CONTENTS. 
Page 
Introduction...-....-.------ eee eee eee eee ete eee eee t eee eeee 1 
Basis and methods of the work.......-------------------2e22 2c ee etree 1 
American herbaria examined.........---------+-+++ +22 eee cece eee eee 1 
European herbaria examined.......-.-----+------+++++eer errr eeeeeee 2 
Type specimens........----2---- 2025 eee ee eee eee cece etree estes ress 4 
SynonyMy....2....262 020 eee eee eee eee ee erent tee e ees ese ress 5 
Spelling of names.......----------2 2-02 eee eee terre reece teens 6 
Species, subspecies, and forms..--.....-----------++eeeerereeereeeee 7 
Geographical distribution..........222-.+-+-+ 2-22-22 e eee eee reece 8 
Citation of specimens........------ 2-2-2. eee cere eee eet etn et ees 8 
Text figures of spikelets ........--------+-22-00 +022 e rere terre reece 10 
Terminology...-.-.----2--2-220eee cece eee cere e recess eseeteteeees 10 
History and limitation of the genus......-.--------++-+++eee rete eerste 11 
Pre-Linnzan use of the name.......---------- +--+ eee eee eee eee 11 
The type of Panicum.........-----+----2220 22sec eee e eter reese 13 
History of Panicum after 1753......-----.-.-+ +++ +22 eee reese eer ceee 15 
Genera here excluded......------------- 2-222 e 2 cece creer e eee reee 16 
Grouping of the species......--------+-+-+ +--+ 22-22 eee reer e re reretee 17 
Description of the genus and species.......- bee eee eee e eee e ee eeeee 18 
Doubtful species........----- 20-222 ee cece ee eee erent teense eee 329 
List of new subgenera and species and new names......-----------+-+- seeeeeee 332 
Index to numbered specimens.......-.-------+++---2 2-2-2 eee e etre etree 333 
Ds (saa 389 
