INDEX OF GENERA AND SPECIES. 
[Synonyms are printed in italics.} 
Page. | Cacrus—Continued. 
ANHALONIUM. ... 0.2000 e scence eee eeeeen ees 128 palmeri ......... 200. c eee ee ee cee n eee 
CLONGALUI ©... al cee eee nee w cece ee eee 130 phellospermius ........00..000 0022 cence eee 
engelmanni .........--..-...--22- 2s eee 129 pondii... 0.02... ..e ccc cce cece ccc e cence 
ASBUTALUM 210 cece cece eee 129 potsii 02... cece cece cece cc eee ee cece 
furfuraceum .............----2---22 eee 130 pringlei ... 00.0200 .0...0 00.2 ec eee eee ee ee 
kotchubeyi......--...2-2.-..2.022220 05+ 129 prismaticus .....20222.. 0 ceccceececeeee 
WOWINIG oie sca ih caeeciised 4 eee ees 131 PUSIUS oo cdcc ced a whee Jae Gok eanlenk ed 
prismaticum ...........-..00602 ee eee eee 129 Tadians........2-.2. ce cece ccccceccccce 
pulvilligerum .......-...2..-..200..-+5 130 pectenoides ....................-..- 
Sulcatum ..22 22.5 eee eee ene eee 129 TadiOSUS. .... cece cece ce cccccccccceccuce 
WU AMET ooo ee ee ee eee eee 2 131 alversoni.............--.-2.-.2--00-- 
CACTUS ofS ee tae Se eel clo eed: 95 arizonicus............0...0e0eeeeees 
acanthophlegmus ...............----+5- 96 chloranthus............2..2--.-005- 
alternatus. ............. 20.2 e eee eee eee 95 WesOrti ccc aeee ie hs ees 
barbatus ¢ --c2ccen bss wee eee see eee ee ses 102 neo-mexicanus ............2-eeee vee 
bispinus .........00..0---- 22 eee eee eee 101 TECUIVALUB .......-0.2. 002 -eeeee eee eee 
pbocasanus.......---....-.20220- 0-2 a. 104 i rhodanthus ......-........0.20- eee eee 
brandeget 2: : 225252204 ceeccn sca sdsodiee 96 sulphureospinus ........-..-----++- 
brunmenus .... 22.0222 ee eee ee eee 117 robustispinus .-.................-..006- 
COLCA TALUS sccivin cabled ios ced salen oe Peewee 116 TOSCADUIS 6c... 55 sos ooscdes cde ances ese: 
Capillaria: occ 06 sese bcos seach eee eee 107 salm-dyckianus ............-...-----+-- 
COM PaACtUs cc. cecececiose ssh cucesees 113 acheerii .......- woe olen an Hasee sca eacee 
conoideus ..... 22... 2... c ce eet eee eee H7 achelhasii cs sce ects cess eee eevee ss 
Cormiferus. ......0..0. 2. ee eee eee eee .- 24 acolymoides.......-..-----------2--0- + 
dasyacanthus ............--.--2 0 eee eee 117 gulcatiis <0 2.0235 is06 Soke et eci es 
densispinus ..............0. 2-002 cee n eee 96 setispinus..........-.....-.---- ee eee 
Ochinua coo. es eee occu 116 spheericus.......--------+ +2222 eee eee 
eschanzieri ............2...-0000-e ee eee 104 spherotrichus .......---------+-++2--++ 
P10) 1) | pn 109 eteMatus ccd sc as dee eck Soke ee 
goodrichii...................0-- 2200 ne 102 tOX ANUS 22k och cckeswse ce seen ewes es 
Grahams... 6565. 63c 00s eeeelebess ee ones 103 tetrancistrus..........--.----- 2.2.2 eee 
gummiferus.....-....20.-- 22 eee ewe nee 98 tuberculosus...-.--------2---e eee econ 
Nhalei 3s asec cs bene ee sede cede ae tes 106 WNCINAtUS ..----- 2 eee ee eee eee ee ee eee 
hey eri ces heed ged tones 97 ViViparus ...-.- 2-2-2 eeeee cece eee eee 
hemisphericus.......--...--.------ 97 wrightii......-------. 20. cess eee eee eee 
laniferus 0... wee ee eee bees 107 zephyranthoides ..-..---.-+-------+++++ 
lasiacantha..........----.0--0ee eee eres 99 | Echinoeactus— 
denndatus ..............-2-- 2.5006. 100 | willkamsid .....- cece eee eee ee cee teens 
longimamma..............--.--e00-02 05 110 | LOPHOPHORA....---.----- 22-0 esseee rere eee 
macromeris ............-..002---- ee eee 122 williamaii....-----------------eeee eee 
maculatus........-.....--.2eeee eee eeees 117 leowinli......... 2... ee eee eee eee eee 
Mamillaris ...........0. 0... cece eee ees 95 | Mamillaria ..........2.-02-- eee cree eee ees 
mamillaria ..... 2.0.0.2 000-0-0cee concoees 110 acanthophlegma . .....---+++e++eereer eee 
Meiacanthusé ............--.--cecnceees 98 AAUNCA. .. ee eee Cee eet e renee erenee 
micromeris..,..........00ceccceeeceeeee 100 Applandta..-.--.-- ee ee ere en ee eeenecres 
RIOR TI 2 osc ciscdenssedelecieess 101 APIZONIED. ..0 20-22 c eee ceee tener eset e rt: 
Missourienais ...............-.00-eeeeee 110 | barbata ....-.---eeeeer eres ee seer eerc ce: 
robuatior. ..........0....020---- 0-0 111 Dihamala...... cence cece nr eser etter cess 
SiMiliB fsccceeeciecceteccs sale ctho ciare 111 DOCASANG ....-- nese er ecrensre set eeretee 
