Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Porter's Reedgrass
Calamagrostis porteri ssp. porteri
Family: Poaceae

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

Global Rank: G4T4
State Rank: S2S3

Dry rocky woods on mountain summits.

Species Description:
Perennial grass.

Flowering Period: Early July to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
Culms are slender with a loosely ascending dense inflorescence. The leaf sheaths are glabrous except at the collar (where the blade forms) which is densely hairy. The most distinguishing character for this taxa is the awned lemna with a tuft of long hairs at the base. The rachilla (the stalk of the spikelet) bristle-like and extending behing the palea.

May tolerate some timber removal if done without excessive soil disturbance (discing/chopping) and if immediate vicinity of plant is protected from debris and direct cutting etc. Disturbance of surrounding slopes such as ATV trails or timber removal or any activity that results in increased erosion will be detrimental. Exotic pest plants are a threat to this species.

Global Range:
Sporadic distribution. Local populations from Chemung Co., NY to Jackson Co., Ohio; south of the glacial boundary through the Appalachian Mountains to Virginia, West Virginia, Kentucky, and Tennessee.

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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