31 



Salix 



Babylonica. Linn. Weeping- Willow. C. 



eriocephala. Michaux. Rose- Willow. 



falcata. Pursh. 



grisea. W i 1 1 d e n o w. 



lucida. Will d enow. 



Muhlenbergiana. Willdenow. 



Myrico'ides. Muhlenberg. 



nigra. Willdenow. 



obovata. Pursh. 



vitellina. Linn. Yellow- Willow. C. 



Salsola 



Caroliniana. W a 1 1 e r. 

 Kali. Linn. 



Sambucus 



Canadensis. L i n n. Black-Elder. 

 pubens. Michaux. Red- Elder. 

 Samolus 



Valerandi. Linn. 



Sanguinaria 



Canadensis. Linn. Blood-root. 



Sanguisorba 



Canadensis. Linn. 



Sanicula 



Marilandica. Linn. Saniclc. 

 Saponaria 



officinalis. Linn. Soap-wort. C. 



Sarothra 



Hypericoides. Nuttal). Orange-grass. 

 Sarracenia 



purpurea. L i n n. Side-saddle-flower. 



Saururus 



cernuus. Linn. Lizard? s-tail. 

 Saxifraga 



Pennsylvania. Linn. Water-Saxifrage. 

 Virginiensis. Michaux. Rock-Saxifrage. 



Schollera 



graminifolia. Willdenow. 



Scirpus 



acicularis. Linn, 

 acutus. Muhlenberg. 

 Americanus. Persoon, 

 brunneus. Muhlenberg. 



