Glabrous Paspalum distichum, pubescent var. indutum, and pubescent plants of P. distichum from the western United States were compared. No morphological differences other than pubescence exist between the three forms. Plants from the eastern United States are generally more glabrous than those from western regions. The var. indutum represents an extreme pubescent form and is reduced to synonymy under P. distichum.
Allred, Kelly Wayne
"Paspalum distichum L. var. indutum Shinners (Poaceae),"
Great Basin Naturalist: Vol. 42
, Article 13.
Available at: http://scholarsarchive.byu.edu/gbn/vol42/iss1/13