GALIUM TRICORNUTUM (RUBIACEAE) AND PARENTUCELLIA VISCOSA (SCROPHULARIACEAE) NEW TO OKLAHOMA

摘要

This paper reports the occurrence of two species previously unknown to the flora of Oklahoma. Gaiium tricornutum a Eurasian introduction, was discovered in a cement drainage ditch in Hughes County in central Oklahoma. Parentucellia viscosa, an introduction from Europe, was discovered in disturbed grassland in McCurtain County in extreme southeastern Oklahoma.