CACTUS GENERi^ 



55 



CACTUS GENERA (CEREUS), continued 

 geometrizans 



Myrtillocactus geometrizans 

 giganteus . . Camegiea gigantea 



gracilis Harrisia gracilis 



grandiflorus 



Selenicereus grandiflorus 

 greggi .... Peniocereus greggi 

 gummosus 



Machaerocereus gummosus 

 haynaius . Selenicereus hamatus 

 hankeanus Cy . . Cereus validus 

 hildmannianus 

 irradians Selenicereus boeckmanni 



jamacaru Mandacaru 



lamprochlorus Cy 



Trichocereus lamprochlorus 

 lemairei . . . Hylocereus lemairei 

 macdonaldiae 



Selenicereus macdonaldiae 

 macrogonus Cy 



Trichocereus macrogonus 

 mammillatus 



Echinocereus mammillatus 

 marginatus 



Pachycereus marginatus 

 raartianus Cy 



Aporocactus martianus 

 martini Cy . . . Harrisia martini 

 nickelsi Cephalocereus polylophus 

 nycticallus Selenicereus pteranthus 

 obtusangulus 



Epiphyllanthus obtusangulus 

 ocamponis . Hylocereus ocamponis 

 olfersi 



Cephalocereus euphorbioides 

 'pecien-ahoriginum 



Pachycereus pectenaboriginum 

 'pentagonu^ 



Acanthocereus pentagonus 

 peruvianus 



pringlei . . Pachycereus pringlei 

 repandus 



The plant in cultivation under this name 

 is Harrisia gracilis. The true Cereus 

 repandus of botanists is not in the trade. 



rostratus . Selenicereus hamatus 

 serpentinus 



Nyctocereus serpentinus 

 setaceus . . Mediocactus coccineus 



CACTUS GENERA (CEREUS), continued 



spachianus Cy 



Trichocereus spachianus 

 speciosus . Heliocereus speciosus 

 spinulosus Selenicereus spinulosus 

 stellatus . . Trichocereus stellatus 

 stenopterus Hylocereus stenopterus 

 thelegonus Trichocereus thelegonus 

 thurberi . Lemaireocereus thurberi 

 tortuosus . . . Harrisia tortuosa 

 triangularis Hylocereus triangularis 

 tuberosus . . Wilcoxia poselgeri 

 validus (forbesi; C. ha7ikeanus Cy) 

 weberi . . Lemaireocereus weberi 



CLEISTOCACTUS 

 baumanni {Cereus baumanni) 



DISOCACTUS 



biformis {Phyllocactus biformis) 



ECHINOCACTUS 

 albatus 

 anfractuosus 



beguini . . . NeoUoydia beguini 

 bicolor Cy . . Thelocactus bicolor 

 capricornis Cy 



Astrophytum capricornis 

 coptonogonus 



cornigerus Cy Ferocactus latispinus 

 crispatus 



cylindraceus Cy . . F. acanthodes 

 denudatus 



Gymnocalycium denudatum 

 electr acanthus Cy 



Ferocactus melocactiformis 

 emoryi Cy . . Ferocactus covillei 

 gibbosus Gymnocalycium gibbosum 

 grusoni .... Golden Cactus 

 helophonis 

 heterochromus 



Thelocactus heterochromus 

 hexaedrophorus Cy 



T. hexaedrophorus 

 horizonthalonius 



NiGGERHEAD CaCTUS 



humilis 

 ingens 

 intertextus Cy 



Echinomastus intertextus 

 johnsoni Cy . Ferocactus johnsoni 

 krausei 



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



