328 Field Museum of Natural History Botany, Vol. II 



amply distinct from both. The angulate stem, the large thick almost 

 leathery leaves with a dense permanent tomentum on the under surface, 

 combined with the large heads and many bracted involucre, give the 

 plant a most striking appearance quite distinct from anything known 

 to the writer. The genus is dedicated to the keen and indefatigable col- 

 lector for the New York Botanical Garden Mr. J. A. Shafer. 



