OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Coleataenia rigidula ssp. rigidula   FAMILY Poaceae   Go to FSUS key



INCLUDED WITHIN PLANTS NATIONAL DATABASE:
Panicum rigidulum var. rigidulum   FAMILY Poaceae

SYNONYMOUS WITH Vascular flora of Illinois (Mohlenbrock, 2014)

Coleataenia rigidula

INCLUDED WITHIN Flora of North America north of Mexico, vol. 25 (2003)

Panicum rigidulum ssp. rigidulum

SYNONYMOUS WITH Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)

Panicum rigidulum var. rigidulum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-81-004a:

Panicum agrostoides var. agrostoides   FAMILY Poaceae

INCLUDING Manual of the Grasses of the US (Hitchcock & Chase, 1950)

Panicum agrostoides var. agrostoides

INCLUDING Manual of the Grasses of the US (Hitchcock & Chase, 1950)

Panicum agrostoides var. ramosius

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Panicum agrostoides

 

COMMON NAME:
Redtop Panicgrass


         To see larger pictures, click or hover over the thumbnails.

image of Coleataenia rigidula ssp. rigidula, Redtop Panicgrass

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_paag_001_lvd

        

image of Coleataenia rigidula ssp. rigidula, Redtop Panicgrass

USDA-NRCS PLANTS Database / Hitchcock, A.S. (rev. A. Chase). 1950    pnd_paag_002_lhd

        

image of Coleataenia rigidula ssp. rigidula, Redtop Panicgrass

Gill Newberry    gn09_p_agrostoides_flower

September        

Spikelets greeinish-purple, attached on 1 side of the panicle branches, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).

image of Coleataenia rigidula ssp. rigidula, Redtop Panicgrass

Gill Newberry    gn09_p_agrostoides_habit

September        

Leaf blades erect, folded at base, flat above, 20-50cm long, 5-12mm wide, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).

image of Coleataenia rigidula ssp. rigidula, Redtop Panicgrass

Gill Newberry    gn09_p_agrostoides_inf

September        

Inflorescence a narrow, pyramidal panicle, 4-12" tall, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Coleataenia rigidula ssp. rigidula   FAMILY Poaceae

INCLUDED WITHIN PLANTS NATIONAL DATABASE:
Panicum rigidulum var. rigidulum   FAMILY Poaceae

SYNONYMOUS WITH Vascular flora of Illinois (Mohlenbrock, 2014)
Coleataenia rigidula

INCLUDED WITHIN Flora of North America north of Mexico, vol. 25
Panicum rigidulum ssp. rigidulum

SYNONYMOUS WITH Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Panicum rigidulum var. rigidulum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-81-004a:
Panicum agrostoides var. agrostoides   FAMILY Poaceae

INCLUDING Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum agrostoides var. agrostoides

INCLUDING Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum agrostoides var. ramosius

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Panicum agrostoides

 

Find by SCIENTIFIC NAME:

3545

Grass, Sedge, or Rush
Perennial

Habitat: Wet sandy or peaty soils low woods, meadows, marshes, shores, swamps, ditches, often weedy, per Weakley's Flora

Native to the Carolinas & Georgia

Common (uncommon in GA Mountains, rare in Carolina Mountains)

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Basal & alternate, 2-ranked

RHIZOMES? STOLONS?
Cespitose [growing in dense tufts, clumping], not rhizomatous

FLOWER:
Summer/Fall
Spikelets greenish-purple

Inflorescence an open panicle

FRUIT:
Summer/Fall
Grain purplish to blackish
Grain

 

TO LEARN MORE about this plant, look it up in a good book!



 


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