XVI. Descriptions of the new Genera and Species of the Class 
Composite honing the Floras of Peru, Mexico, and Chile. 
By Mr. David Don, Libr. L.S. 
Read January 20, and March 17, 1829. 
Tue extensive herbaria formed in Peru, Quito, and Chile, by 
Ruiz, Pavon, and Tafalla, and the Mexican collections of Sessé 
and Mociño, having by fortunate circumstances come into the 
possession of Aylmer Bourke Lambert, Esq., whose unwearied 
zeal in the advancement of botanical science is already well 
known, I have thought that a description of the Composite, which 
form an important part of these collections, might not prove 
unacceptable to the Linnean Society. Perhaps no pepe have 
made greater sacrifices for science than the Spani 
Her expeditions and voyages of discovery were fitted out on a 
most munificent and extensive scale; but unfortunately, the 
results of them have in but few instances been given to the 
scientific world. Don Hipolito Ruiz and Don José Pavon, 
accompanied by two draftsmen, were charged with the botanical 
mission to Peru in 1777, which lasted eleven years; and their 
labours were afterwards continued by Don Ju dan noite a 
Ow investigations were also ex iie. io the pro- 
vince of Quito, and. e. fertile “district of oe paquil. Don 
Martin Sess, Don Josef Mociño, and Don Vincente Cer- 
vantes, were charged with a similar mission to Mexicojá in the 
