BugwoodWiki Article

small carpetgrass, joint-head grass
Arthraxon hispidus (Thunb.) Makino


The plant stands to 1.5 ft. (0.5 m) tall with oval to lance-shaped leaves.
Leaves are 1-3 in. (2.5-7.6 cm) long, 0.2 in. (0.5 cm) wide and have heart shaped bases. The margins of the leaves have conspicuous hairs.
Flowers bloom in early fall and are contained in 1 to several, 1-3 in. (2.5-7.6 cm) long spikes.
Fruit is a caryopsis.
Ecological Threat
Arthraxon hispidus is an annual grass that was introduced into the United States, either accidentally or by immigrants, from Japan and eastern Asia. Arthraxon hispidus inhabits wet areas such as stream banks, flood plains and shorelines.


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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org

State Invasives List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae
Genus: Arthraxon

Other System Links

Plants: ARHI3
Bayer: ARAHI
GRIN: 4302
ITIS: 41445
NPDN Host: 36785

Synonyms and Other Names

Other Common Names:
jointhead arthraxon, hairy jointgrass

Related Scientific Names:

Arthraxon ciliaris cryptatherus (Thunb.) Makino(Synonym)
Arthraxon hispidus cryptatherus (Thunb.) Makino(Synonym)
Phalaris hispida (Thunb.) Makino(Synonym)


Category: Grass or Grasslike