|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Rhizome-scale cells with adjacent walls dark brown to blackish, external clear
Leaf: petiole in transverse section with 1 X-shaped or 2 back-to-back C-shaped vascular strands; segment veins generally free
Sporangia in linear to oblong sori along veins; indusia linear, opening away from veins; stalk cells in 1 row; spores elliptic, winged
Genera in family: ± 10 genera (limits disputed), 650 species (most in Asplenium): worldwide, especially tropical.
Plants in soil or on rocks; rhizome generally short-creeping to erect
Leaves often tufted, generally glabrous; 1° axis often ± winged; blade simple or 1many-pinnate, rarely forked; 1° leaflets often asymmetric, upward side more developed
Sporangia in linear sori; indusia persistent, covering sori when young, later reflexed
Etymology: (Greek: spleen)
See the CNPS Inventory for information about endangerment and rarity.
Leaves 1-pinnate, generally few, clustered, 320 cm; petiole 25 cm, 0.51 mm wide, unwinged, red-brown at base, greenish or straw-colored above, dull; blade generally 812 mm wide, linear; 1° leaflets 815 pairs, 37 mm, 36 mm wide, ± diamond-shaped, generally shallowly crenate on upper, outer margins
Sporangia: sori generally 11.5 mm, generally 13 pairs per 1° leaflet
Ecology: On rocks in limestone seams in metamorphic rocks
Elevation: 2050 m.
Bioregional distribution: n High Sierra Nevada (Sierra Co., eastern side of Sierra Buttes)
Distribution outside California: to Alaska, eastern N.America, Europe, Asia
Synonyms: A. viride Huds