veins free. Sporangia: sori ± round, ± oblong, or J-shaped; indusia 0, oblong, J-shaped, or reniform, laterally attached.Key to Athyrium
± 100 species: generally northern temperate, especially eastern Asia. (Greek: doorless, from enclosed sori)
Leaf: blade narrow-elliptic or lanceolate, 2–3-pinnate, lower 1 or 2 pinna pairs generally ± < those above, ultimate segments shallowly to deeply pinnately lobed, midribs below glabrous or with scattered scales.
2n=80. Moist or wet rock crevices, talus, cliffs, boulder bases, streamsides; 1700–3700 m. Klamath Ranges, High Cascade Range, High Sierra Nevada, Warner Mountains, White and Inyo Mountains; to Alaska, western Canada, Montana, Colorado; also eastern Can, Greenland, eastern Asia. [Athyrium alpestre Milde var. americanum Butters, illeg.] Athyrium distentifolium var. distentifolium in Eurasia. [Online Interchange]
Previous taxon: Athyrium
Next taxon: Athyrium filix-femina var. cyclosorum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 7 2014
Citation for this treatment: [Author of taxon treatment] 2012. Athyrium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=54985, accessed on Mar 7 2014
Copyright © 2013 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.
|Bioregions in which Athyrium distentifolium var. americanum occurs|| 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
CCH collections by month