CONTENTS. 
Page. 
Thompsonella, a new genus of Crassulaceae from Mexico. By N. L. Britton 
and J. N. Rose... 2.2222. --22.---2 2222 eee eee eee eee eee 391 
Rediscovery of /cheveria carnicolor. By J. N. Rose ...........------------- 393 
New species of Crassulaceae from Guatemala. By J. N. Rose......22-..220.. 395 
Rediscovery of Cereus nudiflorus. By J. N. Rose........2222...2222--2-2--- 397 
A species of Pereskia from Guatemala. By J. N. Rose..........2.2..2..--.- 399 
New species of Opuntia from Arizona. By J. N. Rose..........22-.-...---- 401 
Echinocereus baileyi, a new cactus from Oklahoma. By J. N. Rose...-.....-- 403 
Nopalea lutea, a new cactus from Guatemala. By J. N. Rose.........2-..--- 405 
Conzattia, a new genus of Caesalpiniaceae. By J. N. Rose.....2...22..-2---- 407 
Two new species of Acacia of the series Filicinae. By J. N. Rose..........-- 409 
A new spleenwort from China. By William R. Maxon..............------- 411 
ILLUSTRATIONS. 
Facing page. 
PuatE XLIV. Thompsonella minutifiora (Rose) Britton & Rose............-- 392 
XLV. Thompsonelia platyphylla Rose. ......2.-..----.-2-.2-22------ 392 
XLVI. Lcheveria carnicolor Baker ..........2...-.2.-2--2----------- 393 
XLVIL. Echereria guatemalensis Rose .........-2.2-2 2222-22222 eee 395 
XLVIIL. Heheveria maxonit Rose ........----------------------- =e 395 
XLIX. Cereus nudiflorus Engelm .........-.--2.2-.-...------------- 398 
L. Cereus nudiflorus Engelm.........-.--------.---------------- 398 
LI. Fruit of Cereus nudiflorus Engelm......-..-.-------.--------- 398 
LU. Pereskia autumnalis (Eichlam) Rose ......-....-.-.-.-------- 399 
LUI. Pereskia autumnalis (Eichlam) Rose ....-.------------------- 399 
LIV. Fruiting branches of Pereskia autumnalis (Eichlam) Rose....-- 399 
LV. A joint of Opuntia blakeana Rose ...........-...---..-------- 402 
LVI. Echinocereus baileyi Rose.........----.----- 222-222-0222 ee -- 40: 
LVII. Flower of Echinocereus baileyi Rose ......---.---------------- 403 
LVIIL. Nopalea lutea Rose .......-...-- wee e ee cence eee cent eee ee eee 405 
LIX. Conzattia arborea Rose .........20.22222----- 2-2-2222 eee eee 408 
LX. Asplentum microtum Maxon ...:--.---.---------- we eee eee eee 411 
