|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
Perennial from rhizome (above ground stem annual or perennial herb)
Stem generally erect, ridged lengthwise, hollow except at nodes, sometimes of 2 kinds (sterile, fertile); branches 0 or whorled and alternate leaves, sometimes solid
Leaves scale-like, whorled, fused into nodal sheath with as many teeth as leaves, generally not green
Sporangia several on inner surface of peltate scales that are clustered into a terminal cone; spores of 1 kind per sp., spheric, green, unmarked, with 4 strap-like appendages
Genera in family: 1 genus, 15 species: worldwide except Australia, New Zealand
Reference: [Hauke 1978 Nova Hedwigia 30:385455]
Etymology: (Latin: horse, bristle, from roots of E. fluviatile L.)
See the CNPS Inventory for information about endangerment and rarity.
Stem annual, of 1 kind, 2080 cm, green; basal internode of branch < subtending sheath; sheath 49 mm, longer than wide, teeth 510, 25 mm, separate; branch with 46 rounded ridges, hollow
Elevation: < 1000 m.
Bioregional distribution: Central Coast (San Francisco)
Distribution outside California: Oregon to Alaska, e N.America
Reported from Lake, San Mateo cos.; scarcity poorly understood; hybrid with E. telmateia subsp. braunii known from San Mateo Co.