Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon 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 |
Previous taxon

THELYPTERIDACEAE THELYPTERIS FAMILY

John C. Game, Alan R. Smith & Thomas Lemieux

Plants generally in soil; rhizome short- to long-creeping, prostrate to erect, [trunk-like], scales generally hairy, ± brown. Leaf: stipe ×-section at base with 2 crescent-shaped vascular strands fusing into 1 U-shaped strand distally; blade 1[2]-pinnate, generally with needle-like, clear hairs on axes and/or between veins; rachis, costae generally grooved adaxially except between axes; veins free or in regular, net-like pattern. Sporangia: sori on veins, generally round; indusia reniform or round-reniform [0]; stalk cells in 3 rows; spores generally elliptic, scar generally linear.
1 genus (5–32 genera), ± 1000 species: worldwide, especially tropics; several cultivated. —Scientific Editors: Alan R. Smith, Thomas J. Rosatti.

THELYPTERIS
Leaf: pinnae entire to generally deeply lobed, veins generally not forked. (Greek: female fern; ancient name for delicate fern) [Smith & Cranfill 2002 Amer Fern J 92:131–149]
Unabridged references: [Smith 1971 Univ Calif Publ Bot 59:1–143; Smith, A. R. 1990. Thelypteridaceae. Pp. 263–272 in The families and genera of vascular plants, ed. K. Kubitzki. Vol. 1. Pteridophytes and gymnosperms, ed. K. Kramer & P. Green. Berlin: Springer-Verlag]

Key to Thelypteris

T. nevadensis (Baker) C.V. Morton NEVADA MARSH FERN
NATIVE
Rhizome creeping, 1.5–3 mm wide; generally dormant in winter. Leaf: densely clustered, generally 40–100 cm, 8–15 cm wide; stipe scales ovate, tan, persistent; blade thin, abaxially with many short-stalked or sessile, resinous glands between and on veins, nonglandular hairs sparse on axes, veins, 0 between veins; pinnae deeply lobed, lobes ± oblong, entire to shallowly crenate. Sporangia: sori small, round; indusia hairs 0 or sparse.
Springy hillsides, seepage areas; 365–1700 m. Klamath Ranges, Outer North Coast Ranges, n High Sierra Nevada; to British Columbia, Idaho. Locally forming large colonies. Differs from Athyrium filix-femina in having longer, thinner rhizome, thinner leaves, more numerous reduced proximal pinnae, more entire lobes, rounder sori. [Online Interchange]

Previous taxon: Thelypteris
Next taxon: Thelypteris puberula var. sonorensis

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 20 2014
Citation for this treatment: [Author of taxon treatment] 2013. Thelypteris, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=46421, accessed on Oct 20 2014

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.


Geographic subdivisions indicated for the distribution of Thelypteris nevadensis 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
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.