OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA (4/24/22):
Paspalum dilatatum ssp. dilatatum   FAMILY Poaceae   NEW! Click to go to FSUS key


INCLUDED WITHIN PLANTS NATIONAL DATABASE:
Paspalum dilatatum   FAMILY Poaceae

INCLUDED WITHIN Flora of North America
Paspalum dilatatum

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-74-006:
Paspalum dilatatum   FAMILY Poaceae

INCLUDED WITHIN Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum dilatatum

INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Paspalum dilatatum

 

COMMON NAME:
Dallis-grass


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

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_padi3_001_lvd

        

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

USDA-NRCS PLANTS Database / Hitchcock, A.S. (rev. A. Chase). 1950    pnd_padi3_002_lvd

        

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide    pnd_padi3_005_lvd

        

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Gill Newberry    gn04_paspalum_diatatum

April        

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9309_pdilatatum01

August    Spartanburg County    SC

Terminal racemes with 3-7 alternate spreading branches, spikelets 4-rowed, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9317_purvilleivsdilata

August    Spartanburg County    SC

Culms of P. urvillei (left) 1-2m tall, vs. P. dilatatum (right) 0.6-1.2m tall, per Vascular Flora of the Carolinas.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9319_pdilatatum02

August    Spartanburg County    SC

Sheaths sparsely hairy near base of plant and hairless above, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9331_pdilatatum03

August    Spartanburg County    SC

Ligule membrane 2-3mm long, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9338_pdilatatumvsurvel

August    Spartanburg County    SC

Ligules of P. dilatatum (on left) vs. P. urvillei (on right).

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9356_pdilatatumbloom

August    Spartanburg County    SC

Spikelets ovate, acuminate, 3-4mm [anthers & feathery stigmas protruding], per Vascular Flora of the Carolinas.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Glen Peterson    gkp9381_pdilatatumvsurvel

August    Spartanburg County    SC

P. dilatatum on the left, P. urvillei on the right.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Gill Newberry    gn09_p_diatatum_closeup2

September        

Spikelets have long silky hairs like P. urvillei, but are larger (3-3.5mm), per Wildflowers of the Eastern United States.

image of Paspalum dilatatum ssp. dilatatum, Dallis-grass

Gill Newberry    gn09_p_diatatum_habitat

September        

 

WEAKLEY'S FLORA (4/24/22):
Paspalum dilatatum ssp. dilatatum   FAMILY Poaceae

INCLUDED WITHIN PLANTS NATIONAL DATABASE:
Paspalum dilatatum   FAMILY Poaceae

INCLUDED WITHIN Flora of North America
Paspalum dilatatum

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-74-006:
Paspalum dilatatum   FAMILY Poaceae

INCLUDED WITHIN Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum dilatatum

INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Paspalum dilatatum

 

Find by SCIENTIFIC NAME:

2251

Grass, Sedge, or Rush
Perennial

Non-native: tropical America

Common

Habitat: Roadsides, fields, disturbed areas, per Weakley's Flora

map
NEW! Click here to see a map from Weakley's Flora of the Southeastern US showing range and abundance.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)


Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

 

LEAVES:
Simple
Mostly basal & low alternate, 2-ranked

RHIZOMES? STOLONS?
Cespitose [growing in dense tufts, clumping], rhizomatous

FLOWER:
Spring/Summer/Fall

Inflorescence a panicle of 3-7 ascending racemose branches

FRUIT:
Spring/Summer/Fall
Grain grayish
Grain

 

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



 


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