Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Tall Beaked-rush
Rhynchospora macrostachya
Family: Cyperaceae

Protection Status:
State Status:  E
USFWS Status: {null}

Global Rank: G4
State Rank: S1

Marshes, swamps, upland depression ponds, other wetlands (Weakley 1998).. in KY, mud at edge of sinkhole pond.

Species Description:
Perennial herb.

Flowering Period: Early July to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
The achene of this beak-rush has a long cap (tubercle) at the summit that is 16-22mm. It usually has 6 bristles that are about equal (there are 5 unequal ones in R.corniculata). It is found in swamps.

Avoid changes in moisture/hydrologic conditions at the site. Changes could result from overstory removal, stream/wetland alteration or vegetation removal that would result in increased erosion.

Global Range:

Known Kentucky Occurrences:

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Data last updated: Wednesday, May 28, 2014
Kentucky State Nature Preserves Commission
801 Teton Trail
Frankfort,KY 40601
Phone: (502) 573-2886
Fax: (502) 573-2355
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