Seed Plants, Ferns, Fern Allies of the Austi?i Region 87 



Pinaropappus roseus Lens. 



Common in ravines and bluffs of the Edwards Plateau. 

 Texas and Mexico. 



Serine a oppositifolia Kuntze. (Apogon humilis Ell.) 

 Shoal Creek Valley. 

 Southeastern states. 



Sitilias grandiflora Greene. False Dandelion. 

 River flood plain. 

 Southern prairie states. 



Sitilas multicaulis Green. {Pyrrhopappus multicaulis DC.) False 

 Dandelion. Dandelion. 

 Very common in open ground. Campus. 

 Gulf states to Arizona and Mexico. 



Sonchus asper All. Sow Thistle. 



Roadsides and waste ground. One of our most common weeds. A 

 coarse plant with prickly-margined leaves and small yellow heads. 



Widespread in North America. 



Sonchus oleraceus L. Sow Thistle. 



Similar to the other and in similar locations; equally abundant. 

 Widespread in North America. Naturalized from Europe. 



Taraxacum Taraxacum Karst. Dandelion. (T. officinale Weber.) 

 Occasional in roadsides here. Coming in from the Northeastern 



States. 



A cosmopolitan weed. 



