CONTENTS, 
Page. 
Introductory notes ........22.222-22 222-2220 eee eee eee eee eee 281 
Poaceae ......2222---2-2-2-2 222-2020 0 0-0 ee eee eee 287 
Some grasses from Popocatepet] ..............---.-.--.---------------- 287 
Cyperaceae 2.22.2... 0.020022 ee ee eee ee eee 290 
Notes on Carex madrensis and the Carex pinetorum of Liebmann.... 2... -- 290 
Betulaceae ....-. 22.2.2. 0 2-2-2 ee eee eee eee eee 291 
Notes on Ostrya, with two new species. ...-......-.-------------------- 291 
Brassicaceae ...-.. 2222-2. 22-202 ee eee eee eee 293 
A new genus, Ornithocarpa...........---------.--------.-. 22 eee 293 
Three species of old genera.......--......--0 -.---- 2222-2 eee eee eee 294 
Crassulaceae ......22..-.--22-20--0----02-0---- 20-22-22 eee eee eee 294 
Two new species of Echeverla............-....---.-------------------- 294 
Grossulariaceae .-.-....---------2---222--22 22-2 eee eee eee 295 
A synopsis of the Mexican species of Ribes...............-.-.---------- 295 
Mimosaceae........-.----------------- 2-2-2 e eee eee 300 
A new species and a new hame.....-..-...--------------------------- - 3800 
Caesalpiniaceae -.......-.-.------------------ +--+ 2-2 eee eee eee eee eee eee . 301 
Three new species of Cercidium ..... .....-.--------------------------- 301 
New name for a Cassia.......2...2...-22------ 2-22-0222 ee eee eee eee ... 301 
Viciaceae .......---..-22-------------- 2-222 eeee eeeeeeeeeeeeeeeee 302 
The pediceled species of Parosela in Mexico.........------------------- 302 
A fascicle of new lupines.........-..------------.-----+---------------- 306 
Four new species of Indigofera ................------------------------ 310 
Three new species of Phaseolus..................----.-----.----------- 311 
New species of several genera........222..22---.-2--------------------- 312 
Erythroxylaceae .......2.22.2.22..------2-- 2-222 eee ee eee ees 313 
Descriptions of four species of Erythroxylon.........2.2---.--.--------- 313 
Meliaceae..........-2.2-- wee ee ee eee eee eee 3l4 
A new Spanish cedar from central Mexico..................------------ 314 
Polygalaceae ......2.. 2.002222 2 eee ee ee eee eee eee ee 316 
A new Polygala ..........22.0...0..-2 00002-2222 0-2 eee eee eee 315 
Vitaceae ... 2.2.2.2 20.022 ne eee eee ees 315 
A new grape from eastern Mexico .................-2----------8------- 315 
Tiliaceae ....-..-----222- 22-222 ee eee eee 315 
Notes on Heliocarpus, with new species. ..-....-..----+----------------- 315 
Two new basswoods ......-...-----.------------+------------2-2 eee eee 317 
Malvaceae .......--- 22-222. eee ee eee eee 318 
Three new Abutilons ..............--------------------------- 22 - eee 318 
Two new Kosteletzkyas and a new name............------------------- 319 
Two species of Robinsonella ................--.----------------------- 319 
Bombaceae .....2... 222-2000 ee ne eee eee eee 320 
Two new species of Ceiba and a new name........00.-------.-+---+---- 320 
Sterculiaceae.......--- 2.022.022 ee eee ee eee eee 321 
Two new species of Ayenia ........-...--------------+------------- eee 321 
Anew Melochia..........-02- 22 ee eee eee ee eee ee eee eee eee eee 321 
