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NC Native Plant Society:
Plant Details

Equisetum hyemale ssp. affine [= Equisetum hyemale var. affine]

Tall Scouring-rush, River Scouring-rush

Scientific Name:

Equisetum hyemale ssp. affine [= Equisetum hyemale var. affine]

Genus:

Equisetum

Species Epithet:

hyemale

Common Name:

Tall Scouring-rush, River Scouring-rush

Plant Type

Fern/Clubmoss/Allies

Life Cycle

Perennial

Plant Family

Equisetaceae (Horsetail Family)

Native/Alien:

NC Native

Invasive Status:

(*Key)

Size:

1-3 ft., 3-6 ft.

Bloom Color(s):

Brown

Light:

Sun - 6 or more hours of sun per day, Part Shade - 2 to 6 hours of sun per day, Less than 2 hours of sun per day

Soil Moisture:

Moist, Wet

Bloom Time:

May, June, July, August, September

Growing Area:

Mountains, Piedmont, Coastal Plain

Habitat Description:

Riverbanks, alluvial floodplains. Uncommon in NC mountains and piedmont, rare in coastal plain.

Leaf Arrangement:

No apparent leaves

Leaf Retention:

Evergreen

Leaf Type:

Nothing Specified

Leaf Form:

No Apparent Leaves

Life Cycle:

Perennial

Wildlife Value:

Has some wildlife value

Landscape Value:

Not Recommended for home landscapes

State Rank:

S4: Apparently secure (*Key)

Global Rank:

G5 - Secure (*Key)

Notes:

Can form large colonies. Stems contain silica; the plants have been used to polish wood and metals such as pewter.

Emerging stem. Notice the “leaves” which are reduced to a sheath that surrounds the stem.

Garden in Orange County, NC

Bettina Darveaux

Plant with hollow, jointed, vertically ridged stems

Garden in Orange County, NC

Bettina Darveaux

Reproductive spores are produced in sporangia hanging from the underside of the expanded tips of tiny lateral branches which are aggregated into a cone-like strobilus at the tip of the stem.

Garden in Orange County, NC

Bettina Darveaux

Links:

USDA PLANTS Database Record

https://auth1.dpr.ncparks.gov/flora/species_account.php

https://nc.audubon.org/700

https://gobotany.nativeplanttrust.org/species/equisetum/hyemale/

https://plants.ces.ncsu.edu/plants/equisetum-hyemale/



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