VI CONTENTS, 
Theaceae ......---. 222 eee eee eee wee eee we ween ee eee 
The Mexican species of Taonabo .........-------2-----------+--------+- 
Begoniaceae 2... ..22 22022 ee ee eee ee ee ee eee 
A peculiar Begonia from southern Mexico.......-....-.---------------- 
Melastomataceae ......22... 22-22-20 2  e eeeeeeeee 
Restoration of Sechizocentron ..........2...--02---- 222 eee ee ee eee ee eee 
A synopsis of the species of Heterocentron......-....-------.---------- 
New species of two genera ........-..--------------------+---------2-e- 
Onagracea@ ........--..------ 2-222 e eee eee eee eee 
Introductory note ............2.002 200202002 eee eee eee ee eee 
New Hartmannias.......--...-----2 2.2220 eee eee ee eee eee ee eee 
New names in Lavaunia .......2-2-.-2.-2-------------- 2-222 - eee eee 
Raimannia, a new genus......-..2-------- 2. eee ee eee ee 
Apiaceae ....----.----.---- 2-2-2222 e eee eee ee ee eee eee 
Introductory note ...........2-..-.------ 22-222 eee ee eee ee eee eee eee 
New and recent species of Eryngium .........-.--.-------------------- 
Five new species of Prionosciadium............----------------------- : 
New species of several genera ......2....2220202020000222 02 --eeeeeeeene 
Cucurbitaceae. 2.2.2... 0.222 eee eee eee ee ce ee eee ee eee ee eee eee eee 
Two new species .. 2.2... 022 ee eee eee eee eens 
A synopsis of the Mexican species of Ribes (Continued) ..................-. 
