Western Wetland Flora
Field Office Guide to Plant Species
Botrychium lunaria (L.) Swartz
- Family: Adder's-tongue (Ophioglossaceae)
- Spores: May-June
- Field Marks: This fern is readily recognized by its simple, reniform (moon-shaped) leaf segments.
- Habitat: Wet meadows, moist fields.
- Habit: Perennial fern with an erect rhizome.
- Stems: Upright, rather stout, up to 1 foot tall, smooth; buds not hairy.
- Leaves: Sterile blade borne halfway up the stem, up to 5 inches long, divided into 10-16 reniform (moon-shaped) leaflets, the leaflets shallowly toothed or lobed, smooth.
- Sori: Spherical, borne in a narrow spike up to 4 inches long.
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