INDEX OF GENERA AND SPECIES. 
[Synonyms in italics. Pages of principal! entries in heavy-face type.] 
Page. 
Acacia cuspidata____-_.---------- 409 
filicina _--------- oe 409 
filicioides____-.-______--------- 409 
lemmoni__.. ________-------. 409 
suffrutescens————-~------~----- 409 
texana _-~- ee 409 
villosa __-__~__ ee 409 
Asplenium microtum___—~- Wee 411. 
monanthes__~___-- ~~~ + 411 
platyneuron ____---~---------- 411 
trichomanes—_—_—~~~--~-----~--- 411 
Cercidium ~~. ~~~ ee 407 
Cereus lepidotus__--__---_-------- B97 
nudiflorus_—.--------------- 397, 3898 
Conzattia_-_~~ 5 eee 407 
arborea____..-/ 5 5 5 ee 408 
Echeveria australis___-_----------_ 396 
earnicolor ~~ ~~ ---~~-----~--+--~- 393 
guatemalensis_____---_------- 395 
lurida______----------------- 393 
Kechinocereus baileyi 
Pereskia autumnalis 
O 
Echeveria maxonii-___._.---------- 
minutiflora —..------------- 
caespitosus ~.--~~-~---------- 
Nopalea guatemalensis. ~~~ ~~ 
Opuntia arizonica _-__----+----~--- 
blakeuma ~~ ~~ ---_---~------~-~- 
discata. ~~~ ~~~ 
engelmanni ~_-----~----~--~~- 
lindheimeri _------------~ —_ 
toumeyi _-------------------- 
phaeacantha ~~--------------- 
nicovyana —~~_~---~~~~~~------- 
Pereskiopsis autumnalis_— ~~~ -- a 
‘Thompsonella___---_----_----~--- 
minutiflora ~-.----____-------~- 
platyphylla _-----~-- 
Villadia guatemalensis __._-___~- 
VII 
