1889.] NATURAL SCIENCES OF PHILADELPHIA. 387 



fron flowers. It is usually confined to rocks along the shores." 

 (Herrick.) 



24. Genipa clusiifolia, Gr. (Stvains.) 



Seven-year Apple. Fragrant, has colored flowers and a hard 

 green fruit as large as a walnut. 



Many members of this order possess valuable medicinal properties. 

 Many are tonic and astringent. Quinine is obtained from one, and 

 others have similar properties, especially Exostemma. The snow- 

 berry tree has a diuretic fruit. The root is used here as an anti- 

 syphilitic, and said to have attenuant properties, and to be cathartic 

 and emetic. 



Order LI. COMPOSITE. 



1. Vernonia Bahamensis, Gr. (Swains.) 

 Flea-bane. Indigenous. 



2. Ageratum conyzoides, L. 



Bastard Hemp- Agrimony. West Indies. 



3. Eupatorium aromatisans, D. C. 

 Thorough-wort, Hemp-Agrimony. West Indies. 



4. E. villosum, Sw. (Swains.) 



5. E. foeniculaceum, Willd. 

 West Indies. 



6. E. conyzoides, V. (Sivains.) 

 Indigenous and West Indies. 



7. E. ageratifolium, Dc. (Swains.) 

 Indigenous and in Cuba and Mexico. 



8. E. integrifolium, Berb. 



9. E. repandum, W. (Swains.) 



10. Erigeron tenuis, F. & G. 

 Flea-bane. 



11. Baccharis angustifolia, Michx. 

 Dog-bush. Indigenous and in Florida. 



12. B. dioica, V. (Swains ) 



Turk's Island. (Hjalwars.) Indigenous and in West Indies. 



13. Pluchea odorata, Cass. (Swains.) 



River-side Tobacco. West Indies and America. 



14. P. purpurascens, Dc-. (Swains.) 



