Arthraxon hispidus/NJ

Taxonomy

Domain	Eukarya
Kingdom	Plantae
Phylum	Magnoliophyta
Class	Magnoliopsida
Superorder	Lilianae
Order	Poales
Family	Poaceae
Subfamily	Panicoideae
Tribe	Andropogoneae
Genus	Arthraxon

Scientific Name

Arthraxon hispidus

Scientific Name Synonyms

Phalaris hispida

Arthraxon hispidus cryptatherus

Arthraxon ciliaris cryptatherus

Common Name

small carpetgrass, joint-head grass

Common Name: small carpgrass, hairy jointgrass jointhead arthraxon, small carpetgrass
Family Name: Poaceae - True grass family
Native Range: Japan and eastern Asia
NJ Status: Widespread and highly threatening to native communities.

General Description

• Annual grass found in wet areas
• Grows to 1.5’ tall

Leaves

• Leaves are 1 - 3” long, 1/5” (0.5 cm) wide; have heart-shaped bases.
• The margins of the leaves have conspicuous hairs

Flowers

• Flowers bloom in early fall and are contained in 1 to several, 1 - 3” long spikes
• Fairly tight spiked arrangement of flowers

Fruit

• The seeds are slender and yellowish in color, measuring 0.2” long

Habitat

• Sunny and moist
• Edge, Floodplain Forest, Lake or Pond, Open Disturbed Area, Pasture, River or Stream, Wet Meadow

Commercially Available

No

Look-alikes

deertongue grass (Dicanthelium clandestinum)

• Arrangement of flowers is pyramid shaped
• Slightly larger, covered with stiff hairs, and its leaves are generally longer and pointy in shape.
• Usually be found in drier sites

Japanese stiltgrass (Microstegium vimineum)

• Leaves do not have a heart-shaped base.

Control Recommendations - treat before fruit/seed maturation

Foliar Spray: FS-2

• Glyphosate 3.00%
• Please see our Herbicide Use Suggestions and Mixing Guide for more information.

Foliar Spray: FS-8

• Quizalofop 0.38%
• Please see our Herbicide Use Suggestions and Mixing Guide for more information.

Pre-Emergent Spray: PE-1

• Prodiamine - See Label Instructions

List of Resources

USDA PLANTS
IPANE
eXtension Invasive Species CoP
The University of Tennessee: Hortweeds