Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Alan R. Smith and Thomas Lemieux

Plants in soil; rhizome short- to long-creeping, scales generally hairy, uniformly brownish
Leaf: petiole in transverse section at base with 2 crescent-shaped vascular strands; blade generally with needle-like, clear hairs on axes or between veins; 1° and 2° axes generally grooved on upper surface, grooves not continuous from one axis to next; veins free or lowest pair running together at or near deepest part of sinus
Sporangia in generally round sori on veins; indusia reniform or round-reniform; stalk cells in 3 rows; spores elliptic, scar linear
Genera in family: 1–30 genera (depending on interpretation), ± 900 species: worldwide, especially tropical; several cultivated.


Leaf: blade 1–2-pinnate; 1° leaflets pinnately lobed
Reference: [Smith 1971 Univ Calif Publ Bot 59:1–143]


T. nevadensis (Baker) C.V. Morton

Rhizome creeping, 1.5–3 mm wide
Leaves 0 for several cm, then densely clustered, generally 40–100 cm, 8–15 cm wide; petiole scales ovate, tan, persistent; blade thin, lower surface with many short-stalked or sessile, resinous glands between and on veins, with non-glandular hairs sparse on axes and veins, 0 between veins
Sporangia: indusia glabrous or sparsely hairy
Ecology: Springy hillsides, seepage areas
Elevation: 800–1700 m.
Bioregional distribution: Klamath Ranges, Outer North Coast Ranges, n High Sierra Nevada
Distribution outside California: to British Columbia
Synonyms: Lastrea oregana (C. Chr.) Copel
Locally forming large colonies
Horticultural information: IRR or WET, DRN: 4, 5, 6, 17 &SHD: 3, 7, 14, 15, 16; GRCVR(deciduous).

previous taxon | next taxon
bioregional map for THELYPTERIS%20nevadensis being generated

Retrieve Jepson Interchange Index to Plant Names entry for Thelypteris nevadensis
Retrieve dichotomous key for Thelypteris
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California