Arlington Fairfax Chapter

of the

Izaak Walton League of America

Ferns

Sensitive Fern

Onoclea sensibilis

Noted only in the swampy area at the southern edge of the pond.

Deciduous fern, fronds will die at the slightest frost, hence the name Sensitive Fern. Height of 1 1/2 to 3 1/2 feet. Grows in moist to wet soils with at least part shade.

Broad Beech Fern

Phegopteris hexagonoptera

Found primarily within the main stream valley that feeds the pond

Deciduous fern which grows in part shade and moderately acid soils often under hardwood trees. Height to 24 inches.

Christmas Fern

Polystichum acrostichoides

Found throughout the woods on the property.

The Christmas Fern is an evergreen fern which more tolerant of dry soil than most other ferns. Height 18 to 24 inches

Ebony Spleenwort Fern

Asplenium platyneuron

Ebony Spleenwort - interface of woods and powerline right of way - numerous plants near fire road gate. May be encountered throughout the woods.

Maidenhair Fern

Adiantum pedatum

The largest concentration of this species will be found within the main stream valley that feeds the pond.

Cutleaf Grape Fern

Botrychium dissectum obliquum

Appears to be confined to a small area of the stream valley near the gas pipleline right of way.

Grows only a single frond

Rattlesnake Fern

Botrychium virginianum

Found here and there within the upland woods of the Chapter's Property.

Moist to dry soil in part to full shade. Up to 1 1/2 feet high.

Marginal Shield Fern

Dryopteris marginalis

Found along Cub Run in acidic shale containing soil.

Grows to 1 1/2 feet in part to full shade in moist soil.

Ostrich Fern

Matteuccia Struthiopteris

Uncommon found in main stream valley that feeds the pond.

Grows to between two to six feet in height. Named for its fertile frond which looks very much like an ostrich plume

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