| TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
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 30:385–455]
Etymology: (Latin: horse, bristle, from roots of E. fluviatile L.)
| Native |
Stem annual, of 1 kind, 20–80 cm, green; basal internode of branch < subtending sheath; sheath 4–9 mm, longer than wide, teeth 5–10, 2–5 mm, separate; branch with 4–6 rounded ridges, hollow
Ecology: Marshes
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.