Axonopus fissifolius

common carpetgrass, carpetgrass, louisiana grass, mat grass, narrowleaved carpetgrass
Family

Poaceae

Leaf Arrangement

alternate

Leaf Type

simple

Growth Form

graminoid

Flower Color

inconspicuous

Flower Month

May - November

Height (meters)

0.3 - 0.6

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

native

Lifespan

perennial

Growing Season

Warm season


Wetland Class

FACW

Wetland Coefficient of Conservatism

2

Prairie Coefficient of Conservatism

0

Field Characters

Axonopus fissifolius has hairy spikelets, 1/4" wide leaves and no still hairs on leaf margins. 2-4 racemes with very small spikelets alternating in 2 rows. Spikelets hairy, 1.7-2.2 mm long and apically blunt. Stems flattened. Leaf blades rounded on the tips. Ligule short still hairs. (Look-alikes – A. furcatus -smooth spikelets, larger than A. fissifolius(4.5-6 mm long, and apically pointed) and A. compressus – spikelets hairy at base, 1.7-3 mm long and apically pointed with point extended). Other grasses with a Y-shaped inflorescence: Paspalum conjugatum, P. notatum, P. distichum, P. vaginatum.

Cultural Information

Commercial seed has a purity of 92 percent and a germination rate of 90 percent. There are 1,222,000 seed per pound and the recommended planting rate is 5-12 lbs/acre.

Animal Use

Desirable to cattle and where common it makes fair forage. Poor wildlife value.

Natural History

Under favorable conditions it spreads rapidly by stolons, developing a dens sod. It prefers moist, medium to fine-textured soil. On dry sandy soils it occurs sparingly, growing in shallow depressions or in intensely grazed areas. It cannot compete with taller grasses and is an increaser under grazing (Grelen and Hughes 1984). It is nutritious and palatable to livestock throughout the growing season. The origin of Axonopus fissifolius is not clear with some authors claiming that the species is indigenous to Europe while others believe it to be native to North America.

Habitat

Lawns, pastures, disturbed ground.