Summary Zoysia matrella line drawing. This image is not copyrighted and may be freely used for any purpose. Please credit the artist, original publication if applicable, and the USDA-NRCS PLANTS Database. The following format is suggested and will be appreciated: USDA-NRCS PLANTS Database / Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Misc. Publ. No. 200. Washington, DC. USDA, NRCS. 2006. The PLANTS Database (http://plants.usda.gov, 14 November 2006). National Plant Data Center, Baton Rouge, LA 70874-4490 USA Licensing[edit] Public domainPublic domainfalsefalse. : This image is a work of the Natural Resources Conservation Service, part of the United States Department of Agriculture, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States. : .