Phytologia (Aug 2004) 86(2) 1 07 



PRENANTHES BARBATA (ASTERACEAE) AND 

 PARENTUCELLIA VISCOSA (SCROPHULARIACEAE) NEW TO 



OKLAHOMA 



Jason R. Singhurst 



Wildlife Diversity Program, Texas Parks and Wildlife Department, 



Austin, Texas 78704 U.S.A. 



Jason.Singhurst@tpwd.state.tx.us 



Walter C. Holmes 



Department of Biology, Baylor University 



Waco, Texas 76798-7388 U.S.A. 



Walter_Holmes@Baylor.edu 



ABSTRACT 



Prenanthes barbata and Parentucellia viscosa are reported as new 

 to the flora of Oklahoma. 



KEYWORDS: Prenanthes, Parentucellia,Asteraceae, Scrophulariaceae, 

 Oklahoma. 



The following taxa are not reported from Oklahoma by Taylor and 

 Taylor (1994) or the PLANTS database (USCS, USDA. 2004), thus are 

 considered as new to the state. All locations cited are in the West Gulf 

 Coast Plain vegetational region (Taylor and Taylor 1994). 



Prenanthes barbata (Torr. & A. Gray) M. L. Milstead ex A. Cronquist 

 (Asteraceae). Four populations of P. barbata were located on a stream 

 terrace along Mt. Fork Creek below Beaver Bend Lake and Mt. Fork 

 River within Beaver Bend State Park in Mc Curtain County. The Mt. 

 Fork Creek plants consisted of two populations, one with about 25 

 flowering individuals and another with about 15 flowering individuals. 

 Two Mt. Fork River populations consisted of about ten flowering 

 individuals at one site and five flowering individuals at the other 



