Phytologia (Aug 2004) 86(2) 1 09 



and Texas) United States (USDA, NRCS. 2004). The species is rather 

 widespread in east Texas and is quite common in adjacent Bowie and 

 Red River counties (pers. observ.), bordering the Red River. The species 

 is conspicuous because of its bright yellow flowers that have earned it 

 the common name Yellow Glandweed. This species typically occurs 

 in mesic roadsides in association with Vicia spp., Rumex spp., Lolium 

 perenne, Casteleja spp., Eleocharis spp., etc. 



Voucher specimen: OKLAHOMA. Mc Curtain Co.: 11.2 miles north 

 of Junction of Red River and OK Hwy 37, May 1999, Singhurst 10252 

 (BAYLU). 



ACKNOWLEDGEMENTS 



We wish to thank Oklahoma State Parks for permitting access to 

 Beaver Bend State Park. We are also grateful to John Pruski of the 

 Missouri Botanical Garden and Eric Keith of Raven Environmental 

 Sendees, Huntsville, Texas, for review of the manuscript. 



LITERATURE CITED 



Correll, D. S. and M. C. Johnston. 1970. Manual of the vascular plants 

 of Texas. Texas Research Foundation, Renner. 



Milstead, W. L. 1964. A revision of the North American species of 

 Prenanthes. Unpub. dissertation, Purdue University. 



Singhurst, J. R., R. J. O'Kennon, and W. C. Holmes. 2004. The genus 

 Prenanthes (Asteraceae: Lactuceae) in Texas. Sida 21: 181-191. 



Taylor R. J. and C. E. Taylor 1994. An annotated list of the ferns, fern 

 allies, gymnosperms and flowering plants of Oklahoma. Southeastern 

 Oklahoma State University, Durant. 



USDA, NRCS. 2004. The PLANTS database (MACROBUTTON 

 HtmlResAnchor http://plants.usda.gov/plants) . National Plant Data 

 Center, Baton Rouge, LA 70874-4490 USA. 



