Cenchrus agrimonioides


Cenchrus agrimonioides is a rare species of grass in the family Poaceae that is endemic to the Hawaiian Islands. Its common names include Kāmanomano and agrimony sandbur. It was formerly distributed throughout the major islands but today it is nearly limited to Oʻahu. Kāmanomano inhabits dry to moist forests and lava plains. It is threatened by competition with non-native plants, predation by ungulates, and wildfire. When this plant became a federally listed endangered species of the United States in 1996 there were fewer than 100 individuals remaining.[3] More recent counts revealed 181 wild individuals on Oʻahu and over 300 more which have been planted to augment the populations.[3] This plant is nearly restricted to the island of Oʻahu, but there are a few individuals known on Maui.[3] A few patches of the grass have been planted on Kahoʻolawe, as well.[3]

Cenchrus agrimonioides
Starr 081230-0676 Cenchrus agrimonioides var. agrimonioides.jpg
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Panicoideae
Genus: Cenchrus
C. agrimonioides
Binomial name
Cenchrus agrimonioides
C. agrimonioides var. agrimonioides

Cenchrus agrimonioides var. laysanensis, a variety of this species endemic to the Northwestern Hawaiian Islands, became extinct in the 1980s.[4] Remaining plants of this species are the variety agrimonioides.[3]

This is a perennial grass which produces is flowers and fruits within spiny burs.[5] These burs attach to animals, which might then disperse the seeds.[3]


  1. ^ Keir, M.; Caraway, V.L.; Bruegmann, M. (2018). "Cenchrus agrimonioides". IUCN Red List of Threatened Species. 2018: e.T44153A78766712. doi:10.2305/IUCN.UK.2018-2.RLTS.T44153A78766712.en. Retrieved 12 November 2021.
  2. ^ "Cenchrus agrimonioides". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2011-03-06.
  3. ^ a b c d e f USFWS. Cenchrus agrimonioides Five Year Review. July 21, 2009.
  4. ^ Bruegmann, M.; Caraway, V.L.; Keir, M. (2018). "Cenchrus agrimonioides var. laysanensis". IUCN Red List of Threatened Species. 2018: e.T44151A78766888. doi:10.2305/IUCN.UK.2018-2.RLTS.T44151A78766888.en. Retrieved 12 November 2021.
  5. ^ The Nature Conservancy: Cenchrus agrimonioides

External linksEdit

  Media related to Cenchrus agrimonioides at Wikimedia Commons   Data related to Cenchrus agrimonioides at Wikispecies

  • USDA Plants Profile