CACTUS GENERA 



59 



CACTUS GENERA (OPUNTIA), continued 



bigelovi 



brasiliensis 



compressa . Common Pricklypear 



emoryi 



engelmanni 



ficus-indica 



fragilis 



imbricata (arborescens) 



Walkingstick Cactus 

 leptocaulis 



leucotricha . . . Aaronsbeard C. 

 mesacantha 

 microdasys 



■monacantha O. vulgaris 



phaeacantha 



polyacantha 



robusta 



subulata (Pereskia subulala) 



tomentosa 



tuna 



vulgaris {monacantha) 



PACHYCEREUS 

 chrysomallus (Cephalocereus chry- 



somallus) 

 marginatus (Cereus 7narginatus) 



Organpipe Cactus 

 pectenaboriginum (C. pecten-abori- 



ginum) . . Hairbrush Cactus 

 pringlei (C. pringlei) 



PEDIOCACTUS 



simpsoni {Echinocactus simpsoni) 



Snowball Cactus 

 PELECYPHORA 

 aselliformis .... Hatchet C. 

 pectinata 



PENIOCEREUS 



greggi (Cereus greggi) Deerhorn C. 



PERESKIA .... Pereskia 



aculeata Bladeapple 



grandifolia (bleo) Bush Pereskia 



nicoyana 



subulata . . . Opuntia subulata 



PHYLLOCACTUS 



EPIPHYLLUM 

 biformis . . Disocactus biformis 



PILOCEREUS 



CEPHALOCEREUS 



CACTUS GENERA, continued 



RATHBUNIA 

 alamosensis (Cereus alamosensis) 



REBUTIA 

 minuscula (Echinocactus vvinus- 



culus) 



RHIPSALIS 

 cassutha (R. cassytha Cy) 



Mistletoe Cactus 



paradoxa Chain C. 



salicomioides 



Hatiora salicomioides 



SCHLUMBERGERA 

 gaertneri (Epiphyllum gaertneri) 

 Easter Cactus 

 russelliana (E. russelliana) 



SELENICEREUS 

 boeckmanni (Cereus irradians) 

 donkelaari (C. donkelaari) 

 grandiflorus (C. grandiflorus) 



QUEEN-OF-THE-NIGHT 



hamatus (C. hamatus; C. rostralus) 

 macdonaldiae (C. niacdonaldioe) 

 pteranthus (C. nycticallus) 

 spinulosus (C. spinidosus) 



STROMBOCACTUS 

 turbiniformis (Echinocactus tur- 



biniformis Cy) 



THELOCACTUS 



bicolor [Echinocactus bicolor Cy) 

 heterochromus (E. heterochromus) 

 hexaedrophorus (Echinocactus hex- 



aedrophorus Cy) 

 leucacanthus (E. leucacanthus Cy) 

 lophothele (E. lophothele; E. lo- 



pothele Cy) 



TRICHOCEREUS 

 candicans (Cereus candicans Cy) 

 lamprochlorus (Cereus lamprochlo- 



rus Cy) 

 macrogonus (C. macrogonus Cy) 

 spachianus (C. spachianus Cy) 

 thelegonus (C. thelegonus) 



WILCOXIA 

 poselgeri (Cereus tuberosus) 



ZYGOCACTUS . Crab Cactus 



truncatus (Epiphyllum truncatum) 



Christmas Cactus 



Small CAPiTALS=approved common names. Alibreviations: (Ag) (Ar) (Cy) (f) see page 1. 



